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Add MQDSS AVX2 implementations (#288)

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* Add AVX2 version of mqdss

* Fix duplicate consistency
This commit is contained in:
Thom Wiggers 2020-06-26 08:01:23 +02:00 committed by GitHub
parent ea5a83f7a8
commit 90630db2eb
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
27 changed files with 2135 additions and 2 deletions
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9
crypto_sign/mqdss-48/META.yml
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@ -16,3 +16,12 @@ auxiliary-submitters:
implementations:
- name: clean
version: https://github.com/joostrijneveld/MQDSS/commit/00608d7610262ff07b1834885d32bc3fd27ef5e1
- name: avx2
version: https://github.com/joostrijneveld/MQDSS/commit/00608d7610262ff07b1834885d32bc3fd27ef5e1
supported_platforms:
- architecture: x86_64
required_flags:
- avx2
- architecture: x86
required_flags:
- avx2

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crypto_sign/mqdss-48/avx2/LICENSE Normal file
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crypto_sign/mqdss-48/avx2/Makefile Normal file
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# This Makefile can be used with GNU Make or BSD Make
LIB=libmqdss-48_avx2.a
HEADERS = params.h gf31.h mq.h api.h
OBJECTS = gf31.o mq.o sign.o
CFLAGS=-O3 -Wall -Wconversion -Wextra -Wpedantic -Wvla -Werror \
-Wmissing-prototypes -Wredundant-decls -std=c99 -mavx2 \
-I../../../common $(EXTRAFLAGS)
all: $(LIB)
%.o: %.c $(HEADERS)
$(CC) $(CFLAGS) -c -o $@ $<
$(LIB): $(OBJECTS)
$(AR) -r $@ $(OBJECTS)
clean:
$(RM) $(OBJECTS)
$(RM) $(LIB)

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crypto_sign/mqdss-48/avx2/Makefile.Microsoft_nmake Normal file
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# This Makefile can be used with Microsoft Visual Studio's nmake using the command:
# nmake /f Makefile.Microsoft_nmake
LIBRARY=libmqdss-48_avx2.lib
OBJECTS=gf31.obj mq.obj sign.obj
CFLAGS=/nologo /O2 /I ..\..\..\common /W4 /WX /arch:AVX2
all: $(LIBRARY)
# Make sure objects are recompiled if headers change.
$(OBJECTS): *.h
$(LIBRARY): $(OBJECTS)
LIB.EXE /NOLOGO /WX /OUT:$@ $**
clean:
-DEL $(OBJECTS)
-DEL $(LIBRARY)

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crypto_sign/mqdss-48/avx2/api.h Normal file
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#ifndef PQCLEAN_MQDSS48_AVX2_API_H
#define PQCLEAN_MQDSS48_AVX2_API_H
#include <stddef.h>
#include <stdint.h>
#define PQCLEAN_MQDSS48_AVX2_CRYPTO_ALGNAME "MQDSS-48"
#define PQCLEAN_MQDSS48_AVX2_CRYPTO_SECRETKEYBYTES 16
#define PQCLEAN_MQDSS48_AVX2_CRYPTO_PUBLICKEYBYTES 46
#define PQCLEAN_MQDSS48_AVX2_CRYPTO_BYTES 28400
/*
* Generates an MQDSS key pair.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_keypair(
uint8_t *pk, uint8_t *sk);
/**
* Returns an array containing a detached signature.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_signature(
uint8_t *sig, size_t *siglen,
const uint8_t *m, size_t mlen, const uint8_t *sk);
/**
* Verifies a detached signature and message under a given public key.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_verify(
const uint8_t *sig, size_t siglen,
const uint8_t *m, size_t mlen, const uint8_t *pk);
/**
* Returns an array containing the signature followed by the message.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign(
uint8_t *sm, size_t *smlen,
const uint8_t *m, size_t mlen, const uint8_t *sk);
/**
* Verifies a given signature-message pair under a given public key.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_open(
uint8_t *m, size_t *mlen,
const uint8_t *sm, size_t smlen, const uint8_t *pk);
#endif

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crypto_sign/mqdss-48/avx2/gf31.c Normal file
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#include "params.h"
#include "fips202.h"
#include "gf31.h"
#include <immintrin.h>
#include <stdint.h>
#include <string.h>
/* Given a vector of N elements in the range [0, 31], this reduces the elements
to the range [0, 30] by mapping 31 to 0 (i.e reduction mod 31) */
void PQCLEAN_MQDSS48_AVX2_vgf31_unique(gf31 *out, gf31 *in) {
__m256i x;
__m256i _w31 = _mm256_set1_epi16(31);
int i;
for (i = 0; i < (N >> 4); ++i) {
x = _mm256_loadu_si256((__m256i const *) (in + 16 * i));
x = _mm256_xor_si256(x, _mm256_and_si256(_w31, _mm256_cmpeq_epi16(x, _w31)));
_mm256_storeu_si256((__m256i *)(out + i * 16), x);
}
}
/* This function acts on vectors with 64 gf31 elements.
It performs one reduction step and guarantees output in [0, 30],
but requires input to be in [0, 32768). */
void PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(gf31 *out, gf31 *in) {
__m256i x;
__m256i _w2114 = _mm256_set1_epi32(2114 * 65536 + 2114);
__m256i _w31 = _mm256_set1_epi16(31);
int i;
for (i = 0; i < (N >> 4); ++i) {
x = _mm256_loadu_si256((__m256i const *) (in + 16 * i));
x = _mm256_sub_epi16(x, _mm256_mullo_epi16(_w31, _mm256_mulhi_epi16(x, _w2114)));
x = _mm256_xor_si256(x, _mm256_and_si256(_w31, _mm256_cmpeq_epi16(x, _w31)));
_mm256_storeu_si256((__m256i *)(out + i * 16), x);
}
}
/* Given a seed, samples len gf31 elements (in the range [0, 30]), and places
them in a vector of 16-bit elements */
void PQCLEAN_MQDSS48_AVX2_gf31_nrand(gf31 *out, size_t len, const uint8_t *seed, size_t seedlen) {
size_t i = 0, j;
shake256ctx shakestate;
uint8_t shakeblock[SHAKE256_RATE];
shake256_absorb(&shakestate, seed, seedlen);
while (i < len) {
shake256_squeezeblocks(shakeblock, 1, &shakestate);
for (j = 0; j < SHAKE256_RATE && i < len; j++) {
if ((shakeblock[j] & 31) != 31) {
out[i] = (shakeblock[j] & 31);
i++;
}
}
}
shake256_ctx_release(&shakestate);
}
/* Given a seed, samples len gf31 elements, transposed into unsigned range,
i.e. in the range [-15, 15], and places them in an array of 8-bit integers.
This is used for the expansion of F, which wants packed elements. */
void PQCLEAN_MQDSS48_AVX2_gf31_nrand_schar(signed char *out, size_t len, const uint8_t *seed, size_t seedlen) {
size_t i = 0, j;
shake256ctx shakestate;
uint8_t shakeblock[SHAKE256_RATE];
shake256_absorb(&shakestate, seed, seedlen);
while (i < len) {
shake256_squeezeblocks(shakeblock, 1, &shakestate);
for (j = 0; j < SHAKE256_RATE && i < len; j++) {
if ((shakeblock[j] & 31) != 31) {
out[i] = (signed char)((shakeblock[j] & 31) - 15);
i++;
}
}
}
shake256_ctx_release(&shakestate);
}
/* Unpacks an array of packed GF31 elements to one element per gf31.
Assumes that there is sufficient empty space available at the end of the
array to unpack. Can perform in-place. */
void PQCLEAN_MQDSS48_AVX2_gf31_nunpack(gf31 *out, const uint8_t *in, size_t n) {
size_t i;
size_t j = ((n * 5) >> 3) - 1;
unsigned int d = 0;
for (i = n; i > 0; i--) {
out[i - 1] = (gf31)((in[j] >> d) & 31);
d += 5;
if (d > 8) {
d -= 8;
j--;
out[i - 1] = (gf31)(out[i - 1] ^ ((in[j] << (5 - d)) & 31));
}
}
}
/* Packs an array of GF31 elements from gf31's to concatenated 5-bit values.
Assumes that there is sufficient space available to unpack.
Can perform in-place. */
void PQCLEAN_MQDSS48_AVX2_gf31_npack(uint8_t *out, const gf31 *in, size_t n) {
unsigned int i = 0;
unsigned int j;
int d = 3;
/* There will be ceil(5n / 8) output blocks */
memset(out, 0, (size_t)((5 * n + 7) & ~7U) >> 3);
for (j = 0; j < n; j++) {
if (d < 0) {
d += 8;
out[i] = (uint8_t)((out[i] & (255 << (d - 3))) |
((in[j] >> (8 - d)) & ~(255 << (d - 3))));
i++;
}
out[i] = (uint8_t)((out[i] & ~(31 << d)) | ((in[j] << d) & (31 << d)));
d -= 5;
}
}

