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Remove round 1 Dilithium
This does not implement the detached signature API, and will change significantly for NIST's 2nd round anyway.
This commit is contained in:
Joost Rijneveld
parent
87a3c6ab39
commit
e7602479f1
@ -1,18 +0,0 @@
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name: Dilithium-III
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type: signature
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claimed-nist-level: 3
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length-public-key: 1472
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length-secret-key: 3504
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length-signature: 2701
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testvectors-sha256: 0d9d7a41b24ab8b250c352fdb50318193f2f66c6c582d7721b785b1a4618b493
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principal-submitter: Vadim Lyubashevsky
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auxiliary-submitters:
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- Léo Ducas
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- Eike Kiltz
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- Tancrède Lepoint
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- Peter Schwabe
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- Gregor Seiler
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- Damien Stehlé
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implementations:
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- name: clean
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version: https://github.com/pq-crystals/dilithium/commit/ffa89bdbc12a8ee178ccec4890aeea5449ef937a
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@ -1 +0,0 @@
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Public Domain
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@ -1,19 +0,0 @@
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# This Makefile can be used with GNU Make or BSD Make
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LIB=libdilithium-iii_clean.a
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HEADERS=api.h ntt.h packing.h params.h poly.h polyvec.h reduce.h rounding.h sign.h
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OBJECTS=ntt.o packing.o poly.o polyvec.o reduce.o rounding.o sign.o
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CFLAGS=-Wall -Wextra -Wpedantic -Werror -std=c99 -I../../../common $(EXTRAFLAGS)
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all: $(LIB)
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%.o: %.c $(HEADERS)
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$(CC) $(CFLAGS) -c -o $@ $<
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$(LIB): $(OBJECTS)
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$(AR) -r $@ $(OBJECTS)
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clean:
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$(RM) $(OBJECTS)
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$(RM) $(LIB)
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@ -1,19 +0,0 @@
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# This Makefile can be used with Microsoft Visual Studio's nmake using the command:
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# nmake /f Makefile.Microsoft_nmake
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LIBRARY=libdilithium-iii_clean.lib
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OBJECTS=ntt.obj packing.obj poly.obj polyvec.obj reduce.obj rounding.obj sign.obj
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CFLAGS=/nologo /I ..\..\..\common /W1 /WX # FIXME: ideally would use /W4 instead of /W1, but too many failures in Dilithium right now
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all: $(LIBRARY)
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# Make sure objects are recompiled if headers change.
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$(OBJECTS): *.h
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$(LIBRARY): $(OBJECTS)
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LIB.EXE /NOLOGO /WX /OUT:$@ $**
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clean:
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-DEL $(OBJECTS)
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-DEL $(LIBRARY)
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@ -1,30 +0,0 @@
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#ifndef PQCLEAN_DILITHIUMIII_CLEAN_API_H
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#define PQCLEAN_DILITHIUMIII_CLEAN_API_H
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#include <stddef.h>
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#include <stdint.h>
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#define MODE 2
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#define PQCLEAN_DILITHIUMIII_CLEAN_CRYPTO_PUBLICKEYBYTES 1472U
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#define PQCLEAN_DILITHIUMIII_CLEAN_CRYPTO_SECRETKEYBYTES 3504U
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#define PQCLEAN_DILITHIUMIII_CLEAN_CRYPTO_BYTES 2701U
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#define PQCLEAN_DILITHIUMIII_CLEAN_CRYPTO_ALGNAME "Dilithium-III"
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int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign_keypair(uint8_t *pk,
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uint8_t *sk);
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int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign(uint8_t *sm,
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size_t *smlen,
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const uint8_t *msg,
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size_t len,
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const uint8_t *sk);
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int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign_open(uint8_t *m,
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size_t *mlen,
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const uint8_t *sm,
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size_t smlen,
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const uint8_t *pk);
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#endif
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@ -1,139 +0,0 @@
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#include "ntt.h"
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#include "params.h"
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#include "poly.h"
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#include "reduce.h"
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/* Roots of unity in order needed by forward ntt */
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static const uint32_t PQCLEAN_DILITHIUMIII_CLEAN_zetas[N] = {
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0, 25847, 5771523, 7861508, 237124, 7602457, 7504169, 466468,
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1826347, 2353451, 8021166, 6288512, 3119733, 5495562, 3111497, 2680103,
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2725464, 1024112, 7300517, 3585928, 7830929, 7260833, 2619752, 6271868,
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6262231, 4520680, 6980856, 5102745, 1757237, 8360995, 4010497, 280005,
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2706023, 95776, 3077325, 3530437, 6718724, 4788269, 5842901, 3915439,
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4519302, 5336701, 3574422, 5512770, 3539968, 8079950, 2348700, 7841118,
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6681150, 6736599, 3505694, 4558682, 3507263, 6239768, 6779997, 3699596,
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811944, 531354, 954230, 3881043, 3900724, 5823537, 2071892, 5582638,
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4450022, 6851714, 4702672, 5339162, 6927966, 3475950, 2176455, 6795196,
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7122806, 1939314, 4296819, 7380215, 5190273, 5223087, 4747489, 126922,
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3412210, 7396998, 2147896, 2715295, 5412772, 4686924, 7969390, 5903370,
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7709315, 7151892, 8357436, 7072248, 7998430, 1349076, 1852771, 6949987,
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5037034, 264944, 508951, 3097992, 44288, 7280319, 904516, 3958618,
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4656075, 8371839, 1653064, 5130689, 2389356, 8169440, 759969, 7063561,
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189548, 4827145, 3159746, 6529015, 5971092, 8202977, 1315589, 1341330,
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1285669, 6795489, 7567685, 6940675, 5361315, 4499357, 4751448, 3839961,
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2091667, 3407706, 2316500, 3817976, 5037939, 2244091, 5933984, 4817955,
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266997, 2434439, 7144689, 3513181, 4860065, 4621053, 7183191, 5187039,
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900702, 1859098, 909542, 819034, 495491, 6767243, 8337157, 7857917,
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7725090, 5257975, 2031748, 3207046, 4823422, 7855319, 7611795, 4784579,
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342297, 286988, 5942594, 4108315, 3437287, 5038140, 1735879, 203044,
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2842341, 2691481, 5790267, 1265009, 4055324, 1247620, 2486353, 1595974,
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4613401, 1250494, 2635921, 4832145, 5386378, 1869119, 1903435, 7329447,
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7047359, 1237275, 5062207, 6950192, 7929317, 1312455, 3306115, 6417775,
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7100756, 1917081, 5834105, 7005614, 1500165, 777191, 2235880, 3406031,
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7838005, 5548557, 6709241, 6533464, 5796124, 4656147, 594136, 4603424,
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6366809, 2432395, 2454455, 8215696, 1957272, 3369112, 185531, 7173032,
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5196991, 162844, 1616392, 3014001, 810149, 1652634, 4686184, 6581310,
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5341501, 3523897, 3866901, 269760, 2213111, 7404533, 1717735, 472078,
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7953734, 1723600, 6577327, 1910376, 6712985, 7276084, 8119771, 4546524,
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5441381, 6144432, 7959518, 6094090, 183443, 7403526, 1612842, 4834730,
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7826001, 3919660, 8332111, 7018208, 3937738, 1400424, 7534263, 1976782
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};
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/* Roots of unity in order needed by inverse ntt */
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static const uint32_t PQCLEAN_DILITHIUMIII_CLEAN_zetas_inv[N] = {
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6403635, 846154, 6979993, 4442679, 1362209, 48306, 4460757, 554416,
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3545687, 6767575, 976891, 8196974, 2286327, 420899, 2235985, 2939036,
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3833893, 260646, 1104333, 1667432, 6470041, 1803090, 6656817, 426683,
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7908339, 6662682, 975884, 6167306, 8110657, 4513516, 4856520, 3038916,
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1799107, 3694233, 6727783, 7570268, 5366416, 6764025, 8217573, 3183426,
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1207385, 8194886, 5011305, 6423145, 164721, 5925962, 5948022, 2013608,
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3776993, 7786281, 3724270, 2584293, 1846953, 1671176, 2831860, 542412,
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4974386, 6144537, 7603226, 6880252, 1374803, 2546312, 6463336, 1279661,
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1962642, 5074302, 7067962, 451100, 1430225, 3318210, 7143142, 1333058,
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1050970, 6476982, 6511298, 2994039, 3548272, 5744496, 7129923, 3767016,
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6784443, 5894064, 7132797, 4325093, 7115408, 2590150, 5688936, 5538076,
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8177373, 6644538, 3342277, 4943130, 4272102, 2437823, 8093429, 8038120,
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3595838, 768622, 525098, 3556995, 5173371, 6348669, 3122442, 655327,
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522500, 43260, 1613174, 7884926, 7561383, 7470875, 6521319, 7479715,
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3193378, 1197226, 3759364, 3520352, 4867236, 1235728, 5945978, 8113420,
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3562462, 2446433, 6136326, 3342478, 4562441, 6063917, 4972711, 6288750,
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4540456, 3628969, 3881060, 3019102, 1439742, 812732, 1584928, 7094748,
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7039087, 7064828, 177440, 2409325, 1851402, 5220671, 3553272, 8190869,
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1316856, 7620448, 210977, 5991061, 3249728, 6727353, 8578, 3724342,
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4421799, 7475901, 1100098, 8336129, 5282425, 7871466, 8115473, 3343383,
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1430430, 6527646, 7031341, 381987, 1308169, 22981, 1228525, 671102,
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2477047, 411027, 3693493, 2967645, 5665122, 6232521, 983419, 4968207,
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8253495, 3632928, 3157330, 3190144, 1000202, 4083598, 6441103, 1257611,
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1585221, 6203962, 4904467, 1452451, 3041255, 3677745, 1528703, 3930395,
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2797779, 6308525, 2556880, 4479693, 4499374, 7426187, 7849063, 7568473,
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4680821, 1600420, 2140649, 4873154, 3821735, 4874723, 1643818, 1699267,
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539299, 6031717, 300467, 4840449, 2867647, 4805995, 3043716, 3861115,
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4464978, 2537516, 3592148, 1661693, 4849980, 5303092, 8284641, 5674394,
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8100412, 4369920, 19422, 6623180, 3277672, 1399561, 3859737, 2118186,
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2108549, 5760665, 1119584, 549488, 4794489, 1079900, 7356305, 5654953,
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5700314, 5268920, 2884855, 5260684, 2091905, 359251, 6026966, 6554070,
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7913949, 876248, 777960, 8143293, 518909, 2608894, 8354570
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};
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/*************************************************
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* Name: ntt
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*
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* Description: Forward NTT, in-place. No modular reduction is performed after
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* additions or subtractions. Hence output coefficients can be up
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* to 16*Q larger than the coefficients of the input polynomial.
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* Output vector is in bitreversed order.
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*
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* Arguments: - uint32_t p[N]: input/output coefficient array
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**************************************************/
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void PQCLEAN_DILITHIUMIII_CLEAN_ntt(uint32_t p[N]) {
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unsigned int len, start, j, k;
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uint32_t zeta, t;
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k = 1;
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for (len = 128; len > 0; len >>= 1) {
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for (start = 0; start < N; start = j + len) {
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zeta = PQCLEAN_DILITHIUMIII_CLEAN_zetas[k++];
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for (j = start; j < start + len; ++j) {
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t = PQCLEAN_DILITHIUMIII_CLEAN_montgomery_reduce(
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(uint64_t)zeta * p[j + len]);
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p[j + len] = p[j] + 2 * Q - t;
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p[j] = p[j] + t;
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}
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}
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}
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}
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/*************************************************
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* Name: invntt_frominvmont
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*
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* Description: Inverse NTT and multiplication by Montgomery factor 2^32.
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* In-place. No modular reductions after additions or
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* subtractions. Input coefficient need to be smaller than 2*Q.
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* Output coefficient are smaller than 2*Q.