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#ifndef MQDSS_GF31_H
#define MQDSS_GF31_H
#include <stddef.h>
#include <stdint.h>
typedef unsigned short gf31;
/* Given a vector of elements in the range [0, 31], this reduces the elements
to the range [0, 30] by mapping 31 to 0 (i.e reduction mod 31) */
void PQCLEAN_MQDSS48_AVX2_vgf31_unique(gf31 *out, gf31 *in);
/* Given a vector of 16-bit integers (i.e. in [0, 65535], this reduces the
elements to the range [0, 30] by mapping 31 to 0 (i.e reduction mod 31) */
void PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(gf31 *out, gf31 *in);
/* Given a seed, samples len gf31 elements (in the range [0, 30]), and places
them in a vector of 16-bit elements */
void PQCLEAN_MQDSS48_AVX2_gf31_nrand(gf31 *out, size_t len, const uint8_t *seed, size_t seedlen);
/* Given a seed, samples len gf31 elements, transposed into unsigned range,
i.e. in the range [-15, 15], and places them in an array of 8-bit integers.
This is used for the expansion of F, which wants packed elements. */
void PQCLEAN_MQDSS48_AVX2_gf31_nrand_schar(signed char *out, size_t len, const uint8_t *seed, size_t seedlen);
/* Unpacks an array of packed GF31 elements to one element per gf31.
Assumes that there is sufficient empty space available at the end of the
array to unpack. Can perform in-place. */
void PQCLEAN_MQDSS48_AVX2_gf31_nunpack(gf31 *out, const uint8_t *in, size_t n);
/* Packs an array of GF31 elements from gf31's to concatenated 5-bit values.
Assumes that there is sufficient space available to unpack.
Can perform in-place. */
void PQCLEAN_MQDSS48_AVX2_gf31_npack(uint8_t *out, const gf31 *in, size_t n);
#endif

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#include "mq.h"
#include "params.h"
#include <immintrin.h>
#include <stdio.h>
static inline __m256i reduce_16(__m256i r, __m256i _w31, __m256i _w2114) {
__m256i exp = _mm256_mulhi_epi16(r, _w2114);
return _mm256_sub_epi16(r, _mm256_mullo_epi16(_w31, exp));
}
/* Computes all products x_i * x_j, returns in reduced form */
inline static
void generate_quadratic_terms( unsigned char *xij, const gf31 *x ) {
__m256i mask_2114 = _mm256_set1_epi16( 2114 );
__m256i mask_31 = _mm256_set1_epi16( 31 );
__m256i xi[4];
xi[0] = _mm256_loadu_si256((__m256i const *) (x));
xi[1] = _mm256_loadu_si256((__m256i const *) (x + 16));
xi[2] = _mm256_loadu_si256((__m256i const *) (x + 32));
xi[3] = _mm256_setzero_si256();
__m256i xixj[4];
xixj[0] = _mm256_setzero_si256();
xixj[1] = _mm256_setzero_si256();
xixj[2] = _mm256_setzero_si256();
xixj[3] = _mm256_setzero_si256();
int k = 0;
for (int i = 0; i < 32; i++) {
__m256i br_xi = _mm256_set1_epi16( (short)x[i] );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_mullo_epi16( xi[j], br_xi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r = _mm256_packs_epi16(xixj[0], xixj[1]);
r = _mm256_permute4x64_epi64(r, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r );
k += i + 1;
}
for (int i = 32; i < N; i++) {
__m256i br_xi = _mm256_set1_epi16( (short)x[i] );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_mullo_epi16( xi[j], br_xi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r0 = _mm256_packs_epi16(xixj[0], xixj[1]);
r0 = _mm256_permute4x64_epi64(r0, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r0 );
__m256i r1 = _mm256_packs_epi16(xixj[2], xixj[3]);
r1 = _mm256_permute4x64_epi64(r1, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + 32 + k ), r1 );
k += i + 1;
}
}
/* Computes all terms (x_i * y_j) + (x_j * y_i), returns in reduced form */
inline static
void generate_xiyj_p_xjyi_terms( unsigned char *xij, const gf31 *x, const gf31 *y ) {
__m256i mask_2114 = _mm256_set1_epi16( 2114 );
__m256i mask_31 = _mm256_set1_epi16( 31 );
__m256i xiyi[4];
xiyi[0] = _mm256_xor_si256(_mm256_loadu_si256((__m256i const *) (x)), _mm256_slli_si256( _mm256_loadu_si256((__m256i const *) (y)), 1 ));
xiyi[1] = _mm256_xor_si256(_mm256_loadu_si256((__m256i const *) (x + 16)), _mm256_slli_si256( _mm256_loadu_si256((__m256i const *) (y + 16)), 1 ));
xiyi[2] = _mm256_xor_si256(_mm256_loadu_si256((__m256i const *) (x + 32)), _mm256_slli_si256( _mm256_loadu_si256((__m256i const *) (y + 32)), 1 ));
xiyi[3] = _mm256_setzero_si256();
__m256i xixj[4];
xixj[0] = _mm256_setzero_si256();
xixj[1] = _mm256_setzero_si256();
xixj[2] = _mm256_setzero_si256();
xixj[3] = _mm256_setzero_si256();
int k = 0;
for (int i = 0; i < 32; i++) {
__m256i br_yixi = _mm256_set1_epi16( (short)((x[i] << 8)^y[i]) );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_maddubs_epi16( xiyi[j], br_yixi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r = _mm256_packs_epi16(xixj[0], xixj[1]);
r = _mm256_permute4x64_epi64(r, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r );
k += i + 1;
}
for (int i = 32; i < N; i++) {
__m256i br_yixi = _mm256_set1_epi16( (short)((x[i] << 8)^y[i]) );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_maddubs_epi16( xiyi[j], br_yixi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r0 = _mm256_packs_epi16(xixj[0], xixj[1]);
r0 = _mm256_permute4x64_epi64(r0, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r0 );
__m256i r1 = _mm256_packs_epi16(xixj[2], xixj[3]);
r1 = _mm256_permute4x64_epi64(r1, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + 32 + k ), r1 );
k += i + 1;
}
}
#define EVAL_YMM_0(xx) {\
__m128i tmp = _mm256_castsi256_si128(xx); \
for (int macro_i = 0; macro_i < 8; macro_i++) { \
__m256i _xi = _mm256_broadcastw_epi16(tmp); \
tmp = _mm_srli_si128(tmp, 2); \
for (int macro_j = 0; macro_j < (N/16); macro_j++) { \
__m256i coeff = _mm256_loadu_si256((__m256i const *) F); \
F += 32; \
yy[macro_j] = _mm256_add_epi16(yy[macro_j], _mm256_maddubs_epi16(_xi, coeff)); \
} \
} \
}
#define EVAL_YMM_1(xx) {\
__m128i tmp = _mm256_extracti128_si256(xx, 1); \
for (int macro_i = 0; macro_i < 8; macro_i++) { \
__m256i _xi = _mm256_broadcastw_epi16(tmp); \
tmp = _mm_srli_si128(tmp, 2); \
for (int macro_j = 0; macro_j < (N/16); macro_j++) { \
__m256i coeff = _mm256_loadu_si256((__m256i const *) F); \
F += 32; \
yy[macro_j] = _mm256_add_epi16(yy[macro_j], _mm256_maddubs_epi16(_xi, coeff)); \
} \
} \
}
#define REDUCE_(yy) { \
(yy)[0] = reduce_16((yy)[0], mask_reduce, mask_2114); \
(yy)[1] = reduce_16((yy)[1], mask_reduce, mask_2114); \
(yy)[2] = reduce_16((yy)[2], mask_reduce, mask_2114); \
}
/* Evaluates the MQ function on a vector of N gf31 elements x (expected to be
in reduced 5-bit representation). Expects the coefficients in F to be in
signed representation (i.e. [-15, 15], packed bytewise).
Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS48_AVX2_MQ(gf31 *fx, const gf31 *x, const signed char *F) {
__m256i mask_2114 = _mm256_set1_epi32(2114 * 65536 + 2114);
__m256i mask_reduce = _mm256_srli_epi16(_mm256_cmpeq_epi16(mask_2114, mask_2114), 11);
__m256i xi[4];
xi[0] = _mm256_loadu_si256((__m256i const *) (x));
xi[1] = _mm256_loadu_si256((__m256i const *) (x + 16));
xi[2] = _mm256_loadu_si256((__m256i const *) (x + 32));
xi[3] = _mm256_setzero_si256();
__m256i _zero = _mm256_setzero_si256();
xi[0] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_zero, xi[0])), xi[0]);
xi[1] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_zero, xi[1])), xi[1]);
xi[2] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_zero, xi[2])), xi[2]);
__m256i x1 = _mm256_packs_epi16(xi[0], xi[1]);
x1 = _mm256_permute4x64_epi64(x1, 0xd8); // 3,1,2,0
__m256i x2 = _mm256_packs_epi16(xi[2], xi[3]);
x2 = _mm256_permute4x64_epi64(x2, 0xd8); // 3,1,2,0
__m256i yy[M / 16];
yy[0] = _zero;
yy[1] = _zero;
yy[2] = _zero;
EVAL_YMM_0(x1)
EVAL_YMM_1(x1)
EVAL_YMM_0(x2)
REDUCE_(yy)
__m256i xixj[38];
generate_quadratic_terms( (unsigned char *) xixj, x );
for (int i = 0 ; i < 36 ; i += 2) {
EVAL_YMM_0(xixj[i])
EVAL_YMM_1(xixj[i])
EVAL_YMM_0(xixj[i + 1])
EVAL_YMM_1(xixj[i + 1])
REDUCE_(yy)
}
EVAL_YMM_0(xixj[36]) {
__m128i tmp = _mm256_extracti128_si256(xixj[36], 1);
for (int i = 0; i < 4; i++) {
__m256i _xi = _mm256_broadcastw_epi16(tmp);
tmp = _mm_srli_si128(tmp, 2);
for (int j = 0; j < (N / 16); j++) {
__m256i coeff = _mm256_loadu_si256((__m256i const *) F);
F += 32;
yy[j] = _mm256_add_epi16(yy[j], _mm256_maddubs_epi16(_xi, coeff));
}
}
}
REDUCE_(yy)
yy[0] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[0])), yy[0]);
yy[1] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[1])), yy[1]);
yy[2] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[2])), yy[2]);
for (int i = 0; i < (N / 16); ++i) {
_mm256_storeu_si256((__m256i *)(fx + i * 16), yy[i]);
}
}
/* Evaluates the bilinear polar form of the MQ function (i.e. G) on a vector of
N gf31 elements x (expected to be in reduced 5-bit representation). Expects
the coefficients in F to be in signed representation (i.e. [-15, 15], packed
bytewise). Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS48_AVX2_G(gf31 *fx, const gf31 *x, const gf31 *y, const signed char *F) {
__m256i mask_2114 = _mm256_set1_epi32(2114 * 65536 + 2114);
__m256i mask_reduce = _mm256_srli_epi16(_mm256_cmpeq_epi16(mask_2114, mask_2114), 11);
__m256i _zero = _mm256_setzero_si256();
__m256i yy[(M / 16)];
yy[0] = _zero;
yy[1] = _zero;
yy[2] = _zero;
F += N * M;
__m256i xixj[38];
generate_xiyj_p_xjyi_terms( (unsigned char *) xixj, x, y );
for (int i = 0 ; i < 36 ; i += 2) {
EVAL_YMM_0(xixj[i])
EVAL_YMM_1(xixj[i])
EVAL_YMM_0(xixj[i + 1])
EVAL_YMM_1(xixj[i + 1])
REDUCE_(yy)
}
EVAL_YMM_0(xixj[36]) {
__m128i tmp = _mm256_extracti128_si256(xixj[36], 1);
for (int i = 0; i < 4; i++) {
__m256i _xi = _mm256_broadcastw_epi16(tmp);
tmp = _mm_srli_si128(tmp, 2);
for (int j = 0; j < (N / 16); j++) {
__m256i coeff = _mm256_loadu_si256((__m256i const *) F);
F += 32;
yy[j] = _mm256_add_epi16(yy[j], _mm256_maddubs_epi16(_xi, coeff));
}
}
}
REDUCE_(yy)
yy[0] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[0])), yy[0]);
yy[1] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[1])), yy[1]);
yy[2] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[2])), yy[2]);
for (int i = 0; i < (N / 16); ++i) {
_mm256_storeu_si256((__m256i *)(fx + i * 16), yy[i]);
}
}

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crypto_sign/mqdss-48/avx2/mq.h Normal file
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#ifndef MQDSS_MQ_H
#define MQDSS_MQ_H
#include "gf31.h"
/* Evaluates the MQ function on a vector of N gf31 elements x (expected to be
in reduced 5-bit representation). Expects the coefficients in F to be in
signed representation (i.e. [-15, 15], packed bytewise).
Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS48_AVX2_MQ(gf31 *fx, const gf31 *x, const signed char *F);
/* Evaluates the bilinear polar form of the MQ function (i.e. G) on a vector of
N gf31 elements x (expected to be in reduced 5-bit representation). Expects
the coefficients in F to be in signed representation (i.e. [-15, 15], packed
bytewise). Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS48_AVX2_G(gf31 *fx, const gf31 *x, const gf31 *y, const signed char *F);
#endif

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#ifndef MQDSS_PARAMS_H
#define MQDSS_PARAMS_H
#define N 48
#define M N
#define F_LEN (M * (((N * (N + 1)) >> 1) + N)) /* Number of elements in F */
#define ROUNDS 184
/* Number of bytes that N, M and F_LEN elements require when packed into a byte
array, 5-bit elements packed continuously. */
/* Assumes N and M to be multiples of 8 */
#define NPACKED_BYTES ((N * 5) >> 3)
#define MPACKED_BYTES ((M * 5) >> 3)
#define FPACKED_BYTES ((F_LEN * 5) >> 3)
#define HASH_BYTES 32
#define SEED_BYTES 16
#define PK_BYTES (SEED_BYTES + MPACKED_BYTES)
#define SK_BYTES SEED_BYTES
// R, sigma_0, ROUNDS * (t1, r{0,1}, e1, c, rho)
#define SIG_LEN (2 * HASH_BYTES + ROUNDS * (2*NPACKED_BYTES + MPACKED_BYTES + HASH_BYTES + HASH_BYTES))
#endif