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*
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* Arguments: - uint32_t p[N]: input/output coefficient array
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**************************************************/
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void PQCLEAN_DILITHIUMIII_CLEAN_invntt_frominvmont(uint32_t p[N]) {
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unsigned int start, len, j, k;
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uint32_t t, zeta;
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const uint32_t f =
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(((uint64_t)MONT * MONT % Q) * (Q - 1) % Q) * ((Q - 1) >> 8) % Q;
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k = 0;
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for (len = 1; len < N; len <<= 1) {
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for (start = 0; start < N; start = j + len) {
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zeta = PQCLEAN_DILITHIUMIII_CLEAN_zetas_inv[k++];
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for (j = start; j < start + len; ++j) {
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t = p[j];
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p[j] = t + p[j + len];
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p[j + len] = t + 256 * Q - p[j + len];
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p[j + len] = PQCLEAN_DILITHIUMIII_CLEAN_montgomery_reduce(
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(uint64_t)zeta * p[j + len]);
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}
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}
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}
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for (j = 0; j < N; ++j) {
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p[j] = PQCLEAN_DILITHIUMIII_CLEAN_montgomery_reduce((uint64_t)f * p[j]);
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}
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}
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@ -1,10 +0,0 @@
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#ifndef NTT_H
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#define NTT_H
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#include "params.h"
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#include <stdint.h>
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void PQCLEAN_DILITHIUMIII_CLEAN_ntt(uint32_t p[N]);
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void PQCLEAN_DILITHIUMIII_CLEAN_invntt_frominvmont(uint32_t p[N]);
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#endif
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@ -1,301 +0,0 @@
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#include "packing.h"
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#include "params.h"
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#include "poly.h"
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#include "polyvec.h"
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/*************************************************
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* Name: pack_pk
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*
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* Description: Bit-pack public key pk = (rho, t1).
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*
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* Arguments: - unsigned char pk[]: output byte array
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* - const unsigned char rho[]: byte array containing rho
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* - const polyveck *t1: pointer to vector t1
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**************************************************/
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void PQCLEAN_DILITHIUMIII_CLEAN_pack_pk(unsigned char pk[CRYPTO_PUBLICKEYBYTES],
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const unsigned char rho[SEEDBYTES],
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const polyveck *t1) {
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unsigned int i;
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for (i = 0; i < SEEDBYTES; ++i) {
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pk[i] = rho[i];
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}
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pk += SEEDBYTES;
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for (i = 0; i < K; ++i) {
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PQCLEAN_DILITHIUMIII_CLEAN_polyt1_pack(pk + i * POLT1_SIZE_PACKED,
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t1->vec + i);
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}
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}
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/*************************************************
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* Name: unpack_pk
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*
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* Description: Unpack public key pk = (rho, t1).
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*
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* Arguments: - const unsigned char rho[]: output byte array for rho
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* - const polyveck *t1: pointer to output vector t1
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* - unsigned char pk[]: byte array containing bit-packed pk
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**************************************************/
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void PQCLEAN_DILITHIUMIII_CLEAN_unpack_pk(
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unsigned char rho[SEEDBYTES], polyveck *t1,
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const unsigned char pk[CRYPTO_PUBLICKEYBYTES]) {
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unsigned int i;
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for (i = 0; i < SEEDBYTES; ++i) {
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rho[i] = pk[i];
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}
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pk += SEEDBYTES;
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for (i = 0; i < K; ++i) {
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PQCLEAN_DILITHIUMIII_CLEAN_polyt1_unpack(t1->vec + i,
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pk + i * POLT1_SIZE_PACKED);
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}
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}
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/*************************************************
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* Name: pack_sk
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*
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* Description: Bit-pack secret key sk = (rho, key, tr, s1, s2, t0).
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*
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* Arguments: - unsigned char sk[]: output byte array
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* - const unsigned char rho[]: byte array containing rho
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* - const unsigned char key[]: byte array containing key
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* - const unsigned char tr[]: byte array containing tr
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* - const polyvecl *s1: pointer to vector s1
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* - const polyveck *s2: pointer to vector s2
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* - const polyveck *t0: pointer to vector t0
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**************************************************/
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void PQCLEAN_DILITHIUMIII_CLEAN_pack_sk(unsigned char sk[CRYPTO_SECRETKEYBYTES],
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const unsigned char rho[SEEDBYTES],
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const unsigned char key[SEEDBYTES],
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const unsigned char tr[CRHBYTES],
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const polyvecl *s1, const polyveck *s2,
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const polyveck *t0) {
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unsigned int i;
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for (i = 0; i < SEEDBYTES; ++i) {
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sk[i] = rho[i];
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}
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sk += SEEDBYTES;
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for (i = 0; i < SEEDBYTES; ++i) {
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sk[i] = key[i];
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}
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sk += SEEDBYTES;
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for (i = 0; i < CRHBYTES; ++i) {
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sk[i] = tr[i];
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}
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sk += CRHBYTES;
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for (i = 0; i < L; ++i) {
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PQCLEAN_DILITHIUMIII_CLEAN_polyeta_pack(sk + i * POLETA_SIZE_PACKED,
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s1->vec + i);
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}
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sk += L * POLETA_SIZE_PACKED;
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for (i = 0; i < K; ++i) {
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PQCLEAN_DILITHIUMIII_CLEAN_polyeta_pack(sk + i * POLETA_SIZE_PACKED,
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s2->vec + i);
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}
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sk += K * POLETA_SIZE_PACKED;
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for (i = 0; i < K; ++i) {
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PQCLEAN_DILITHIUMIII_CLEAN_polyt0_pack(sk + i * POLT0_SIZE_PACKED,
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t0->vec + i);
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}
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}
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/*************************************************
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* Name: unpack_sk
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*
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* Description: Unpack secret key sk = (rho, key, tr, s1, s2, t0).
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*
|
||||
* Arguments: - const unsigned char rho[]: output byte array for rho
|
||||
* - const unsigned char key[]: output byte array for key
|
||||
* - const unsigned char tr[]: output byte array for tr
|
||||
* - const polyvecl *s1: pointer to output vector s1
|
||||
* - const polyveck *s2: pointer to output vector s2
|
||||
* - const polyveck *r0: pointer to output vector t0
|
||||
* - unsigned char sk[]: byte array containing bit-packed sk
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_unpack_sk(
|
||||
unsigned char rho[SEEDBYTES], unsigned char key[SEEDBYTES],
|
||||
unsigned char tr[CRHBYTES], polyvecl *s1, polyveck *s2, polyveck *t0,
|
||||
const unsigned char sk[CRYPTO_SECRETKEYBYTES]) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < SEEDBYTES; ++i) {
|
||||
rho[i] = sk[i];
|
||||
}
|
||||
sk += SEEDBYTES;
|
||||
|
||||
for (i = 0; i < SEEDBYTES; ++i) {
|
||||
key[i] = sk[i];
|
||||
}
|
||||
sk += SEEDBYTES;
|
||||
|
||||
for (i = 0; i < CRHBYTES; ++i) {
|
||||
tr[i] = sk[i];
|
||||
}
|
||||
sk += CRHBYTES;
|
||||
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyeta_unpack(s1->vec + i,
|
||||
sk + i * POLETA_SIZE_PACKED);
|
||||
}
|
||||
sk += L * POLETA_SIZE_PACKED;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyeta_unpack(s2->vec + i,
|
||||
sk + i * POLETA_SIZE_PACKED);
|
||||
}
|
||||
sk += K * POLETA_SIZE_PACKED;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyt0_unpack(t0->vec + i,
|
||||
sk + i * POLT0_SIZE_PACKED);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: pack_sig
|
||||
*
|
||||
* Description: Bit-pack signature sig = (z, h, c).
|
||||
*
|
||||
* Arguments: - unsigned char sig[]: output byte array
|
||||
* - const polyvecl *z: pointer to vector z
|
||||
* - const polyveck *h: pointer to hint vector h
|
||||
* - const poly *c: pointer to challenge polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_pack_sig(unsigned char sig[CRYPTO_BYTES],
|
||||
const polyvecl *z, const polyveck *h,
|
||||
const poly *c) {
|
||||
unsigned int i, j, k;
|
||||
uint64_t signs, mask;
|
||||
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyz_pack(sig + i * POLZ_SIZE_PACKED, z->vec + i);
|
||||
}
|
||||
sig += L * POLZ_SIZE_PACKED;
|
||||
|
||||
/* Encode h */
|
||||
k = 0;
|
||||
for (i = 0; i < K; ++i) {
|
||||
for (j = 0; j < N; ++j) {
|
||||
if (h->vec[i].coeffs[j] != 0) {
|
||||
sig[k++] = j;
|
||||
}
|
||||
}
|
||||
|
||||
sig[OMEGA + i] = k;
|
||||
}
|
||||
while (k < OMEGA) {
|
||||
sig[k++] = 0;
|
||||
}
|
||||
sig += OMEGA + K;
|
||||
|
||||
/* Encode c */
|
||||
signs = 0;
|
||||
mask = 1;
|
||||
for (i = 0; i < N / 8; ++i) {
|
||||
sig[i] = 0;
|
||||
for (j = 0; j < 8; ++j) {
|
||||
if (c->coeffs[8 * i + j] != 0) {
|
||||
sig[i] |= (1U << j);
|
||||
if (c->coeffs[8 * i + j] == (Q - 1)) {
|
||||
signs |= mask;
|
||||
}
|
||||
mask <<= 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
sig += N / 8;
|
||||
for (i = 0; i < 8; ++i) {
|
||||
sig[i] = signs >> 8 * i;
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: unpack_sig
|
||||
*
|
||||
* Description: Unpack signature sig = (z, h, c).
|
||||
*
|
||||
* Arguments: - polyvecl *z: pointer to output vector z
|
||||
* - polyveck *h: pointer to output hint vector h
|
||||
* - poly *c: pointer to output challenge polynomial
|
||||
* - const unsigned char sig[]: byte array containing
|
||||
* bit-packed signature
|
||||
*
|
||||
* Returns 1 in case of malformed signature; otherwise 0.