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#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "api.h"
#include "fips202.h"
#include "gf31.h"
#include "mq.h"
#include "params.h"
#include "randombytes.h"
/* Takes an array of len bytes and computes a hash digest.
This is used as a hash function in the Fiat-Shamir transform. */
static void H(unsigned char *out, const unsigned char *in, const size_t len) {
shake256(out, HASH_BYTES, in, len);
}
/* Takes two arrays of N packed elements and an array of M packed elements,
and computes a HASH_BYTES commitment. */
static void com_0(unsigned char *c,
const unsigned char *rho,
const unsigned char *inn, const unsigned char *inn2,
const unsigned char *inm) {
unsigned char buffer[HASH_BYTES + 2 * NPACKED_BYTES + MPACKED_BYTES];
memcpy(buffer, rho, HASH_BYTES);
memcpy(buffer + HASH_BYTES, inn, NPACKED_BYTES);
memcpy(buffer + HASH_BYTES + NPACKED_BYTES, inn2, NPACKED_BYTES);
memcpy(buffer + HASH_BYTES + 2 * NPACKED_BYTES, inm, MPACKED_BYTES);
shake256(c, HASH_BYTES, buffer, HASH_BYTES + 2 * NPACKED_BYTES + MPACKED_BYTES);
}
/* Takes an array of N packed elements and an array of M packed elements,
and computes a HASH_BYTES commitment. */
static void com_1(unsigned char *c,
const unsigned char *rho,
const unsigned char *inn, const unsigned char *inm) {
unsigned char buffer[HASH_BYTES + NPACKED_BYTES + MPACKED_BYTES];
memcpy(buffer, rho, HASH_BYTES);
memcpy(buffer + HASH_BYTES, inn, NPACKED_BYTES);
memcpy(buffer + HASH_BYTES + NPACKED_BYTES, inm, MPACKED_BYTES);
shake256(c, HASH_BYTES, buffer, HASH_BYTES + NPACKED_BYTES + MPACKED_BYTES);
}
/*
* Generates an MQDSS key pair.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_keypair(uint8_t *pk, uint8_t *sk) {
signed char F[F_LEN];
unsigned char skbuf[SEED_BYTES * 2];
gf31 sk_gf31[N];
gf31 pk_gf31[M];
// Expand sk to obtain a seed for F and the secret input s.
// We also expand to obtain a value for sampling r0, t0 and e0 during
// signature generation, but that is not relevant here.
randombytes(sk, SEED_BYTES);
shake256(skbuf, SEED_BYTES * 2, sk, SEED_BYTES);
memcpy(pk, skbuf, SEED_BYTES);
PQCLEAN_MQDSS48_AVX2_gf31_nrand_schar(F, F_LEN, pk, SEED_BYTES);
PQCLEAN_MQDSS48_AVX2_gf31_nrand(sk_gf31, N, skbuf + SEED_BYTES, SEED_BYTES);
PQCLEAN_MQDSS48_AVX2_MQ(pk_gf31, sk_gf31, F);
PQCLEAN_MQDSS48_AVX2_vgf31_unique(pk_gf31, pk_gf31);
PQCLEAN_MQDSS48_AVX2_gf31_npack(pk + SEED_BYTES, pk_gf31, M);
return 0;
}
/**
* Returns an array containing a detached signature.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_signature(
uint8_t *sig, size_t *siglen,
const uint8_t *m, size_t mlen, const uint8_t *sk) {
signed char F[F_LEN];
unsigned char skbuf[SEED_BYTES * 4];
gf31 pk_gf31[M];
unsigned char pk[SEED_BYTES + MPACKED_BYTES];
// Concatenated for convenient hashing.
unsigned char D_sigma0_h0_sigma1[HASH_BYTES * 3 + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES)];
unsigned char *D = D_sigma0_h0_sigma1;
unsigned char *sigma0 = D_sigma0_h0_sigma1 + HASH_BYTES;
unsigned char *h0 = D_sigma0_h0_sigma1 + 2 * HASH_BYTES;
unsigned char *t1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES;
unsigned char *e1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES + ROUNDS * NPACKED_BYTES;
shake256ctx shakestate;
unsigned char shakeblock[SHAKE256_RATE];
unsigned char h1[((ROUNDS + 7) & ~7) >> 3];
unsigned char rnd_seed[HASH_BYTES + SEED_BYTES];
unsigned char rho[2 * ROUNDS * HASH_BYTES];
unsigned char *rho0 = rho;
unsigned char *rho1 = rho + ROUNDS * HASH_BYTES;
gf31 sk_gf31[N];
gf31 rnd[(2 * N + M) * ROUNDS]; // Concatenated for easy RNG.
gf31 *r0 = rnd;
gf31 *t0 = rnd + N * ROUNDS;
gf31 *e0 = rnd + 2 * N * ROUNDS;
gf31 r1[N * ROUNDS];
gf31 t1[N * ROUNDS];
gf31 e1[M * ROUNDS];
gf31 gx[M * ROUNDS];
unsigned char packbuf0[NPACKED_BYTES];
unsigned char packbuf1[NPACKED_BYTES];
unsigned char packbuf2[MPACKED_BYTES];
unsigned char c[HASH_BYTES * ROUNDS * 2];
gf31 alpha;
int alpha_count = 0;
int b;
int i, j;
shake256incctx state;
shake256(skbuf, SEED_BYTES * 4, sk, SEED_BYTES);
PQCLEAN_MQDSS48_AVX2_gf31_nrand_schar(F, F_LEN, skbuf, SEED_BYTES);
shake256_inc_init(&state);
shake256_inc_absorb(&state, sk, SEED_BYTES);
shake256_inc_absorb(&state, m, mlen);
shake256_inc_finalize(&state);
shake256_inc_squeeze(sig, HASH_BYTES, &state); // Compute R.
shake256_inc_ctx_release(&state);
memcpy(pk, skbuf, SEED_BYTES);
PQCLEAN_MQDSS48_AVX2_gf31_nrand(sk_gf31, N, skbuf + SEED_BYTES, SEED_BYTES);
PQCLEAN_MQDSS48_AVX2_MQ(pk_gf31, sk_gf31, F);
PQCLEAN_MQDSS48_AVX2_vgf31_unique(pk_gf31, pk_gf31);
PQCLEAN_MQDSS48_AVX2_gf31_npack(pk + SEED_BYTES, pk_gf31, M);
shake256_inc_init(&state);
shake256_inc_absorb(&state, pk, PK_BYTES);
shake256_inc_absorb(&state, sig, HASH_BYTES);
shake256_inc_absorb(&state, m, mlen);
shake256_inc_finalize(&state);
shake256_inc_squeeze(D, HASH_BYTES, &state);
shake256_inc_ctx_release(&state);
sig += HASH_BYTES; // Compensate for prefixed R.
memcpy(rnd_seed, skbuf + 2 * SEED_BYTES, SEED_BYTES);
memcpy(rnd_seed + SEED_BYTES, D, HASH_BYTES);
shake256(rho, 2 * ROUNDS * HASH_BYTES, rnd_seed, SEED_BYTES + HASH_BYTES);
memcpy(rnd_seed, skbuf + 3 * SEED_BYTES, SEED_BYTES);
memcpy(rnd_seed + SEED_BYTES, D, HASH_BYTES);
PQCLEAN_MQDSS48_AVX2_gf31_nrand(rnd, (2 * N + M) * ROUNDS, rnd_seed, SEED_BYTES + HASH_BYTES);
for (i = 0; i < ROUNDS; i++) {
for (j = 0; j < N; j++) {
r1[j + i * N] = (gf31)(31 + sk_gf31[j] - r0[j + i * N]);
}
PQCLEAN_MQDSS48_AVX2_G(gx + i * M, t0 + i * N, r1 + i * N, F);
}
for (i = 0; i < ROUNDS * M; i++) {
gx[i] = (gf31)(gx[i] + e0[i]);
}
for (i = 0; i < ROUNDS; i++) {
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf0, r0 + i * N, N);
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf1, t0 + i * N, N);
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf2, e0 + i * M, M);
com_0(c + HASH_BYTES * (2 * i + 0), rho0 + i * HASH_BYTES, packbuf0, packbuf1, packbuf2);
PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(r1 + i * N, r1 + i * N);
PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(gx + i * M, gx + i * M);
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf0, r1 + i * N, N);
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf1, gx + i * M, M);
com_1(c + HASH_BYTES * (2 * i + 1), rho1 + i * HASH_BYTES, packbuf0, packbuf1);
}
H(sigma0, c, HASH_BYTES * ROUNDS * 2); // Compute sigma_0.
shake256_absorb(&shakestate, D_sigma0_h0_sigma1, 2 * HASH_BYTES);
shake256_squeezeblocks(shakeblock, 1, &shakestate);
memcpy(h0, shakeblock, HASH_BYTES);
memcpy(sig, sigma0, HASH_BYTES);
sig += HASH_BYTES; // Compensate for sigma_0.
for (i = 0; i < ROUNDS; i++) {
do {
alpha = shakeblock[alpha_count] & 31;
alpha_count++;
if (alpha_count == SHAKE256_RATE) {
alpha_count = 0;
shake256_squeezeblocks(shakeblock, 1, &shakestate);
}
} while (alpha == 31);
for (j = 0; j < N; j++) {
t1[i * N + j] = (gf31)(alpha * r0[j + i * N] - t0[j + i * N] + 31);
}
PQCLEAN_MQDSS48_AVX2_MQ(e1 + i * M, r0 + i * N, F);
for (j = 0; j < N; j++) {
e1[i * N + j] = (gf31)(alpha * e1[j + i * M] - e0[j + i * M] + 31);
}
PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(t1 + i * N, t1 + i * N);
PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(e1 + i * N, e1 + i * N);
}
shake256_ctx_release(&shakestate);
PQCLEAN_MQDSS48_AVX2_gf31_npack(t1packed, t1, N * ROUNDS);
PQCLEAN_MQDSS48_AVX2_gf31_npack(e1packed, e1, M * ROUNDS);
memcpy(sig, t1packed, NPACKED_BYTES * ROUNDS);
sig += NPACKED_BYTES * ROUNDS;
memcpy(sig, e1packed, MPACKED_BYTES * ROUNDS);
sig += MPACKED_BYTES * ROUNDS;
shake256(h1, ((ROUNDS + 7) & ~7) >> 3, D_sigma0_h0_sigma1, 3 * HASH_BYTES + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES));
for (i = 0; i < ROUNDS; i++) {
b = (h1[(i >> 3)] >> (i & 7)) & 1;
if (b == 0) {
PQCLEAN_MQDSS48_AVX2_gf31_npack(sig, r0 + i * N, N);
} else if (b == 1) {
PQCLEAN_MQDSS48_AVX2_gf31_npack(sig, r1 + i * N, N);
}
memcpy(sig + NPACKED_BYTES, c + HASH_BYTES * (2 * i + (1 - b)), HASH_BYTES);
memcpy(sig + NPACKED_BYTES + HASH_BYTES, rho + (i + b * ROUNDS) * HASH_BYTES, HASH_BYTES);
sig += NPACKED_BYTES + 2 * HASH_BYTES;
}
*siglen = SIG_LEN;
return 0;
}
/**
* Verifies a detached signature and message under a given public key.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_verify(
const uint8_t *sig, size_t siglen,
const uint8_t *m, size_t mlen, const uint8_t *pk) {
gf31 r[N];
gf31 t[N];
gf31 e[M];
signed char F[F_LEN];
gf31 pk_gf31[M];
// Concatenated for convenient hashing.
unsigned char D_sigma0_h0_sigma1[HASH_BYTES * 3 + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES)];
unsigned char *D = D_sigma0_h0_sigma1;
unsigned char *sigma0 = D_sigma0_h0_sigma1 + HASH_BYTES;
unsigned char *h0 = D_sigma0_h0_sigma1 + 2 * HASH_BYTES;
unsigned char *t1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES;
unsigned char *e1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES + ROUNDS * NPACKED_BYTES;
unsigned char h1[((ROUNDS + 7) & ~7) >> 3];
unsigned char c[HASH_BYTES * ROUNDS * 2];
memset(c, 0, HASH_BYTES * 2);
gf31 x[N];
gf31 y[M];
gf31 z[M];
unsigned char packbuf0[NPACKED_BYTES];
unsigned char packbuf1[MPACKED_BYTES];
shake256ctx shakestate;
unsigned char shakeblock[SHAKE256_RATE];
int i, j;
gf31 alpha;
int alpha_count = 0;
int b;
shake256incctx state;
if (siglen != SIG_LEN) {
return -1;
}
shake256_inc_init(&state);
shake256_inc_absorb(&state, pk, PK_BYTES);
shake256_inc_absorb(&state, sig, HASH_BYTES);
shake256_inc_absorb(&state, m, mlen);
shake256_inc_finalize(&state);
shake256_inc_squeeze(D, HASH_BYTES, &state);
shake256_inc_ctx_release(&state);
sig += HASH_BYTES;
PQCLEAN_MQDSS48_AVX2_gf31_nrand_schar(F, F_LEN, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_MQDSS48_AVX2_gf31_nunpack(pk_gf31, pk, M);
memcpy(sigma0, sig, HASH_BYTES);
shake256_absorb(&shakestate, D_sigma0_h0_sigma1, 2 * HASH_BYTES);
shake256_squeezeblocks(shakeblock, 1, &shakestate);
memcpy(h0, shakeblock, HASH_BYTES);
sig += HASH_BYTES;
memcpy(t1packed, sig, ROUNDS * NPACKED_BYTES);
sig += ROUNDS * NPACKED_BYTES;
memcpy(e1packed, sig, ROUNDS * MPACKED_BYTES);
sig += ROUNDS * MPACKED_BYTES;
shake256(h1, ((ROUNDS + 7) & ~7) >> 3, D_sigma0_h0_sigma1, 3 * HASH_BYTES + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES));
for (i = 0; i < ROUNDS; i++) {
do {
alpha = shakeblock[alpha_count] & 31;
alpha_count++;
if (alpha_count == SHAKE256_RATE) {
alpha_count = 0;
shake256_squeezeblocks(shakeblock, 1, &shakestate);
}
} while (alpha == 31);
b = (h1[(i >> 3)] >> (i & 7)) & 1;
PQCLEAN_MQDSS48_AVX2_gf31_nunpack(r, sig, N);
PQCLEAN_MQDSS48_AVX2_gf31_nunpack(t, t1packed + NPACKED_BYTES * i, N);
PQCLEAN_MQDSS48_AVX2_gf31_nunpack(e, e1packed + MPACKED_BYTES * i, M);
if (b == 0) {
PQCLEAN_MQDSS48_AVX2_MQ(y, r, F);
for (j = 0; j < N; j++) {
x[j] = (gf31)(alpha * r[j] - t[j] + 31);
}
for (j = 0; j < N; j++) {
y[j] = (gf31)(alpha * y[j] - e[j] + 31);
}
PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(x, x);
PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(y, y);
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf0, x, N);
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf1, y, M);
com_0(c + HASH_BYTES * (2 * i + 0), sig + HASH_BYTES + NPACKED_BYTES, sig, packbuf0, packbuf1);
} else {
PQCLEAN_MQDSS48_AVX2_MQ(y, r, F);
PQCLEAN_MQDSS48_AVX2_G(z, t, r, F);
for (j = 0; j < N; j++) {
y[j] = (gf31)(alpha * (31 + pk_gf31[j] - y[j]) - z[j] - e[j] + 62);
}
PQCLEAN_MQDSS48_AVX2_vgf31_shorten_unique(y, y);
PQCLEAN_MQDSS48_AVX2_gf31_npack(packbuf0, y, M);
com_1(c + HASH_BYTES * (2 * i + 1), sig + HASH_BYTES + NPACKED_BYTES, sig, packbuf0);
}
memcpy(c + HASH_BYTES * (2 * i + (1 - b)), sig + NPACKED_BYTES, HASH_BYTES);
sig += NPACKED_BYTES + 2 * HASH_BYTES;
}
shake256_ctx_release(&shakestate);
H(c, c, HASH_BYTES * ROUNDS * 2);
if (memcmp(c, sigma0, HASH_BYTES) != 0) {
return -1;
}
return 0;
}
/**
* Returns an array containing the signature followed by the message.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign(
uint8_t *sm, size_t *smlen,
const uint8_t *m, size_t mlen, const uint8_t *sk) {
size_t siglen;
PQCLEAN_MQDSS48_AVX2_crypto_sign_signature(
sm, &siglen, m, mlen, sk);
memmove(sm + SIG_LEN, m, mlen);
*smlen = siglen + mlen;
return 0;
}
/**
* Verifies a given signature-message pair under a given public key.
*/
int PQCLEAN_MQDSS48_AVX2_crypto_sign_open(
uint8_t *m, size_t *mlen,
const uint8_t *sm, size_t smlen, const uint8_t *pk) {
/* The API caller does not necessarily know what size a signature should be
but MQDSS signatures are always exactly SIG_LEN. */
if (smlen < SIG_LEN) {
memset(m, 0, smlen);
*mlen = 0;
return -1;
}
*mlen = smlen - SIG_LEN;
if (PQCLEAN_MQDSS48_AVX2_crypto_sign_verify(
sm, SIG_LEN, sm + SIG_LEN, *mlen, pk)) {
memset(m, 0, smlen);
*mlen = 0;
return -1;
}
/* If verification was successful, move the message to the right place. */
memmove(m, sm + SIG_LEN, *mlen);
return 0;
}