|
||||
**************************************************/
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_unpack_sig(polyvecl *z, polyveck *h, poly *c,
|
||||
const unsigned char sig[CRYPTO_BYTES]) {
|
||||
unsigned int i, j, k;
|
||||
uint64_t signs, mask;
|
||||
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyz_unpack(z->vec + i,
|
||||
sig + i * POLZ_SIZE_PACKED);
|
||||
}
|
||||
sig += L * POLZ_SIZE_PACKED;
|
||||
|
||||
/* Decode h */
|
||||
k = 0;
|
||||
for (i = 0; i < K; ++i) {
|
||||
for (j = 0; j < N; ++j) {
|
||||
h->vec[i].coeffs[j] = 0;
|
||||
}
|
||||
|
||||
if (sig[OMEGA + i] < k || sig[OMEGA + i] > OMEGA) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
for (j = k; j < sig[OMEGA + i]; ++j) {
|
||||
/* Coefficients are ordered for strong unforgeability */
|
||||
if (j > k && sig[j] <= sig[j - 1]) {
|
||||
return 1;
|
||||
}
|
||||
h->vec[i].coeffs[sig[j]] = 1;
|
||||
}
|
||||
|
||||
k = sig[OMEGA + i];
|
||||
}
|
||||
|
||||
/* Extra indices are zero for strong unforgeability */
|
||||
for (j = k; j < OMEGA; ++j) {
|
||||
if (sig[j]) {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
sig += OMEGA + K;
|
||||
|
||||
/* Decode c */
|
||||
for (i = 0; i < N; ++i) {
|
||||
c->coeffs[i] = 0;
|
||||
}
|
||||
|
||||
signs = 0;
|
||||
for (i = 0; i < 8; ++i) {
|
||||
signs |= (uint64_t)sig[N / 8 + i] << 8 * i;
|
||||
}
|
||||
|
||||
/* Extra sign bits are zero for strong unforgeability */
|
||||
if (signs >> 60) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
mask = 1;
|
||||
for (i = 0; i < N / 8; ++i) {
|
||||
for (j = 0; j < 8; ++j) {
|
||||
if ((sig[i] >> j) & 0x01) {
|
||||
c->coeffs[8 * i + j] = (signs & mask) ? Q - 1 : 1;
|
||||
mask <<= 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1,30 +0,0 @@
|
||||
#ifndef PACKING_H
|
||||
#define PACKING_H
|
||||
|
||||
#include "params.h"
|
||||
#include "polyvec.h"
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_pack_pk(unsigned char pk[CRYPTO_PUBLICKEYBYTES],
|
||||
const unsigned char rho[SEEDBYTES],
|
||||
const polyveck *t1);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_pack_sk(unsigned char sk[CRYPTO_SECRETKEYBYTES],
|
||||
const unsigned char rho[SEEDBYTES],
|
||||
const unsigned char key[SEEDBYTES],
|
||||
const unsigned char tr[CRHBYTES],
|
||||
const polyvecl *s1, const polyveck *s2,
|
||||
const polyveck *t0);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_pack_sig(unsigned char sig[CRYPTO_BYTES],
|
||||
const polyvecl *z, const polyveck *h,
|
||||
const poly *c);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_unpack_pk(
|
||||
unsigned char rho[SEEDBYTES], polyveck *t1,
|
||||
const unsigned char pk[CRYPTO_PUBLICKEYBYTES]);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_unpack_sk(
|
||||
unsigned char rho[SEEDBYTES], unsigned char key[SEEDBYTES],
|
||||
unsigned char tr[CRHBYTES], polyvecl *s1, polyveck *s2, polyveck *t0,
|
||||
const unsigned char sk[CRYPTO_SECRETKEYBYTES]);
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_unpack_sig(polyvecl *z, polyveck *h, poly *c,
|
||||
const unsigned char sig[CRYPTO_BYTES]);
|
||||
|
||||
#endif
|
||||
@ -1,68 +0,0 @@
|
||||
#ifndef PARAMS_H
|
||||
#define PARAMS_H
|
||||
|
||||
#ifndef MODE
|
||||
#define MODE 2
|
||||
#endif
|
||||
|
||||
#define SEEDBYTES 32U
|
||||
#define CRHBYTES 48U
|
||||
#define N 256U
|
||||
#define Q 8380417U
|
||||
#define QBITS 23U
|
||||
#define ROOT_OF_UNITY 1753U
|
||||
#define D 14U
|
||||
#define GAMMA1 ((Q - 1U) / 16U)
|
||||
#define GAMMA2 (GAMMA1 / 2U)
|
||||
#define ALPHA (2U * GAMMA2)
|
||||
|
||||
#if MODE == 0
|
||||
#define K 3U
|
||||
#define L 2U
|
||||
#define ETA 7U
|
||||
#define SETABITS 4U
|
||||
#define BETA 375U
|
||||
#define OMEGA 64U
|
||||
|
||||
#elif MODE == 1
|
||||
#define K 4U
|
||||
#define L 3U
|
||||
#define ETA 6U
|
||||
#define SETABITS 4U
|
||||
#define BETA 325U
|
||||
#define OMEGA 80U
|
||||
|
||||
#elif MODE == 2
|
||||
#define K 5U
|
||||
#define L 4U
|
||||
#define ETA 5U
|
||||
#define SETABITS 4U
|
||||
#define BETA 275U
|
||||
#define OMEGA 96U
|
||||
|
||||
#elif MODE == 3
|
||||
#define K 6U
|
||||
#define L 5U
|
||||
#define ETA 3U
|
||||
#define SETABITS 3U
|
||||
#define BETA 175U
|
||||
#define OMEGA 120U
|
||||
|
||||
#endif
|
||||
|
||||
#define POL_SIZE_PACKED ((N * QBITS) / 8)
|
||||
#define POLT1_SIZE_PACKED ((N * (QBITS - D)) / 8)
|
||||
#define POLT0_SIZE_PACKED ((N * D) / 8)
|
||||
#define POLETA_SIZE_PACKED ((N * SETABITS) / 8)
|
||||
#define POLZ_SIZE_PACKED ((N * (QBITS - 3)) / 8)
|
||||
#define POLW1_SIZE_PACKED ((N * 4) / 8)
|
||||
#define POLVECK_SIZE_PACKED (K * POL_SIZE_PACKED)
|
||||
#define POLVECL_SIZE_PACKED (L * POL_SIZE_PACKED)
|
||||
|
||||
#define CRYPTO_PUBLICKEYBYTES (SEEDBYTES + K * POLT1_SIZE_PACKED)
|
||||
#define CRYPTO_SECRETKEYBYTES \
|
||||
(2 * SEEDBYTES + (L + K) * POLETA_SIZE_PACKED + CRHBYTES + \
|
||||
K * POLT0_SIZE_PACKED)
|
||||
#define CRYPTO_BYTES (L * POLZ_SIZE_PACKED + (OMEGA + K) + (N / 8 + 8))
|
||||
|
||||
#endif
|
||||
@ -1,777 +0,0 @@
|
||||
#include "poly.h"
|
||||
#include "fips202.h"
|
||||
#include "ntt.h"
|
||||
#include "params.h"
|
||||
#include "reduce.h"
|
||||
#include "rounding.h"
|
||||
#include <stdint.h>
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_reduce
|
||||
*
|
||||
* Description: Reduce all coefficients of input polynomial to representative
|
||||
* in [0,2*Q[.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to input/output polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_reduce(poly *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a->coeffs[i] = PQCLEAN_DILITHIUMIII_CLEAN_reduce32(a->coeffs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_csubq
|
||||
*
|
||||
* Description: For all coefficients of input polynomial subtract Q if
|
||||
* coefficient is bigger than Q.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to input/output polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_csubq(poly *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a->coeffs[i] = PQCLEAN_DILITHIUMIII_CLEAN_csubq(a->coeffs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_freeze
|
||||
*
|
||||
* Description: Reduce all coefficients of the polynomial to standard
|
||||
* representatives.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to input/output polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_freeze(poly *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a->coeffs[i] = PQCLEAN_DILITHIUMIII_CLEAN_freeze(a->coeffs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_add
|
||||
*
|
||||
* Description: Add polynomials. No modular reduction is performed.
|
||||
*
|
||||
* Arguments: - poly *c: pointer to output polynomial
|
||||
* - const poly *a: pointer to first summand
|
||||
* - const poly *b: pointer to second summand
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_add(poly *c, const poly *a, const poly *b) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
c->coeffs[i] = a->coeffs[i] + b->coeffs[i];
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_sub
|
||||
*
|
||||
* Description: Subtract polynomials. Assumes coefficients of second input
|
||||
* polynomial to be less than 2*Q. No modular reduction is
|
||||
* performed.
|
||||
*
|
||||
* Arguments: - poly *c: pointer to output polynomial
|
||||
* - const poly *a: pointer to first input polynomial
|
||||
* - const poly *b: pointer to second input polynomial to be
|
||||
* subtraced from first input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_sub(poly *c, const poly *a, const poly *b) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
c->coeffs[i] = a->coeffs[i] + 2 * Q - b->coeffs[i];
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_neg
|
||||
*
|
||||
* Description: Negate polynomial. Assumes input coefficients to be standard
|
||||
* representatives.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to input/output polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_neg(poly *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a->coeffs[i] = Q - a->coeffs[i];
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_shiftl
|
||||
*
|
||||
* Description: Multiply polynomial by 2^k without modular reduction. Assumes
|
||||
* input coefficients to be less than 2^{32-k}.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to input/output polynomial
|
||||
* - unsigned int k: exponent
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_shiftl(poly *a, unsigned int k) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a->coeffs[i] <<= k;
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_ntt
|
||||
*
|
||||
* Description: Forward NTT. Output coefficients can be up to 16*Q larger than
|
||||
* input coefficients.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to input/output polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_ntt(poly *a) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_ntt(a->coeffs);
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_invntt_montgomery
|
||||
*
|
||||
* Description: Inverse NTT and multiplication with 2^{32}. Input coefficients
|
||||
* need to be less than 2*Q. Output coefficients are less than 2*Q.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to input/output polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(poly *a) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_invntt_frominvmont(a->coeffs);
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_pointwise_invmontgomery
|
||||
*
|
||||
* Description: Pointwise multiplication of polynomials in NTT domain
|
||||
* representation and multiplication of resulting polynomial
|
||||
* with 2^{-32}. Output coefficients are less than 2*Q if input
|
||||
* coefficient are less than 22*Q.
|
||||
*
|
||||
* Arguments: - poly *c: pointer to output polynomial
|
||||
* - const poly *a: pointer to first input polynomial
|
||||
* - const poly *b: pointer to second input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(poly *c, const poly *a,
|
||||
const poly *b) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
c->coeffs[i] = PQCLEAN_DILITHIUMIII_CLEAN_montgomery_reduce(
|
||||
(uint64_t)a->coeffs[i] * b->coeffs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_power2round
|
||||
*
|
||||
* Description: For all coefficients c of the input polynomial,
|
||||
* compute c0, c1 such that c mod Q = c1*2^D + c0
|
||||
* with -2^{D-1} < c0 <= 2^{D-1}. Assumes coefficients to be
|
||||
* standard representatives.
|
||||
*
|
||||
* Arguments: - poly *a1: pointer to output polynomial with coefficients c1
|
||||
* - poly *a0: pointer to output polynomial with coefficients Q +
|
||||
*a0
|
||||
* - const poly *v: pointer to input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_power2round(poly *a1, poly *a0, const poly *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a1->coeffs[i] =
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_power2round(a->coeffs[i], a0->coeffs + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_decompose
|
||||
*
|
||||
* Description: For all coefficients c of the input polynomial,
|
||||
* compute high and low bits c0, c1 such c mod Q = c1*ALPHA + c0
|
||||
* with -ALPHA/2 < c0 <= ALPHA/2 except c1 = (Q-1)/ALPHA where we
|
||||
* set c1 = 0 and -ALPHA/2 <= c0 = c mod Q - Q < 0.
|
||||
* Assumes coefficients to be standard representatives.
|
||||
*
|
||||
* Arguments: - poly *a1: pointer to output polynomial with coefficients c1
|
||||
* - poly *a0: pointer to output polynomial with coefficients Q +
|
||||
*a0
|
||||
* - const poly *c: pointer to input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_decompose(poly *a1, poly *a0, const poly *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a1->coeffs[i] =
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_decompose(a->coeffs[i], a0->coeffs + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_make_hint
|
||||
*
|
||||
* Description: Compute hint polynomial. The coefficients of which indicate
|
||||
* whether the high bits of the corresponding coefficients
|
||||
* of the first input polynomial and of the sum of the input
|
||||
* polynomials differ.
|
||||
*
|
||||
* Arguments: - poly *h: pointer to output hint polynomial
|
||||
* - const poly *a: pointer to first input polynomial
|
||||
* - const poly *b: pointer to second input polynomial
|
||||
*
|
||||
* Returns number of 1 bits.
|
||||
**************************************************/
|
||||
unsigned int PQCLEAN_DILITHIUMIII_CLEAN_poly_make_hint(poly *h, const poly *a,
|
||||
const poly *b) {
|
||||
unsigned int i, s = 0;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
h->coeffs[i] =
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_make_hint(a->coeffs[i], b->coeffs[i]);
|
||||
s += h->coeffs[i];
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_use_hint
|
||||
*
|
||||
* Description: Use hint polynomial to correct the high bits of a polynomial.
|
||||
*
|
||||
* Arguments: - poly *a: pointer to output polynomial with corrected high bits
|
||||
* - const poly *b: pointer to input polynomial
|
||||
* - const poly *h: pointer to input hint polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_use_hint(poly *a, const poly *b, const poly *h) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
a->coeffs[i] =
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_use_hint(b->coeffs[i], h->coeffs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_chknorm
|
||||
*
|
||||
* Description: Check infinity norm of polynomial against given bound.
|
||||
* Assumes input coefficients to be standard representatives.
|
||||
*
|
||||
* Arguments: - const poly *a: pointer to polynomial
|
||||
* - uint32_t B: norm bound
|
||||
*
|
||||
* Returns 0 if norm is strictly smaller than B and 1 otherwise.
|
||||
**************************************************/
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_poly_chknorm(const poly *a, uint32_t B) {
|
||||
unsigned int i;
|
||||
int32_t t;
|
||||
|
||||
/* It is ok to leak which coefficient violates the bound since
|
||||
the probability for each coefficient is independent of secret
|
||||
data but we must not leak the sign of the centralized representative. */
|
||||
for (i = 0; i < N; ++i) {
|
||||
/* Absolute value of centralized representative */
|
||||
t = (Q - 1) / 2 - a->coeffs[i];
|
||||
t ^= (t >> 31);
|
||||
t = (Q - 1) / 2 - t;
|
||||
|
||||
if ((uint32_t)t >= B) {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_uniform
|
||||
*
|
||||
* Description: Sample uniformly random polynomial using stream of random bytes.
|
||||
* Assumes that enough random bytes are given (e.g.
|
||||
* 5*SHAKE128_RATE bytes).
|
||||
*
|
||||
* Arguments: - poly *a: pointer to output polynomial
|
||||
* - const unsigned char *buf: array of random bytes
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform(poly *a, const unsigned char *buf) {
|
||||
unsigned int ctr, pos;
|
||||
uint32_t t;
|
||||
|
||||
ctr = pos = 0;
|
||||
while (ctr < N) {
|
||||
t = buf[pos++];
|
||||
t |= (uint32_t)buf[pos++] << 8;
|
||||
t |= (uint32_t)buf[pos++] << 16;
|
||||
t &= 0x7FFFFF;
|
||||
|
||||
if (t < Q) {
|
||||
a->coeffs[ctr++] = t;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: rej_eta
|
||||
*
|
||||
* Description: Sample uniformly random coefficients in [-ETA, ETA] by
|
||||
* performing rejection sampling using array of random bytes.