1
crypto_sign/mqdss-48/clean/sign.c
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@ -1,4 +1,3 @@
#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>

9
crypto_sign/mqdss-64/META.yml
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@ -16,3 +16,12 @@ auxiliary-submitters:
implementations:
- name: clean
version: https://github.com/joostrijneveld/MQDSS/commit/00608d7610262ff07b1834885d32bc3fd27ef5e1
- name: avx2
version: https://github.com/joostrijneveld/MQDSS/commit/00608d7610262ff07b1834885d32bc3fd27ef5e1
supported_platforms:
- architecture: x86_64
required_flags:
- avx2
- architecture: x86
required_flags:
- avx2

116
crypto_sign/mqdss-64/avx2/LICENSE Normal file
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@ -0,0 +1,116 @@
CC0 1.0 Universal
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22
crypto_sign/mqdss-64/avx2/Makefile Normal file
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@ -0,0 +1,22 @@
# This Makefile can be used with GNU Make or BSD Make
LIB=libmqdss-64_avx2.a
HEADERS = params.h gf31.h mq.h api.h
OBJECTS = gf31.o mq.o sign.o
CFLAGS=-O3 -Wall -Wconversion -Wextra -Wpedantic -Wvla -Werror \
-Wmissing-prototypes -Wredundant-decls -std=c99 -mavx2 \
-I../../../common $(EXTRAFLAGS)
all: $(LIB)
%.o: %.c $(HEADERS)
$(CC) $(CFLAGS) -c -o $@ $<
$(LIB): $(OBJECTS)
$(AR) -r $@ $(OBJECTS)
clean:
$(RM) $(OBJECTS)
$(RM) $(LIB)

19
crypto_sign/mqdss-64/avx2/Makefile.Microsoft_nmake Normal file
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@ -0,0 +1,19 @@
# This Makefile can be used with Microsoft Visual Studio's nmake using the command:
# nmake /f Makefile.Microsoft_nmake
LIBRARY=libmqdss-64_clean.lib
OBJECTS=gf31.obj mq.obj sign.obj
CFLAGS=/nologo /O2 /I ..\..\..\common /W4 /WX /arch:AVX2
all: $(LIBRARY)
# Make sure objects are recompiled if headers change.
$(OBJECTS): *.h
$(LIBRARY): $(OBJECTS)
LIB.EXE /NOLOGO /WX /OUT:$@ $**
clean:
-DEL $(OBJECTS)
-DEL $(LIBRARY)

47
crypto_sign/mqdss-64/avx2/api.h Normal file
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#ifndef PQCLEAN_MQDSS64_AVX2_API_H
#define PQCLEAN_MQDSS64_AVX2_API_H
#include <stddef.h>
#include <stdint.h>
#define PQCLEAN_MQDSS64_AVX2_CRYPTO_ALGNAME "MQDSS-64"
#define PQCLEAN_MQDSS64_AVX2_CRYPTO_SECRETKEYBYTES 24
#define PQCLEAN_MQDSS64_AVX2_CRYPTO_PUBLICKEYBYTES 64
#define PQCLEAN_MQDSS64_AVX2_CRYPTO_BYTES 59928
/*
* Generates an MQDSS key pair.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_keypair(
uint8_t *pk, uint8_t *sk);
/**
* Returns an array containing a detached signature.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_signature(
uint8_t *sig, size_t *siglen,
const uint8_t *m, size_t mlen, const uint8_t *sk);
/**
* Verifies a detached signature and message under a given public key.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_verify(
const uint8_t *sig, size_t siglen,
const uint8_t *m, size_t mlen, const uint8_t *pk);
/**
* Returns an array containing the signature followed by the message.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign(
uint8_t *sm, size_t *smlen,
const uint8_t *m, size_t mlen, const uint8_t *sk);
/**
* Verifies a given signature-message pair under a given public key.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_open(
uint8_t *m, size_t *mlen,
const uint8_t *sm, size_t smlen, const uint8_t *pk);
#endif