|
||||
*
|
||||
* Arguments: - uint32_t *a: pointer to output array (allocated)
|
||||
* - unsigned int len: number of coefficients to be sampled
|
||||
* - const unsigned char *buf: array of random bytes
|
||||
* - unsigned int buflen: length of array of random bytes
|
||||
*
|
||||
* Returns number of sampled coefficients. Can be smaller than len if not enough
|
||||
* random bytes were given.
|
||||
**************************************************/
|
||||
static unsigned int rej_eta(uint32_t *a, unsigned int len,
|
||||
const unsigned char *buf, unsigned int buflen) {
|
||||
#if ETA > 7
|
||||
#error "rej_eta() assumes ETA <= 7"
|
||||
#endif
|
||||
unsigned int ctr, pos;
|
||||
unsigned char t0, t1;
|
||||
|
||||
ctr = pos = 0;
|
||||
while (ctr < len && pos < buflen) {
|
||||
#if ETA <= 3
|
||||
t0 = buf[pos] & 0x07;
|
||||
t1 = buf[pos++] >> 5;
|
||||
#else
|
||||
t0 = buf[pos] & 0x0F;
|
||||
t1 = buf[pos++] >> 4;
|
||||
#endif
|
||||
|
||||
if (t0 <= 2 * ETA) {
|
||||
a[ctr++] = Q + ETA - t0;
|
||||
}
|
||||
if (t1 <= 2 * ETA && ctr < len) {
|
||||
a[ctr++] = Q + ETA - t1;
|
||||
}
|
||||
}
|
||||
return ctr;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_uniform_eta
|
||||
*
|
||||
* Description: Sample polynomial with uniformly random coefficients
|
||||
* in [-ETA,ETA] by performing rejection sampling using the
|
||||
* output stream from SHAKE256(seed|nonce).
|
||||
*
|
||||
* Arguments: - poly *a: pointer to output polynomial
|
||||
* - const unsigned char seed[]: byte array with seed of length
|
||||
* SEEDBYTES
|
||||
* - unsigned char nonce: nonce byte
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform_eta(poly *a,
|
||||
const unsigned char seed[SEEDBYTES],
|
||||
unsigned char nonce) {
|
||||
unsigned int i, ctr;
|
||||
unsigned char inbuf[SEEDBYTES + 1];
|
||||
/* Probability that we need more than 2 blocks: < 2^{-84}
|
||||
Probability that we need more than 3 blocks: < 2^{-352} */
|
||||
unsigned char outbuf[2 * SHAKE256_RATE];
|
||||
uint64_t state[25];
|
||||
|
||||
for (i = 0; i < SEEDBYTES; ++i) {
|
||||
inbuf[i] = seed[i];
|
||||
}
|
||||
inbuf[SEEDBYTES] = nonce;
|
||||
|
||||
shake256_absorb(state, inbuf, SEEDBYTES + 1);
|
||||
shake256_squeezeblocks(outbuf, 2, state);
|
||||
|
||||
ctr = rej_eta(a->coeffs, N, outbuf, 2 * SHAKE256_RATE);
|
||||
if (ctr < N) {
|
||||
shake256_squeezeblocks(outbuf, 1, state);
|
||||
rej_eta(a->coeffs + ctr, N - ctr, outbuf, SHAKE256_RATE);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: rej_gamma1m1
|
||||
*
|
||||
* Description: Sample uniformly random coefficients
|
||||
* in [-(GAMMA1 - 1), GAMMA1 - 1] by performing rejection sampling
|
||||
* using array of random bytes.
|
||||
*
|
||||
* Arguments: - uint32_t *a: pointer to output array (allocated)
|
||||
* - unsigned int len: number of coefficients to be sampled
|
||||
* - const unsigned char *buf: array of random bytes
|
||||
* - unsigned int buflen: length of array of random bytes
|
||||
*
|
||||
* Returns number of sampled coefficients. Can be smaller than len if not enough
|
||||
* random bytes were given.
|
||||
**************************************************/
|
||||
static unsigned int rej_gamma1m1(uint32_t *a, unsigned int len,
|
||||
const unsigned char *buf,
|
||||
unsigned int buflen) {
|
||||
#if GAMMA1 > (1 << 19)
|
||||
#error "rej_gamma1m1() assumes GAMMA1 - 1 fits in 19 bits"
|
||||
#endif
|
||||
unsigned int ctr, pos;
|
||||
uint32_t t0, t1;
|
||||
|
||||
ctr = pos = 0;
|
||||
while (ctr < len && pos + 5 <= buflen) {
|
||||
t0 = buf[pos];
|
||||
t0 |= (uint32_t)buf[pos + 1] << 8;
|
||||
t0 |= (uint32_t)buf[pos + 2] << 16;
|
||||
t0 &= 0xFFFFF;
|
||||
|
||||
t1 = buf[pos + 2] >> 4;
|
||||
t1 |= (uint32_t)buf[pos + 3] << 4;
|
||||
t1 |= (uint32_t)buf[pos + 4] << 12;
|
||||
|
||||
pos += 5;
|
||||
|
||||
if (t0 <= 2 * GAMMA1 - 2) {
|
||||
a[ctr++] = Q + GAMMA1 - 1 - t0;
|
||||
}
|
||||
if (t1 <= 2 * GAMMA1 - 2 && ctr < len) {
|
||||
a[ctr++] = Q + GAMMA1 - 1 - t1;
|
||||
}
|
||||
}
|
||||
|
||||
return ctr;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: poly_uniform_gamma1m1
|
||||
*
|
||||
* Description: Sample polynomial with uniformly random coefficients
|
||||
* in [-(GAMMA1 - 1), GAMMA1 - 1] by performing rejection
|
||||
* sampling on output stream of SHAKE256(seed|nonce).
|
||||
*
|
||||
* Arguments: - poly *a: pointer to output polynomial
|
||||
* - const unsigned char seed[]: byte array with seed of length
|
||||
* SEEDBYTES + CRHBYTES
|
||||
* - uint16_t nonce: 16-bit nonce
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform_gamma1m1(
|
||||
poly *a, const unsigned char seed[SEEDBYTES + CRHBYTES], uint16_t nonce) {
|
||||
unsigned int i, ctr;
|
||||
unsigned char inbuf[SEEDBYTES + CRHBYTES + 2];
|
||||
/* Probability that we need more than 5 blocks: < 2^{-81}
|
||||
Probability that we need more than 6 blocks: < 2^{-467} */
|
||||
unsigned char outbuf[5 * SHAKE256_RATE];
|
||||
uint64_t state[25];
|
||||
|
||||
for (i = 0; i < SEEDBYTES + CRHBYTES; ++i) {
|
||||
inbuf[i] = seed[i];
|
||||
}
|
||||
inbuf[SEEDBYTES + CRHBYTES] = nonce & 0xFF;
|
||||
inbuf[SEEDBYTES + CRHBYTES + 1] = nonce >> 8;
|
||||
|
||||
shake256_absorb(state, inbuf, SEEDBYTES + CRHBYTES + 2);
|
||||
shake256_squeezeblocks(outbuf, 5, state);
|
||||
|
||||
ctr = rej_gamma1m1(a->coeffs, N, outbuf, 5 * SHAKE256_RATE);
|
||||
if (ctr < N) {
|
||||
/* There are no bytes left in outbuf
|
||||
since 5*SHAKE256_RATE is divisible by 5 */
|
||||
shake256_squeezeblocks(outbuf, 1, state);
|
||||
rej_gamma1m1(a->coeffs + ctr, N - ctr, outbuf, SHAKE256_RATE);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyeta_pack
|
||||
*
|
||||
* Description: Bit-pack polynomial with coefficients in [-ETA,ETA].
|
||||
* Input coefficients are assumed to lie in [Q-ETA,Q+ETA].
|
||||
*
|
||||
* Arguments: - unsigned char *r: pointer to output byte array with at least
|
||||
* POLETA_SIZE_PACKED bytes
|
||||
* - const poly *a: pointer to input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyeta_pack(unsigned char *r, const poly *a) {
|
||||
#if ETA > 7
|
||||
#error "polyeta_pack() assumes ETA <= 7"
|
||||
#endif
|
||||
unsigned int i;
|
||||
unsigned char t[8];
|
||||
|
||||
#if ETA <= 3
|
||||
for (i = 0; i < N / 8; ++i) {
|
||||
t[0] = Q + ETA - a->coeffs[8 * i + 0];
|
||||
t[1] = Q + ETA - a->coeffs[8 * i + 1];
|
||||
t[2] = Q + ETA - a->coeffs[8 * i + 2];
|
||||
t[3] = Q + ETA - a->coeffs[8 * i + 3];
|
||||
t[4] = Q + ETA - a->coeffs[8 * i + 4];
|
||||
t[5] = Q + ETA - a->coeffs[8 * i + 5];
|
||||
t[6] = Q + ETA - a->coeffs[8 * i + 6];
|
||||
t[7] = Q + ETA - a->coeffs[8 * i + 7];
|
||||
|
||||
r[3 * i + 0] = t[0];
|
||||
r[3 * i + 0] |= t[1] << 3;
|
||||
r[3 * i + 0] |= t[2] << 6;
|
||||
r[3 * i + 1] = t[2] >> 2;
|
||||
r[3 * i + 1] |= t[3] << 1;
|
||||
r[3 * i + 1] |= t[4] << 4;
|
||||
r[3 * i + 1] |= t[5] << 7;
|
||||
r[3 * i + 2] = t[5] >> 1;
|
||||
r[3 * i + 2] |= t[6] << 2;
|
||||
r[3 * i + 2] |= t[7] << 5;
|
||||
}
|
||||
#else
|
||||
for (i = 0; i < N / 2; ++i) {
|
||||
t[0] = Q + ETA - a->coeffs[2 * i + 0];
|
||||
t[1] = Q + ETA - a->coeffs[2 * i + 1];
|
||||
r[i] = t[0] | (t[1] << 4);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyeta_unpack
|
||||
*
|
||||
* Description: Unpack polynomial with coefficients in [-ETA,ETA].
|
||||
* Output coefficients lie in [Q-ETA,Q+ETA].
|
||||
*
|
||||
* Arguments: - poly *r: pointer to output polynomial
|
||||
* - const unsigned char *a: byte array with bit-packed polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyeta_unpack(poly *r, const unsigned char *a) {
|
||||
unsigned int i;
|
||||
|
||||
#if ETA <= 3
|
||||
for (i = 0; i < N / 8; ++i) {
|
||||
r->coeffs[8 * i + 0] = a[3 * i + 0] & 0x07;
|
||||
r->coeffs[8 * i + 1] = (a[3 * i + 0] >> 3) & 0x07;
|
||||
r->coeffs[8 * i + 2] =
|
||||
(a[3 * i + 0] >> 6) | ((a[3 * i + 1] & 0x01) << 2);
|
||||
r->coeffs[8 * i + 3] = (a[3 * i + 1] >> 1) & 0x07;
|
||||
r->coeffs[8 * i + 4] = (a[3 * i + 1] >> 4) & 0x07;
|
||||
r->coeffs[8 * i + 5] =
|
||||
(a[3 * i + 1] >> 7) | ((a[3 * i + 2] & 0x03) << 1);
|
||||
r->coeffs[8 * i + 6] = (a[3 * i + 2] >> 2) & 0x07;
|
||||
r->coeffs[8 * i + 7] = (a[3 * i + 2] >> 5);
|
||||
|
||||
r->coeffs[8 * i + 0] = Q + ETA - r->coeffs[8 * i + 0];
|
||||
r->coeffs[8 * i + 1] = Q + ETA - r->coeffs[8 * i + 1];
|
||||
r->coeffs[8 * i + 2] = Q + ETA - r->coeffs[8 * i + 2];
|
||||
r->coeffs[8 * i + 3] = Q + ETA - r->coeffs[8 * i + 3];
|
||||
r->coeffs[8 * i + 4] = Q + ETA - r->coeffs[8 * i + 4];
|
||||
r->coeffs[8 * i + 5] = Q + ETA - r->coeffs[8 * i + 5];
|
||||
r->coeffs[8 * i + 6] = Q + ETA - r->coeffs[8 * i + 6];
|
||||
r->coeffs[8 * i + 7] = Q + ETA - r->coeffs[8 * i + 7];
|
||||
}
|
||||
#else
|
||||
for (i = 0; i < N / 2; ++i) {
|
||||
r->coeffs[2 * i + 0] = a[i] & 0x0F;
|
||||
r->coeffs[2 * i + 1] = a[i] >> 4;
|
||||
r->coeffs[2 * i + 0] = Q + ETA - r->coeffs[2 * i + 0];
|
||||
r->coeffs[2 * i + 1] = Q + ETA - r->coeffs[2 * i + 1];
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyt1_pack
|
||||
*
|
||||
* Description: Bit-pack polynomial t1 with coefficients fitting in 9 bits.
|
||||
* Input coefficients are assumed to be standard representatives.
|
||||
*
|
||||
* Arguments: - unsigned char *r: pointer to output byte array with at least
|
||||
* POLT1_SIZE_PACKED bytes
|
||||
* - const poly *a: pointer to input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt1_pack(unsigned char *r, const poly *a) {
|
||||
#if D != 14
|
||||
#error "polyt1_pack() assumes D == 14"
|
||||
#endif
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N / 8; ++i) {
|
||||
r[9 * i + 0] = a->coeffs[8 * i + 0] & 0xFF;
|
||||
r[9 * i + 1] = (a->coeffs[8 * i + 0] >> 8) | ((a->coeffs[8 * i + 1] & 0x7F) << 1);
|
||||
r[9 * i + 2] = (a->coeffs[8 * i + 1] >> 7) | ((a->coeffs[8 * i + 2] & 0x3F) << 2);
|
||||
r[9 * i + 3] = (a->coeffs[8 * i + 2] >> 6) | ((a->coeffs[8 * i + 3] & 0x1F) << 3);
|
||||
r[9 * i + 4] = (a->coeffs[8 * i + 3] >> 5) | ((a->coeffs[8 * i + 4] & 0x0F) << 4);
|
||||
r[9 * i + 5] = (a->coeffs[8 * i + 4] >> 4) | ((a->coeffs[8 * i + 5] & 0x07) << 5);
|
||||
r[9 * i + 6] = (a->coeffs[8 * i + 5] >> 3) | ((a->coeffs[8 * i + 6] & 0x03) << 6);
|
||||
r[9 * i + 7] = (a->coeffs[8 * i + 6] >> 2) | ((a->coeffs[8 * i + 7] & 0x01) << 7);
|
||||
r[9 * i + 8] = a->coeffs[8 * i + 7] >> 1;
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyt1_unpack
|
||||
*
|
||||
* Description: Unpack polynomial t1 with 9-bit coefficients.
|
||||
* Output coefficients are standard representatives.
|
||||
*
|
||||
* Arguments: - poly *r: pointer to output polynomial
|
||||
* - const unsigned char *a: byte array with bit-packed polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt1_unpack(poly *r, const unsigned char *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N / 8; ++i) {
|
||||
r->coeffs[8 * i + 0] = a[9 * i + 0] | ((uint32_t)(a[9 * i + 1] & 0x01) << 8);
|
||||
r->coeffs[8 * i + 1] = (a[9 * i + 1] >> 1) | ((uint32_t)(a[9 * i + 2] & 0x03) << 7);
|
||||
r->coeffs[8 * i + 2] = (a[9 * i + 2] >> 2) | ((uint32_t)(a[9 * i + 3] & 0x07) << 6);
|
||||
r->coeffs[8 * i + 3] = (a[9 * i + 3] >> 3) | ((uint32_t)(a[9 * i + 4] & 0x0F) << 5);
|
||||
r->coeffs[8 * i + 4] = (a[9 * i + 4] >> 4) | ((uint32_t)(a[9 * i + 5] & 0x1F) << 4);
|
||||
r->coeffs[8 * i + 5] = (a[9 * i + 5] >> 5) | ((uint32_t)(a[9 * i + 6] & 0x3F) << 3);
|
||||
r->coeffs[8 * i + 6] = (a[9 * i + 6] >> 6) | ((uint32_t)(a[9 * i + 7] & 0x7F) << 2);
|
||||
r->coeffs[8 * i + 7] = (a[9 * i + 7] >> 7) | ((uint32_t)(a[9 * i + 8] & 0xFF) << 1);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyt0_pack
|
||||
*
|
||||
* Description: Bit-pack polynomial t0 with coefficients in ]-2^{D-1}, 2^{D-1}].
|
||||
* Input coefficients are assumed to lie in ]Q-2^{D-1}, Q+2^{D-1}].
|
||||
*
|
||||
* Arguments: - unsigned char *r: pointer to output byte array with at least
|
||||
* POLT0_SIZE_PACKED bytes
|
||||
* - const poly *a: pointer to input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt0_pack(unsigned char *r, const poly *a) {
|
||||
unsigned int i;
|
||||
uint32_t t[4];
|
||||
|
||||
for (i = 0; i < N / 4; ++i) {
|
||||
t[0] = Q + (1 << (D - 1)) - a->coeffs[4 * i + 0];
|
||||
t[1] = Q + (1 << (D - 1)) - a->coeffs[4 * i + 1];
|
||||
t[2] = Q + (1 << (D - 1)) - a->coeffs[4 * i + 2];
|
||||
t[3] = Q + (1 << (D - 1)) - a->coeffs[4 * i + 3];
|
||||
|
||||
r[7 * i + 0] = t[0];
|
||||
r[7 * i + 1] = t[0] >> 8;
|
||||
r[7 * i + 1] |= t[1] << 6;
|
||||
r[7 * i + 2] = t[1] >> 2;
|
||||
r[7 * i + 3] = t[1] >> 10;
|
||||
r[7 * i + 3] |= t[2] << 4;
|
||||
r[7 * i + 4] = t[2] >> 4;
|
||||
r[7 * i + 5] = t[2] >> 12;
|
||||
r[7 * i + 5] |= t[3] << 2;
|
||||
r[7 * i + 6] = t[3] >> 6;
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyt0_unpack
|
||||
*
|
||||
* Description: Unpack polynomial t0 with coefficients in ]-2^{D-1}, 2^{D-1}].
|
||||
* Output coefficients lie in ]Q-2^{D-1},Q+2^{D-1}].
|
||||
*
|
||||
* Arguments: - poly *r: pointer to output polynomial
|
||||
* - const unsigned char *a: byte array with bit-packed polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt0_unpack(poly *r, const unsigned char *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N / 4; ++i) {
|
||||
r->coeffs[4 * i + 0] = a[7 * i + 0];
|
||||
r->coeffs[4 * i + 0] |= (uint32_t)(a[7 * i + 1] & 0x3F) << 8;
|
||||
|
||||
r->coeffs[4 * i + 1] = a[7 * i + 1] >> 6;
|
||||
r->coeffs[4 * i + 1] |= (uint32_t)a[7 * i + 2] << 2;
|
||||
r->coeffs[4 * i + 1] |= (uint32_t)(a[7 * i + 3] & 0x0F) << 10;
|
||||
|
||||
r->coeffs[4 * i + 2] = a[7 * i + 3] >> 4;
|
||||
r->coeffs[4 * i + 2] |= (uint32_t)a[7 * i + 4] << 4;
|
||||
r->coeffs[4 * i + 2] |= (uint32_t)(a[7 * i + 5] & 0x03) << 12;
|
||||
|
||||
r->coeffs[4 * i + 3] = a[7 * i + 5] >> 2;
|
||||
r->coeffs[4 * i + 3] |= (uint32_t)a[7 * i + 6] << 6;
|
||||
|
||||
r->coeffs[4 * i + 0] = Q + (1 << (D - 1)) - r->coeffs[4 * i + 0];
|
||||
r->coeffs[4 * i + 1] = Q + (1 << (D - 1)) - r->coeffs[4 * i + 1];
|
||||
r->coeffs[4 * i + 2] = Q + (1 << (D - 1)) - r->coeffs[4 * i + 2];
|
||||
r->coeffs[4 * i + 3] = Q + (1 << (D - 1)) - r->coeffs[4 * i + 3];
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyz_pack
|
||||
*
|
||||
* Description: Bit-pack polynomial z with coefficients
|
||||
* in [-(GAMMA1 - 1), GAMMA1 - 1].
|
||||
* Input coefficients are assumed to be standard representatives.
|
||||
*
|
||||
* Arguments: - unsigned char *r: pointer to output byte array with at least
|
||||
* POLZ_SIZE_PACKED bytes
|
||||
* - const poly *a: pointer to input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyz_pack(unsigned char *r, const poly *a) {
|
||||
#if GAMMA1 > (1 << 19)
|
||||
#error "polyz_pack() assumes GAMMA1 <= 2^{19}"
|
||||
#endif
|
||||
unsigned int i;
|
||||
uint32_t t[2];
|
||||
|
||||
for (i = 0; i < N / 2; ++i) {
|
||||
/* Map to {0,...,2*GAMMA1 - 2} */
|
||||
t[0] = GAMMA1 - 1 - a->coeffs[2 * i + 0];
|
||||
t[0] += ((int32_t)t[0] >> 31) & Q;
|
||||
t[1] = GAMMA1 - 1 - a->coeffs[2 * i + 1];
|
||||
t[1] += ((int32_t)t[1] >> 31) & Q;
|
||||
|
||||
r[5 * i + 0] = t[0];
|
||||
r[5 * i + 1] = t[0] >> 8;
|
||||
r[5 * i + 2] = t[0] >> 16;
|
||||
r[5 * i + 2] |= t[1] << 4;
|
||||
r[5 * i + 3] = t[1] >> 4;
|
||||
r[5 * i + 4] = t[1] >> 12;
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyz_unpack
|
||||
*
|
||||
* Description: Unpack polynomial z with coefficients
|
||||
* in [-(GAMMA1 - 1), GAMMA1 - 1].
|
||||
* Output coefficients are standard representatives.
|
||||
*
|
||||
* Arguments: - poly *r: pointer to output polynomial
|
||||
* - const unsigned char *a: byte array with bit-packed polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyz_unpack(poly *r, const unsigned char *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N / 2; ++i) {
|
||||
r->coeffs[2 * i + 0] = a[5 * i + 0];
|
||||
r->coeffs[2 * i + 0] |= (uint32_t)a[5 * i + 1] << 8;
|
||||
r->coeffs[2 * i + 0] |= (uint32_t)(a[5 * i + 2] & 0x0F) << 16;
|
||||
|
||||
r->coeffs[2 * i + 1] = a[5 * i + 2] >> 4;
|
||||
r->coeffs[2 * i + 1] |= (uint32_t)a[5 * i + 3] << 4;
|
||||
r->coeffs[2 * i + 1] |= (uint32_t)a[5 * i + 4] << 12;
|
||||
|
||||
r->coeffs[2 * i + 0] = GAMMA1 - 1 - r->coeffs[2 * i + 0];
|
||||
r->coeffs[2 * i + 0] += ((int32_t)r->coeffs[2 * i + 0] >> 31) & Q;
|
||||
r->coeffs[2 * i + 1] = GAMMA1 - 1 - r->coeffs[2 * i + 1];
|
||||
r->coeffs[2 * i + 1] += ((int32_t)r->coeffs[2 * i + 1] >> 31) & Q;
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyw1_pack
|
||||
*
|
||||
* Description: Bit-pack polynomial w1 with coefficients in [0, 15].
|
||||
* Input coefficients are assumed to be standard representatives.
|
||||
*
|
||||
* Arguments: - unsigned char *r: pointer to output byte array with at least
|
||||
* POLW1_SIZE_PACKED bytes
|
||||
* - const poly *a: pointer to input polynomial
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyw1_pack(unsigned char *r, const poly *a) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < N / 2; ++i) {
|
||||
r[i] = a->coeffs[2 * i + 0] | (a->coeffs[2 * i + 1] << 4);
|
||||
}
|
||||
}
|
||||
@ -1,53 +0,0 @@
|
||||
#ifndef POLY_H
|
||||
#define POLY_H
|
||||
|
||||
#include "fips202.h"
|
||||
#include "params.h"
|
||||
#include <stdint.h>
|
||||
|
||||
typedef struct {
|
||||
uint32_t coeffs[N];
|
||||
} poly;
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_reduce(poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_csubq(poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_freeze(poly *a);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_add(poly *c, const poly *a, const poly *b);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_sub(poly *c, const poly *a, const poly *b);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_neg(poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_shiftl(poly *a, unsigned int k);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_ntt(poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(poly *c, const poly *a,
|
||||
const poly *b);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_power2round(poly *a1, poly *a0, const poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_decompose(poly *a1, poly *a0, const poly *a);
|
||||
unsigned int PQCLEAN_DILITHIUMIII_CLEAN_poly_make_hint(poly *h, const poly *a,
|
||||
const poly *b);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_use_hint(poly *a, const poly *b, const poly *h);
|
||||
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_poly_chknorm(const poly *a, uint32_t B);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform(poly *a, const unsigned char *buf);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform_eta(poly *a,
|
||||
const unsigned char seed[SEEDBYTES],
|
||||
unsigned char nonce);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform_gamma1m1(
|
||||
poly *a, const unsigned char seed[SEEDBYTES + CRHBYTES], uint16_t nonce);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyeta_pack(unsigned char *r, const poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyeta_unpack(poly *r, const unsigned char *a);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt1_pack(unsigned char *r, const poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt1_unpack(poly *r, const unsigned char *a);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt0_pack(unsigned char *r, const poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyt0_unpack(poly *r, const unsigned char *a);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyz_pack(unsigned char *r, const poly *a);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyz_unpack(poly *r, const unsigned char *a);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyw1_pack(unsigned char *r, const poly *a);
|
||||
#endif
|
||||
@ -1,367 +0,0 @@
|
||||
#include "polyvec.h"
|
||||
#include "params.h"
|
||||
#include "poly.h"
|
||||
#include <stdint.h>
|
||||
|
||||
/**************************************************************/
|
||||
/************ Vectors of polynomials of length L **************/
|
||||
/**************************************************************/
|
||||
|
||||
/*************************************************
|
||||
* Name: polyvecl_freeze
|
||||
*
|
||||
* Description: Reduce coefficients of polynomials in vector of length L
|
||||
* to standard representatives.