128
crypto_sign/mqdss-64/avx2/gf31.c Normal file
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@ -0,0 +1,128 @@
#include "params.h"
#include "fips202.h"
#include "gf31.h"
#include <assert.h>
#include <immintrin.h>
#include <stdint.h>
#include <string.h>
/* Given a vector of N elements in the range [0, 31], this reduces the elements
to the range [0, 30] by mapping 31 to 0 (i.e reduction mod 31) */
void PQCLEAN_MQDSS64_AVX2_vgf31_unique(gf31 *out, gf31 *in) {
__m256i x;
__m256i _w31 = _mm256_set1_epi16(31);
int i;
for (i = 0; i < (N >> 4); ++i) {
x = _mm256_loadu_si256((__m256i const *) (in + 16 * i));
x = _mm256_xor_si256(x, _mm256_and_si256(_w31, _mm256_cmpeq_epi16(x, _w31)));
_mm256_storeu_si256((__m256i *)(out + i * 16), x);
}
}
/* This function acts on vectors with 64 gf31 elements.
It performs one reduction step and guarantees output in [0, 30],
but requires input to be in [0, 32768). */
void PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(gf31 *out, gf31 *in) {
__m256i x;
__m256i _w2114 = _mm256_set1_epi32(2114 * 65536 + 2114);
__m256i _w31 = _mm256_set1_epi16(31);
int i;
for (i = 0; i < (N >> 4); ++i) {
x = _mm256_loadu_si256((__m256i const *) (in + 16 * i));
x = _mm256_sub_epi16(x, _mm256_mullo_epi16(_w31, _mm256_mulhi_epi16(x, _w2114)));
x = _mm256_xor_si256(x, _mm256_and_si256(_w31, _mm256_cmpeq_epi16(x, _w31)));
_mm256_storeu_si256((__m256i *)(out + i * 16), x);
}
}
/* Given a seed, samples len gf31 elements (in the range [0, 30]), and places
them in a vector of 16-bit elements */
void PQCLEAN_MQDSS64_AVX2_gf31_nrand(gf31 *out, size_t len, const uint8_t *seed, size_t seedlen) {
size_t i = 0, j;
shake256ctx shakestate;
uint8_t shakeblock[SHAKE256_RATE];
shake256_absorb(&shakestate, seed, seedlen);
while (i < len) {
shake256_squeezeblocks(shakeblock, 1, &shakestate);
for (j = 0; j < SHAKE256_RATE && i < len; j++) {
if ((shakeblock[j] & 31) != 31) {
out[i] = (shakeblock[j] & 31);
i++;
}
}
}
shake256_ctx_release(&shakestate);
}
/* Given a seed, samples len gf31 elements, transposed into unsigned range,
i.e. in the range [-15, 15], and places them in an array of 8-bit integers.
This is used for the expansion of F, which wants packed elements. */
void PQCLEAN_MQDSS64_AVX2_gf31_nrand_schar(signed char *out, size_t len, const uint8_t *seed, size_t seedlen) {
size_t i = 0, j;
shake256ctx shakestate;
uint8_t shakeblock[SHAKE256_RATE];
shake256_absorb(&shakestate, seed, seedlen);
while (i < len) {
shake256_squeezeblocks(shakeblock, 1, &shakestate);
for (j = 0; j < SHAKE256_RATE && i < len; j++) {
if ((shakeblock[j] & 31) != 31) {
out[i] = (signed char)((shakeblock[j] & 31) - 15);
i++;
}
}
}
shake256_ctx_release(&shakestate);
}
/* Unpacks an array of packed GF31 elements to one element per gf31.
Assumes that there is sufficient empty space available at the end of the
array to unpack. Can perform in-place. */
void PQCLEAN_MQDSS64_AVX2_gf31_nunpack(gf31 *out, const uint8_t *in, size_t n) {
size_t i;
size_t j = ((n * 5) >> 3) - 1;
unsigned int d = 0;
for (i = n; i > 0; i--) {
out[i - 1] = (gf31)((in[j] >> d) & 31);
d += 5;
if (d > 8) {
d -= 8;
j--;
out[i - 1] = (gf31)(out[i - 1] ^ ((in[j] << (5 - d)) & 31));
}
}
}
/* Packs an array of GF31 elements from gf31's to concatenated 5-bit values.
Assumes that there is sufficient space available to unpack.
Can perform in-place. */
void PQCLEAN_MQDSS64_AVX2_gf31_npack(uint8_t *out, const gf31 *in, size_t n) {
unsigned int i = 0;
unsigned int j;
int d = 3;
for (j = 0; j < n; j++) {
assert(in[j] < 31);
}
/* There will be ceil(5n / 8) output blocks */
memset(out, 0, (size_t)((5 * n + 7) & ~7U) >> 3);
for (j = 0; j < n; j++) {
if (d < 0) {
d += 8;
out[i] = (uint8_t)((out[i] & (255 << (d - 3))) |
((in[j] >> (8 - d)) & ~(255 << (d - 3))));
i++;
}
out[i] = (uint8_t)((out[i] & ~(31 << d)) | ((in[j] << d) & (31 << d)));
d -= 5;
}
}

36
crypto_sign/mqdss-64/avx2/gf31.h Normal file
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#ifndef MQDSS_GF31_H
#define MQDSS_GF31_H
#include <stddef.h>
#include <stdint.h>
typedef unsigned short gf31;
/* Given a vector of elements in the range [0, 31], this reduces the elements
to the range [0, 30] by mapping 31 to 0 (i.e reduction mod 31) */
void PQCLEAN_MQDSS64_AVX2_vgf31_unique(gf31 *out, gf31 *in);
/* Given a vector of 16-bit integers (i.e. in [0, 65535], this reduces the
elements to the range [0, 30] by mapping 31 to 0 (i.e reduction mod 31) */
void PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(gf31 *out, gf31 *in);
/* Given a seed, samples len gf31 elements (in the range [0, 30]), and places
them in a vector of 16-bit elements */
void PQCLEAN_MQDSS64_AVX2_gf31_nrand(gf31 *out, size_t len, const uint8_t *seed, size_t seedlen);
/* Given a seed, samples len gf31 elements, transposed into unsigned range,
i.e. in the range [-15, 15], and places them in an array of 8-bit integers.
This is used for the expansion of F, which wants packed elements. */
void PQCLEAN_MQDSS64_AVX2_gf31_nrand_schar(signed char *out, size_t len, const uint8_t *seed, size_t seedlen);
/* Unpacks an array of packed GF31 elements to one element per gf31.
Assumes that there is sufficient empty space available at the end of the
array to unpack. Can perform in-place. */
void PQCLEAN_MQDSS64_AVX2_gf31_nunpack(gf31 *out, const uint8_t *in, size_t n);
/* Packs an array of GF31 elements from gf31's to concatenated 5-bit values.
Assumes that there is sufficient space available to unpack.
Can perform in-place. */
void PQCLEAN_MQDSS64_AVX2_gf31_npack(uint8_t *out, const gf31 *in, size_t n);
#endif