|
||||
*
|
||||
* Arguments: - polyvecl *v: pointer to input/output vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_freeze(polyvecl *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_freeze(v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyvecl_add
|
||||
*
|
||||
* Description: Add vectors of polynomials of length L.
|
||||
* No modular reduction is performed.
|
||||
*
|
||||
* Arguments: - polyvecl *w: pointer to output vector
|
||||
* - const polyvecl *u: pointer to first summand
|
||||
* - const polyvecl *v: pointer to second summand
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_add(polyvecl *w, const polyvecl *u,
|
||||
const polyvecl *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_add(w->vec + i, u->vec + i, v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyvecl_ntt
|
||||
*
|
||||
* Description: Forward NTT of all polynomials in vector of length L. Output
|
||||
* coefficients can be up to 16*Q larger than input coefficients.
|
||||
*
|
||||
* Arguments: - polyvecl *v: pointer to input/output vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_ntt(polyvecl *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_ntt(v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyvecl_pointwise_acc_invmontgomery
|
||||
*
|
||||
* Description: Pointwise multiply vectors of polynomials of length L, multiply
|
||||
* resulting vector by 2^{-32} and add (accumulate) polynomials
|
||||
* in it. Input/output vectors are in NTT domain representation.
|
||||
* Input coefficients are assumed to be less than 22*Q. Output
|
||||
* coeffcient are less than 2*L*Q.
|
||||
*
|
||||
* Arguments: - poly *w: output polynomial
|
||||
* - const polyvecl *u: pointer to first input vector
|
||||
* - const polyvecl *v: pointer to second input vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_pointwise_acc_invmontgomery(
|
||||
poly *w, const polyvecl *u, const polyvecl *v) {
|
||||
unsigned int i;
|
||||
poly t;
|
||||
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(w, u->vec + 0,
|
||||
v->vec + 0);
|
||||
|
||||
for (i = 1; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(&t, u->vec + i,
|
||||
v->vec + i);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_add(w, w, &t);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyvecl_chknorm
|
||||
*
|
||||
* Description: Check infinity norm of polynomials in vector of length L.
|
||||
* Assumes input coefficients to be standard representatives.
|
||||
*
|
||||
* Arguments: - const polyvecl *v: pointer to vector
|
||||
* - uint32_t B: norm bound
|
||||
*
|
||||
* Returns 0 if norm of all polynomials is strictly smaller than B and 1
|
||||
* otherwise.
|
||||
**************************************************/
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_chknorm(const polyvecl *v, uint32_t bound) {
|
||||
unsigned int i;
|
||||
int ret = 0;
|
||||
|
||||
for (i = 0; i < L; ++i) {
|
||||
ret |= PQCLEAN_DILITHIUMIII_CLEAN_poly_chknorm(v->vec + i, bound);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**************************************************************/
|
||||
/************ Vectors of polynomials of length K **************/
|
||||
/**************************************************************/
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_reduce
|
||||
*
|
||||
* Description: Reduce coefficients of polynomials in vector of length K
|
||||
* to representatives in [0,2*Q[.
|
||||
*
|
||||
* Arguments: - polyveck *v: pointer to input/output vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_reduce(polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_reduce(v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_csubq
|
||||
*
|
||||
* Description: For all coefficients of polynomials in vector of length K
|
||||
* subtract Q if coefficient is bigger than Q.
|
||||
*
|
||||
* Arguments: - polyveck *v: pointer to input/output vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_csubq(polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_csubq(v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_freeze
|
||||
*
|
||||
* Description: Reduce coefficients of polynomials in vector of length K
|
||||
* to standard representatives.
|
||||
*
|
||||
* Arguments: - polyveck *v: pointer to input/output vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_freeze(polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_freeze(v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_add
|
||||
*
|
||||
* Description: Add vectors of polynomials of length K.
|
||||
* No modular reduction is performed.
|
||||
*
|
||||
* Arguments: - polyveck *w: pointer to output vector
|
||||
* - const polyveck *u: pointer to first summand
|
||||
* - const polyveck *v: pointer to second summand
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_add(polyveck *w, const polyveck *u,
|
||||
const polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_add(w->vec + i, u->vec + i, v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_sub
|
||||
*
|
||||
* Description: Subtract vectors of polynomials of length K.
|
||||
* Assumes coefficients of polynomials in second input vector
|
||||
* to be less than 2*Q. No modular reduction is performed.
|
||||
*
|
||||
* Arguments: - polyveck *w: pointer to output vector
|
||||
* - const polyveck *u: pointer to first input vector
|
||||
* - const polyveck *v: pointer to second input vector to be
|
||||
* subtracted from first input vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_sub(polyveck *w, const polyveck *u,
|
||||
const polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_sub(w->vec + i, u->vec + i, v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_shiftl
|
||||
*
|
||||
* Description: Multiply vector of polynomials of Length K by 2^k without
|
||||
*modular reduction. Assumes input coefficients to be less than 2^{32-k}.
|
||||
*
|
||||
* Arguments: - polyveck *v: pointer to input/output vector
|
||||
* - unsigned int k: exponent
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_shiftl(polyveck *v, unsigned int k) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_shiftl(v->vec + i, k);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_ntt
|
||||
*
|
||||
* Description: Forward NTT of all polynomials in vector of length K. Output
|
||||
* coefficients can be up to 16*Q larger than input coefficients.
|
||||
*
|
||||
* Arguments: - polyveck *v: pointer to input/output vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_ntt(polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_ntt(v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_invntt_montgomery
|
||||
*
|
||||
* Description: Inverse NTT and multiplication by 2^{32} of polynomials
|
||||
* in vector of length K. Input coefficients need to be less
|
||||
* than 2*Q.
|
||||
*
|
||||
* Arguments: - polyveck *v: pointer to input/output vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_invntt_montgomery(polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_chknorm
|
||||
*
|
||||
* Description: Check infinity norm of polynomials in vector of length K.
|
||||
* Assumes input coefficients to be standard representatives.
|
||||
*
|
||||
* Arguments: - const polyveck *v: pointer to vector
|
||||
* - uint32_t B: norm bound
|
||||
*
|
||||
* Returns 0 if norm of all polynomials are strictly smaller than B and 1
|
||||
* otherwise.
|
||||
**************************************************/
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_polyveck_chknorm(const polyveck *v, uint32_t bound) {
|
||||
unsigned int i;
|
||||
int ret = 0;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
ret |= PQCLEAN_DILITHIUMIII_CLEAN_poly_chknorm(v->vec + i, bound);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_power2round
|
||||
*
|
||||
* Description: For all coefficients a of polynomials in vector of length K,
|
||||
* compute a0, a1 such that a mod Q = a1*2^D + a0
|
||||
* with -2^{D-1} < a0 <= 2^{D-1}. Assumes coefficients to be
|
||||
* standard representatives.
|
||||
*
|
||||
* Arguments: - polyveck *v1: pointer to output vector of polynomials with
|
||||
* coefficients a1
|
||||
* - polyveck *v0: pointer to output vector of polynomials with
|
||||
* coefficients Q + a0
|
||||
* - const polyveck *v: pointer to input vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_power2round(polyveck *v1, polyveck *v0,
|
||||
const polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_power2round(v1->vec + i, v0->vec + i,
|
||||
v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_decompose
|
||||
*
|
||||
* Description: For all coefficients a of polynomials in vector of length K,
|
||||
* compute high and low bits a0, a1 such a mod Q = a1*ALPHA + a0
|
||||
* with -ALPHA/2 < a0 <= ALPHA/2 except a1 = (Q-1)/ALPHA where we
|
||||
* set a1 = 0 and -ALPHA/2 <= a0 = a mod Q - Q < 0.
|
||||
* Assumes coefficients to be standard representatives.
|
||||
*
|
||||
* Arguments: - polyveck *v1: pointer to output vector of polynomials with
|
||||
* coefficients a1
|
||||
* - polyveck *v0: pointer to output vector of polynomials with
|
||||
* coefficients Q + a0
|
||||
* - const polyveck *v: pointer to input vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_decompose(polyveck *v1, polyveck *v0,
|
||||
const polyveck *v) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_decompose(v1->vec + i, v0->vec + i,
|
||||
v->vec + i);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_make_hint
|
||||
*
|
||||
* Description: Compute hint vector.
|
||||
*
|
||||
* Arguments: - polyveck *h: pointer to output vector
|
||||
* - const polyveck *u: pointer to first input vector
|
||||
* - const polyveck *u: pointer to second input vector
|
||||
*
|
||||
* Returns number of 1 bits.
|
||||
**************************************************/
|
||||
unsigned int PQCLEAN_DILITHIUMIII_CLEAN_polyveck_make_hint(polyveck *h,
|
||||
const polyveck *u,
|
||||
const polyveck *v) {
|
||||
unsigned int i, s = 0;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
s += PQCLEAN_DILITHIUMIII_CLEAN_poly_make_hint(h->vec + i, u->vec + i,
|
||||
v->vec + i);
|
||||
}
|
||||
|
||||
return s;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: polyveck_use_hint
|
||||
*
|
||||
* Description: Use hint vector to correct the high bits of input vector.
|
||||
*
|
||||
* Arguments: - polyveck *w: pointer to output vector of polynomials with
|
||||
* corrected high bits
|
||||
* - const polyveck *u: pointer to input vector
|
||||
* - const polyveck *h: pointer to input hint vector
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_use_hint(polyveck *w, const polyveck *u,
|
||||
const polyveck *h) {
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_use_hint(w->vec + i, u->vec + i, h->vec + i);
|
||||
}
|
||||
}
|
||||
@ -1,54 +0,0 @@
|
||||
#ifndef POLYVEC_H
|
||||
#define POLYVEC_H
|
||||
|
||||
#include "params.h"
|
||||
#include "poly.h"
|
||||
#include <stdint.h>
|
||||
|
||||
/* Vectors of polynomials of length L */
|
||||
typedef struct {
|
||||
poly vec[L];
|
||||
} polyvecl;
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_freeze(polyvecl *v);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_add(polyvecl *w, const polyvecl *u,
|
||||
const polyvecl *v);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_ntt(polyvecl *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_pointwise_acc_invmontgomery(
|
||||
poly *w, const polyvecl *u, const polyvecl *v);
|
||||
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_chknorm(const polyvecl *v, uint32_t bound);
|
||||
|
||||
/* Vectors of polynomials of length K */
|
||||
typedef struct {
|
||||
poly vec[K];
|
||||
} polyveck;
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_reduce(polyveck *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_csubq(polyveck *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_freeze(polyveck *v);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_add(polyveck *w, const polyveck *u,
|
||||
const polyveck *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_sub(polyveck *w, const polyveck *u,
|
||||
const polyveck *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_shiftl(polyveck *v, unsigned int k);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_ntt(polyveck *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_invntt_montgomery(polyveck *v);
|
||||
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_polyveck_chknorm(const polyveck *v, uint32_t bound);
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_power2round(polyveck *v1, polyveck *v0,
|
||||
const polyveck *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_decompose(polyveck *v1, polyveck *v0,
|
||||
const polyveck *v);
|
||||
unsigned int PQCLEAN_DILITHIUMIII_CLEAN_polyveck_make_hint(polyveck *h,
|
||||
const polyveck *u,
|
||||
const polyveck *v);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_polyveck_use_hint(polyveck *w, const polyveck *u,
|
||||
const polyveck *h);
|
||||
|
||||
#endif
|
||||
@ -1,74 +0,0 @@
|
||||
#include "reduce.h"
|
||||
#include "params.h"
|
||||
#include <stdint.h>
|
||||
|
||||
/*************************************************
|
||||
* Name: montgomery_reduce
|
||||
*
|
||||
* Description: For finite field element a with 0 <= a <= Q*2^32,
|
||||
* compute r \equiv a*2^{-32} (mod Q) such that 0 <= r < 2*Q.
|
||||
*
|
||||
* Arguments: - uint64_t: finite field element a
|
||||
*
|
||||
* Returns r.
|
||||
**************************************************/
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_montgomery_reduce(uint64_t a) {
|
||||
uint64_t t;
|
||||
|
||||
t = a * QINV;
|
||||
t &= (1ULL << 32) - 1;
|
||||
t *= Q;
|
||||
t = a + t;
|
||||
t >>= 32;
|
||||
return t;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: reduce32
|
||||
*
|
||||
* Description: For finite field element a, compute r \equiv a (mod Q)
|
||||
* such that 0 <= r < 2*Q.
|
||||
*
|
||||
* Arguments: - uint32_t: finite field element a
|
||||
*
|
||||
* Returns r.
|
||||
**************************************************/
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_reduce32(uint32_t a) {
|
||||
uint32_t t;
|
||||
|
||||
t = a & 0x7FFFFF;
|
||||
a >>= 23;
|
||||
t += (a << 13) - a;
|
||||
return t;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: csubq
|
||||
*
|
||||
* Description: Subtract Q if input coefficient is bigger than Q.
|
||||
*
|
||||
* Arguments: - uint32_t: finite field element a
|
||||
*
|
||||
* Returns r.
|
||||
**************************************************/
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_csubq(uint32_t a) {
|
||||
a -= Q;
|
||||
a += ((int32_t)a >> 31) & Q;
|
||||
return a;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: freeze
|
||||
*
|
||||
* Description: For finite field element a, compute standard
|
||||
* representative r = a mod Q.
|
||||
*
|
||||
* Arguments: - uint32_t: finite field element a
|
||||
*
|
||||
* Returns r.
|
||||
**************************************************/
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_freeze(uint32_t a) {
|
||||
a = PQCLEAN_DILITHIUMIII_CLEAN_reduce32(a);
|
||||
a = PQCLEAN_DILITHIUMIII_CLEAN_csubq(a);
|
||||
return a;
|
||||
}
|
||||
@ -1,21 +0,0 @@
|
||||
#ifndef REDUCE_H
|
||||
#define REDUCE_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define MONT 4193792U // 2^32 % Q
|
||||
#define QINV 4236238847U // -q^(-1) mod 2^32
|
||||
|
||||
/* a <= Q*2^32 => r < 2*Q */
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_montgomery_reduce(uint64_t a);
|
||||
|
||||
/* r < 2*Q */
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_reduce32(uint32_t a);
|
||||
|
||||
/* a < 2*Q => r < Q */
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_csubq(uint32_t a);
|
||||
|
||||
/* r < Q */
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_freeze(uint32_t a);
|
||||
|
||||
#endif
|
||||
@ -1,119 +0,0 @@
|
||||
#include "params.h"
|
||||
#include <stdint.h>
|
||||
|
||||
/*************************************************
|
||||
* Name: power2round
|
||||
*
|
||||
* Description: For finite field element a, compute a0, a1 such that
|
||||
* a mod Q = a1*2^D + a0 with -2^{D-1} < a0 <= 2^{D-1}.
|
||||
* Assumes a to be standard representative.
|
||||
*
|
||||
* Arguments: - uint32_t a: input element
|
||||
* - uint32_t *a0: pointer to output element Q + a0
|
||||
*
|
||||
* Returns a1.
|
||||
**************************************************/
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_power2round(uint32_t a, uint32_t *a0) {
|
||||
int32_t t;
|
||||
|
||||
/* Centralized remainder mod 2^D */
|
||||
t = a & ((1 << D) - 1);
|
||||
t -= (1 << (D - 1)) + 1;
|
||||
t += (t >> 31) & (1 << D);
|
||||
t -= (1 << (D - 1)) - 1;
|
||||
*a0 = Q + t;
|
||||
a = (a - t) >> D;
|
||||
return a;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: decompose
|
||||
*
|
||||
* Description: For finite field element a, compute high and low bits a0, a1
|
||||
*such that a mod Q = a1*ALPHA + a0 with -ALPHA/2 < a0 <= ALPHA/2 except if a1 =
|
||||
*(Q-1)/ALPHA where we set a1 = 0 and -ALPHA/2 <= a0 = a mod Q - Q < 0. Assumes
|
||||
*a to be standard representative.
|
||||
*
|
||||
* Arguments: - uint32_t a: input element
|
||||
* - uint32_t *a0: pointer to output element Q + a0
|
||||
*
|
||||
* Returns a1.
|
||||
**************************************************/
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_decompose(uint32_t a, uint32_t *a0) {
|
||||
#if ALPHA != (Q - 1) / 16
|
||||
#error "decompose assumes ALPHA == (Q-1)/16"
|
||||
#endif
|
||||
int32_t t, u;
|
||||
|
||||
/* Centralized remainder mod ALPHA */
|
||||
t = a & 0x7FFFF;
|
||||
t += (a >> 19) << 9;
|
||||
t -= ALPHA / 2 + 1;
|
||||
t += (t >> 31) & ALPHA;
|
||||
t -= ALPHA / 2 - 1;
|
||||
a -= t;
|
||||
|
||||
/* Divide by ALPHA (possible to avoid) */
|
||||
u = a - 1;
|
||||
u >>= 31;
|
||||
a = (a >> 19) + 1;
|
||||
a -= u & 1;
|
||||
|
||||
/* Border case */
|
||||
*a0 = Q + t - (a >> 4);
|
||||
a &= 0xF;
|
||||
return a;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: make_hint
|
||||
*
|
||||
* Description: Compute hint bit indicating whether or not high bits of two
|
||||
* finite field elements differ. Assumes input elements to be
|
||||
* standard representatives.
|
||||
*
|
||||
* Arguments: - uint32_t a: first input element
|
||||
* - uint32_t b: second input element
|
||||
*
|
||||
* Returns 1 if high bits of a and b differ and 0 otherwise.
|
||||
**************************************************/
|
||||
unsigned int PQCLEAN_DILITHIUMIII_CLEAN_make_hint(const uint32_t a,
|
||||
const uint32_t b) {
|
||||
uint32_t t;
|
||||
|
||||
return PQCLEAN_DILITHIUMIII_CLEAN_decompose(a, &t) !=
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_decompose(b, &t);
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: use_hint
|
||||
*
|
||||
* Description: Correct high bits according to hint.
|
||||
*
|
||||
* Arguments: - uint32_t a: input element
|
||||
* - unsigned int hint: hint bit
|
||||
*
|
||||
* Returns corrected high bits.
|
||||
**************************************************/
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_use_hint(const uint32_t a,
|
||||
const unsigned int hint) {
|
||||
uint32_t a0, a1;
|
||||
|
||||
a1 = PQCLEAN_DILITHIUMIII_CLEAN_decompose(a, &a0);
|
||||
if (hint == 0) {
|
||||
return a1;
|
||||
}
|
||||
if (a0 > Q) {
|
||||
return (a1 + 1) & 0xF;
|
||||
}
|
||||
return (a1 - 1) & 0xF;
|
||||
|
||||
/* If decompose does not divide out ALPHA:
|
||||
if(hint == 0)
|
||||
return a1;
|
||||
else if(a0 > Q)
|
||||
return (a1 + ALPHA) % (Q - 1);
|
||||
else
|
||||
return (a1 - ALPHA) % (Q - 1);
|
||||
*/
|
||||
}
|
||||
@ -1,11 +0,0 @@
|
||||
#ifndef ROUNDING_H
|
||||
#define ROUNDING_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_power2round(uint32_t a, uint32_t *a0);
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_decompose(uint32_t a, uint32_t *a0);
|
||||
unsigned int PQCLEAN_DILITHIUMIII_CLEAN_make_hint(uint32_t a, uint32_t b);
|
||||
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_use_hint(uint32_t a, unsigned int hint);
|
||||
|
||||
#endif
|
||||
@ -1,402 +0,0 @@
|
||||
#include "sign.h"
|
||||
#include "fips202.h"
|
||||
#include "packing.h"
|
||||
#include "params.h"
|
||||
#include "poly.h"
|
||||
#include "polyvec.h"
|
||||
#include "randombytes.h"
|
||||
#include <stdint.h>
|
||||
|
||||
/*************************************************
|
||||
* Name: expand_mat
|
||||
*
|
||||
* Description: Implementation of ExpandA. Generates matrix A with uniformly
|
||||
* random coefficients a_{i,j} by performing rejection
|
||||
* sampling on the output stream of SHAKE128(rho|i|j).
|
||||
*
|
||||
* Arguments: - polyvecl mat[K]: output matrix
|
||||
* - const unsigned char rho[]: byte array containing seed rho
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_expand_mat(polyvecl mat[K],
|
||||
const unsigned char rho[SEEDBYTES]) {
|
||||
unsigned int i, j;
|
||||
unsigned char inbuf[SEEDBYTES + 1];
|
||||
/* Don't change this to smaller values,
|
||||
* sampling later assumes sufficient SHAKE output!
|
||||
* Probability that we need more than 5 blocks: < 2^{-132}.
|
||||
* Probability that we need more than 6 blocks: < 2^{-546}. */
|
||||
unsigned char outbuf[5 * SHAKE128_RATE];
|
||||
|
||||
for (i = 0; i < SEEDBYTES; ++i) {
|
||||
inbuf[i] = rho[i];
|
||||
}
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
for (j = 0; j < L; ++j) {
|
||||
inbuf[SEEDBYTES] = i + (j << 4);
|
||||
shake128(outbuf, sizeof(outbuf), inbuf, SEEDBYTES + 1);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform(mat[i].vec + j, outbuf);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: challenge
|
||||
*
|
||||
* Description: Implementation of H. Samples polynomial with 60 nonzero
|
||||
* coefficients in {-1,1} using the output stream of
|
||||
* SHAKE256(mu|w1).
|
||||
*
|
||||
* Arguments: - poly *c: pointer to output polynomial
|
||||
* - const unsigned char mu[]: byte array containing mu
|
||||
* - const polyveck *w1: pointer to vector w1
|
||||
**************************************************/
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_challenge(poly *c, const unsigned char mu[CRHBYTES],
|
||||
const polyveck *w1) {
|
||||
unsigned int i, b, pos;
|
||||
unsigned char inbuf[CRHBYTES + K * POLW1_SIZE_PACKED];
|
||||
unsigned char outbuf[SHAKE256_RATE];
|
||||
uint64_t state[25], signs, mask;
|
||||
|
||||
for (i = 0; i < CRHBYTES; ++i) {
|
||||
inbuf[i] = mu[i];
|
||||
}
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyw1_pack(
|
||||
inbuf + CRHBYTES + i * POLW1_SIZE_PACKED, w1->vec + i);
|
||||
}
|
||||
|
||||
shake256_absorb(state, inbuf, sizeof(inbuf));
|
||||
shake256_squeezeblocks(outbuf, 1, state);
|
||||
|
||||
signs = 0;
|
||||
for (i = 0; i < 8; ++i) {
|
||||
signs |= (uint64_t)outbuf[i] << 8 * i;
|
||||
}
|
||||
|
||||
pos = 8;
|
||||
mask = 1;
|
||||
|
||||
for (i = 0; i < N; ++i) {
|
||||
c->coeffs[i] = 0;
|
||||
}
|
||||
|
||||
for (i = 196; i < 256; ++i) {
|
||||
do {
|
||||
if (pos >= SHAKE256_RATE) {
|
||||
shake256_squeezeblocks(outbuf, 1, state);
|
||||
pos = 0;
|
||||
}
|
||||
|
||||
b = outbuf[pos++];
|
||||
} while (b > i);
|
||||
|
||||
c->coeffs[i] = c->coeffs[b];
|
||||
c->coeffs[b] = (signs & mask) ? Q - 1 : 1;
|
||||
mask <<= 1;
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: crypto_sign_keypair
|
||||
*
|
||||
* Description: Generates public and private key.
|
||||
*
|
||||
* Arguments: - uint8_t *pk: pointer to output public key (allocated
|
||||
* array of CRYPTO_PUBLICKEYBYTES bytes)
|
||||
* - uint8_t *sk: pointer to output private key (allocated
|
||||
* array of CRYPTO_SECRETKEYBYTES bytes)
|
||||
*
|
||||
* Returns 0 (success)
|
||||
**************************************************/
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign_keypair(uint8_t *pk,
|
||||
uint8_t *sk) {
|
||||
unsigned int i;
|
||||
unsigned char seedbuf[3 * SEEDBYTES];
|
||||
unsigned char tr[CRHBYTES];
|
||||
unsigned char *rho, *rhoprime, *key;
|
||||
uint16_t nonce = 0;
|
||||
polyvecl mat[K];
|
||||
polyvecl s1, s1hat;
|
||||
polyveck s2, t, t1, t0;
|
||||
|
||||
/* Expand 32 bytes of randomness into rho, rhoprime and key */
|
||||
randombytes(seedbuf, SEEDBYTES);
|
||||
shake256(seedbuf, 3 * SEEDBYTES, seedbuf, SEEDBYTES);
|
||||
rho = seedbuf;
|
||||
rhoprime = rho + SEEDBYTES;
|
||||
key = rho + 2 * SEEDBYTES;
|
||||
|
||||
/* Expand matrix */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_expand_mat(mat, rho);
|
||||
|
||||
/* Sample short vectors s1 and s2 */
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform_eta(s1.vec + i, rhoprime, nonce++);
|
||||
}
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform_eta(s2.vec + i, rhoprime, nonce++);
|
||||
}
|
||||
|
||||
/* Matrix-vector multiplication */
|
||||
s1hat = s1;
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_ntt(&s1hat);
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_pointwise_acc_invmontgomery(
|
||||
t.vec + i, mat + i, &s1hat);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_reduce(t.vec + i);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(t.vec + i);
|
||||
}
|
||||
|
||||
/* Add noise vector s2 */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_add(&t, &t, &s2);
|
||||
|
||||
/* Extract t1 and write public key */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_freeze(&t);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_power2round(&t1, &t0, &t);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_pack_pk(pk, rho, &t1);
|
||||
|
||||
/* Compute CRH(rho, t1) and write secret key */
|
||||
shake256(tr, CRHBYTES, pk, CRYPTO_PUBLICKEYBYTES);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_pack_sk(sk, rho, key, tr, &s1, &s2, &t0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: crypto_sign
|
||||
*
|
||||
* Description: Compute signed message.
|
||||
*
|
||||
* Arguments: - uint8_t *sm: pointer to output signed message (allocated
|
||||
* array with CRYPTO_BYTES + mlen bytes),
|
||||
* can be equal to m
|
||||
* - size_t *smlen: pointer to output length of signed
|
||||
* message
|
||||
* - const uint8_t *m: pointer to message to be signed
|
||||
* - size_t mlen: length of message
|
||||
* - const uint8_t *sk: pointer to bit-packed secret key
|
||||
*
|
||||
* Returns 0 (success)
|
||||
**************************************************/
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign(uint8_t *sm,
|
||||
size_t *smlen,
|
||||
const uint8_t *m,
|
||||
size_t mlen,
|
||||
const uint8_t *sk) {
|
||||
unsigned long long i, j;
|
||||
unsigned int n;
|
||||
unsigned char seedbuf[2 * SEEDBYTES + CRHBYTES]; // TODO(thom): nonce in seedbuf (2x)
|
||||
unsigned char tr[CRHBYTES];
|
||||
unsigned char *rho, *key, *mu;
|
||||
uint16_t nonce = 0;
|
||||
poly c, chat;
|
||||
polyvecl mat[K], s1, y, yhat, z;
|
||||
polyveck s2, t0, w, w1;
|
||||
polyveck h, wcs2, wcs20, ct0, tmp;
|
||||
|
||||
rho = seedbuf;
|
||||
key = seedbuf + SEEDBYTES;
|
||||
mu = seedbuf + 2 * SEEDBYTES;
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_unpack_sk(rho, key, tr, &s1, &s2, &t0, sk);
|
||||
|
||||
/* Copy tr and message into the sm buffer,
|
||||
* backwards since m and sm can be equal in SUPERCOP API */
|
||||
for (i = 1; i <= mlen; ++i) {
|
||||
sm[CRYPTO_BYTES + mlen - i] = m[mlen - i];
|
||||
}
|
||||
for (i = 0; i < CRHBYTES; ++i) {
|
||||
sm[CRYPTO_BYTES - CRHBYTES + i] = tr[i];
|
||||
}
|
||||
|
||||
/* Compute CRH(tr, msg) */
|
||||
shake256(mu, CRHBYTES, sm + CRYPTO_BYTES - CRHBYTES, CRHBYTES + mlen);
|
||||
|
||||
/* Expand matrix and transform vectors */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_expand_mat(mat, rho);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_ntt(&s1);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_ntt(&s2);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_ntt(&t0);
|
||||
|
||||
rej:
|
||||
/* Sample intermediate vector y */
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_uniform_gamma1m1(y.vec + i, key, nonce++);
|
||||
}
|
||||
|
||||
/* Matrix-vector multiplication */
|
||||
yhat = y;
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_ntt(&yhat);
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_pointwise_acc_invmontgomery(
|
||||
w.vec + i, mat + i, &yhat);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_reduce(w.vec + i);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(w.vec + i);
|
||||
}
|
||||
|
||||
/* Decompose w and call the random oracle */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_csubq(&w);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_decompose(&w1, &tmp, &w);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_challenge(&c, mu, &w1);
|
||||
|
||||
/* Compute z, reject if it reveals secret */
|
||||
chat = c;
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_ntt(&chat);
|
||||
for (i = 0; i < L; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(z.vec + i, &chat,
|
||||
s1.vec + i);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(z.vec + i);
|
||||
}
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_add(&z, &z, &y);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_freeze(&z);
|
||||
if (PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_chknorm(&z, GAMMA1 - BETA)) {
|
||||
goto rej;
|
||||
}
|
||||
|
||||
/* Compute w - cs2, reject if w1 can not be computed from it */
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(wcs2.vec + i, &chat,
|
||||
s2.vec + i);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(wcs2.vec + i);
|
||||
}
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_sub(&wcs2, &w, &wcs2);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_freeze(&wcs2);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_decompose(&tmp, &wcs20, &wcs2);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_csubq(&wcs20);
|
||||
if (PQCLEAN_DILITHIUMIII_CLEAN_polyveck_chknorm(&wcs20, GAMMA2 - BETA)) {
|
||||
goto rej;
|
||||
}
|
||||
|
||||
for (i = 0; i < K; ++i) {
|
||||
for (j = 0; j < N; ++j) {
|
||||
if (tmp.vec[i].coeffs[j] != w1.vec[i].coeffs[j]) {
|
||||
goto rej;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Compute hints for w1 */
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(ct0.vec + i, &chat,
|
||||
t0.vec + i);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_invntt_montgomery(ct0.vec + i);
|
||||
}
|
||||
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_csubq(&ct0);
|
||||
if (PQCLEAN_DILITHIUMIII_CLEAN_polyveck_chknorm(&ct0, GAMMA2)) {
|
||||
goto rej;
|
||||
}
|
||||
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_add(&tmp, &wcs2, &ct0);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_csubq(&tmp);
|
||||
n = PQCLEAN_DILITHIUMIII_CLEAN_polyveck_make_hint(&h, &wcs2, &tmp);
|
||||
if (n > OMEGA) {
|
||||
goto rej;
|
||||
}
|
||||
|
||||
/* Write signature */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_pack_sig(sm, &z, &h, &c);
|
||||
|
||||
*smlen = mlen + CRYPTO_BYTES;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*************************************************
|
||||
* Name: crypto_sign_open
|
||||
*
|
||||
* Description: Verify signed message.
|
||||
*
|
||||
* Arguments: - uint8_t *m: pointer to output message (allocated
|
||||
* array with smlen bytes), can be equal to sm
|
||||
* - size_t *mlen: pointer to output length of message
|
||||
* - const uint8_t *sm: pointer to signed message
|
||||
* - size_t smlen: length of signed message
|
||||
* - const uint8_t *sk: pointer to bit-packed public key
|
||||
*
|
||||
* Returns 0 if signed message could be verified correctly and -1 otherwise
|
||||
**************************************************/
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign_open(uint8_t *m,
|
||||
size_t *mlen,
|
||||
const uint8_t *sm,
|
||||
size_t smlen,
|
||||
const uint8_t *pk) {
|
||||
unsigned long long i;
|
||||
unsigned char rho[SEEDBYTES];
|
||||
unsigned char mu[CRHBYTES];
|
||||
poly c, chat, cp;
|
||||
polyvecl mat[K], z;
|
||||
polyveck t1, w1, h, tmp1, tmp2;
|
||||
|
||||
if (smlen < CRYPTO_BYTES) {
|
||||
goto badsig;
|
||||
}
|
||||
|
||||
*mlen = smlen - CRYPTO_BYTES;
|
||||
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_unpack_pk(rho, &t1, pk);
|
||||
if (PQCLEAN_DILITHIUMIII_CLEAN_unpack_sig(&z, &h, &c, sm)) {
|
||||
goto badsig;
|
||||
}
|
||||
if (PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_chknorm(&z, GAMMA1 - BETA)) {
|
||||
goto badsig;
|
||||
}
|
||||
|
||||
/* Compute CRH(CRH(rho, t1), msg) using m as "playground" buffer */
|
||||
if (sm != m) {
|
||||
for (i = 0; i < *mlen; ++i) {
|
||||
m[CRYPTO_BYTES + i] = sm[CRYPTO_BYTES + i];
|
||||
}
|
||||
}
|
||||
|
||||
shake256(m + CRYPTO_BYTES - CRHBYTES, CRHBYTES, pk, CRYPTO_PUBLICKEYBYTES);
|
||||
shake256(mu, CRHBYTES, m + CRYPTO_BYTES - CRHBYTES, CRHBYTES + *mlen);
|
||||
|
||||
/* Matrix-vector multiplication; compute Az - c2^dt1 */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_expand_mat(mat, rho);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_ntt(&z);
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyvecl_pointwise_acc_invmontgomery(tmp1.vec + i,
|
||||
mat + i, &z);
|
||||
}
|
||||
|
||||
chat = c;
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_ntt(&chat);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_shiftl(&t1, D);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_ntt(&t1);
|
||||
for (i = 0; i < K; ++i) {
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_poly_pointwise_invmontgomery(tmp2.vec + i, &chat,
|
||||
t1.vec + i);
|
||||
}
|
||||
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_sub(&tmp1, &tmp1, &tmp2);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_reduce(&tmp1);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_invntt_montgomery(&tmp1);
|
||||
|
||||
/* Reconstruct w1 */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_csubq(&tmp1);
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_polyveck_use_hint(&w1, &tmp1, &h);
|
||||
|
||||
/* Call random oracle and verify challenge */
|
||||
PQCLEAN_DILITHIUMIII_CLEAN_challenge(&cp, mu, &w1);
|
||||
for (i = 0; i < N; ++i) {
|
||||
if (c.coeffs[i] != cp.coeffs[i]) {
|
||||
goto badsig;
|
||||
}
|
||||
}
|
||||
|
||||
/* All good, copy msg, return 0 */
|
||||
for (i = 0; i < *mlen; ++i) {
|
||||
m[i] = sm[CRYPTO_BYTES + i];
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
/* Signature verification failed */
|
||||
badsig:
|
||||
*mlen = 0;
|
||||
for (i = 0; i < smlen; ++i) {
|
||||
m[i] = 0;
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
@ -1,30 +0,0 @@
|
||||
#ifndef SIGN_H
|
||||
#define SIGN_H
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include "params.h"
|
||||
#include "poly.h"
|
||||
#include "polyvec.h"
|
||||
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_expand_mat(polyvecl mat[K],
|
||||
const uint8_t rho[SEEDBYTES]);
|
||||
void PQCLEAN_DILITHIUMIII_CLEAN_challenge(poly *c, const uint8_t mu[CRHBYTES],
|
||||
const polyveck *w1);
|
||||
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign_keypair(uint8_t *pk,
|
||||
uint8_t *sk);
|
||||
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign(uint8_t *sm,
|
||||
size_t *smlen,
|
||||
const uint8_t *m,
|
||||
size_t mlen,
|
||||
const uint8_t *sk);
|
||||
|
||||
int PQCLEAN_DILITHIUMIII_CLEAN_crypto_sign_open(uint8_t *m,
|
||||
size_t *mlen,
|
||||
const uint8_t *sm,
|
||||
size_t smlen,
|
||||
const uint8_t *pk);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user