239
crypto_sign/mqdss-64/avx2/mq.c Normal file
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@ -0,0 +1,239 @@
#include "mq.h"
#include "params.h"
#include <immintrin.h>
#include <stdio.h>
static inline __m256i reduce_16(__m256i r, __m256i _w31, __m256i _w2114) {
__m256i exp = _mm256_mulhi_epi16(r, _w2114);
return _mm256_sub_epi16(r, _mm256_mullo_epi16(_w31, exp));
}
/* Computes all products x_i * x_j, returns in reduced form */
inline static
void generate_quadratic_terms( unsigned char *xij, const gf31 *x ) {
__m256i mask_2114 = _mm256_set1_epi16( 2114 );
__m256i mask_31 = _mm256_set1_epi16( 31 );
__m256i xi[4];
xi[0] = _mm256_loadu_si256((__m256i const *) (x));
xi[1] = _mm256_loadu_si256((__m256i const *) (x + 16));
xi[2] = _mm256_loadu_si256((__m256i const *) (x + 32));
xi[3] = _mm256_loadu_si256((__m256i const *) (x + 48));
__m256i xixj[4];
xixj[0] = _mm256_setzero_si256();
xixj[1] = _mm256_setzero_si256();
xixj[2] = _mm256_setzero_si256();
xixj[3] = _mm256_setzero_si256();
int k = 0;
for (int i = 0; i < 32; i++) {
__m256i br_xi = _mm256_set1_epi16( (short)x[i] );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_mullo_epi16( xi[j], br_xi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r = _mm256_packs_epi16(xixj[0], xixj[1]);
r = _mm256_permute4x64_epi64(r, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r );
k += i + 1;
}
for (int i = 32; i < N; i++) {
__m256i br_xi = _mm256_set1_epi16( (short)x[i] );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_mullo_epi16( xi[j], br_xi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r0 = _mm256_packs_epi16(xixj[0], xixj[1]);
r0 = _mm256_permute4x64_epi64(r0, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r0 );
__m256i r1 = _mm256_packs_epi16(xixj[2], xixj[3]);
r1 = _mm256_permute4x64_epi64(r1, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + 32 + k ), r1 );
k += i + 1;
}
}
/* Computes all terms (x_i * y_j) + (x_j * y_i), returns in reduced form */
inline static
void generate_xiyj_p_xjyi_terms( unsigned char *xij, const gf31 *x, const gf31 *y ) {
__m256i mask_2114 = _mm256_set1_epi16( 2114 );
__m256i mask_31 = _mm256_set1_epi16( 31 );
__m256i xiyi[4];
xiyi[0] = _mm256_xor_si256(_mm256_loadu_si256((__m256i const *) (x)), _mm256_slli_si256( _mm256_loadu_si256((__m256i const *) (y)), 1 ));
xiyi[1] = _mm256_xor_si256(_mm256_loadu_si256((__m256i const *) (x + 16)), _mm256_slli_si256( _mm256_loadu_si256((__m256i const *) (y + 16)), 1 ));
xiyi[2] = _mm256_xor_si256(_mm256_loadu_si256((__m256i const *) (x + 32)), _mm256_slli_si256( _mm256_loadu_si256((__m256i const *) (y + 32)), 1 ));
xiyi[3] = _mm256_xor_si256(_mm256_loadu_si256((__m256i const *) (x + 48)), _mm256_slli_si256( _mm256_loadu_si256((__m256i const *) (y + 48)), 1 ));
__m256i xixj[4];
xixj[0] = _mm256_setzero_si256();
xixj[1] = _mm256_setzero_si256();
xixj[2] = _mm256_setzero_si256();
xixj[3] = _mm256_setzero_si256();
int k = 0;
for (int i = 0; i < 32; i++) {
__m256i br_yixi = _mm256_set1_epi16( (short)((x[i] << 8)^y[i]) );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_maddubs_epi16( xiyi[j], br_yixi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r = _mm256_packs_epi16(xixj[0], xixj[1]);
r = _mm256_permute4x64_epi64(r, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r );
k += i + 1;
}
for (int i = 32; i < N; i++) {
__m256i br_yixi = _mm256_set1_epi16( (short)((x[i] << 8)^y[i]) );
for (int j = 0; j <= (i >> 4); j++) {
xixj[j] = _mm256_maddubs_epi16( xiyi[j], br_yixi );
xixj[j] = reduce_16( xixj[j], mask_31, mask_2114 );
}
__m256i r0 = _mm256_packs_epi16(xixj[0], xixj[1]);
r0 = _mm256_permute4x64_epi64(r0, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + k ), r0 );
__m256i r1 = _mm256_packs_epi16(xixj[2], xixj[3]);
r1 = _mm256_permute4x64_epi64(r1, 0xd8); // 3,1,2,0
_mm256_storeu_si256( (__m256i *)( xij + 32 + k ), r1 );
k += i + 1;
}
}
#define EVAL_YMM_0(xx) {\
__m128i tmp = _mm256_castsi256_si128(xx); \
for (int macro_i = 0; macro_i < 8; macro_i++) { \
__m256i _xi = _mm256_broadcastw_epi16(tmp); \
tmp = _mm_srli_si128(tmp, 2); \
for (int macro_j = 0; macro_j < (N/16); macro_j++) { \
__m256i coeff = _mm256_loadu_si256((__m256i const *) F); \
F += 32; \
yy[macro_j] = _mm256_add_epi16(yy[macro_j], _mm256_maddubs_epi16(_xi, coeff)); \
} \
} \
}
#define EVAL_YMM_1(xx) {\
__m128i tmp = _mm256_extracti128_si256(xx, 1); \
for (int macro_i = 0; macro_i < 8; macro_i++) { \
__m256i _xi = _mm256_broadcastw_epi16(tmp); \
tmp = _mm_srli_si128(tmp, 2); \
for (int macro_j = 0; macro_j < (N/16); macro_j++) { \
__m256i coeff = _mm256_loadu_si256((__m256i const *) F); \
F += 32; \
yy[macro_j] = _mm256_add_epi16(yy[macro_j], _mm256_maddubs_epi16(_xi, coeff)); \
} \
} \
}
#define REDUCE_(yy) { \
(yy)[0] = reduce_16((yy)[0], mask_reduce, mask_2114); \
(yy)[1] = reduce_16((yy)[1], mask_reduce, mask_2114); \
(yy)[2] = reduce_16((yy)[2], mask_reduce, mask_2114); \
(yy)[3] = reduce_16((yy)[3], mask_reduce, mask_2114); \
}
/* Evaluates the MQ function on a vector of N gf31 elements x (expected to be
in reduced 5-bit representation). Expects the coefficients in F to be in
signed representation (i.e. [-15, 15], packed bytewise).
Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS64_AVX2_MQ(gf31 *fx, const gf31 *x, const signed char *F) {
__m256i mask_2114 = _mm256_set1_epi32(2114 * 65536 + 2114);
__m256i mask_reduce = _mm256_srli_epi16(_mm256_cmpeq_epi16(mask_2114, mask_2114), 11);
__m256i xi[4];
xi[0] = _mm256_loadu_si256((__m256i const *) (x));
xi[1] = _mm256_loadu_si256((__m256i const *) (x + 16));
xi[2] = _mm256_loadu_si256((__m256i const *) (x + 32));
xi[3] = _mm256_loadu_si256((__m256i const *) (x + 48));
__m256i _zero = _mm256_setzero_si256();
xi[0] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_zero, xi[0])), xi[0]);
xi[1] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_zero, xi[1])), xi[1]);
xi[2] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_zero, xi[2])), xi[2]);
xi[3] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_zero, xi[3])), xi[3]);
__m256i x1 = _mm256_packs_epi16(xi[0], xi[1]);
x1 = _mm256_permute4x64_epi64(x1, 0xd8); // 3,1,2,0
__m256i x2 = _mm256_packs_epi16(xi[2], xi[3]);
x2 = _mm256_permute4x64_epi64(x2, 0xd8); // 3,1,2,0
__m256i yy[M / 16];
yy[0] = _zero;
yy[1] = _zero;
yy[2] = _zero;
yy[3] = _zero;
EVAL_YMM_0(x1)
EVAL_YMM_1(x1)
EVAL_YMM_0(x2)
EVAL_YMM_1(x2)
REDUCE_(yy)
__m256i xixj[65];
generate_quadratic_terms( (unsigned char *) xixj, x );
for (int i = 0 ; i < 64 ; i += 2) {
EVAL_YMM_0(xixj[i])
EVAL_YMM_1(xixj[i])
EVAL_YMM_0(xixj[i + 1])
EVAL_YMM_1(xixj[i + 1])
REDUCE_(yy)
}
EVAL_YMM_0(xixj[64])
EVAL_YMM_1(xixj[64])
REDUCE_(yy)
yy[0] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[0])), yy[0]);
yy[1] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[1])), yy[1]);
yy[2] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[2])), yy[2]);
yy[3] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[3])), yy[3]);
for (int i = 0; i < (N / 16); ++i) {
_mm256_storeu_si256((__m256i *)(fx + i * 16), yy[i]);
}
}
/* Evaluates the bilinear polar form of the MQ function (i.e. G) on a vector of
N gf31 elements x (expected to be in reduced 5-bit representation). Expects
the coefficients in F to be in signed representation (i.e. [-15, 15], packed
bytewise). Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS64_AVX2_G(gf31 *fx, const gf31 *x, const gf31 *y, const signed char *F) {
__m256i mask_2114 = _mm256_set1_epi32(2114 * 65536 + 2114);
__m256i mask_reduce = _mm256_srli_epi16(_mm256_cmpeq_epi16(mask_2114, mask_2114), 11);
__m256i _zero = _mm256_setzero_si256();
__m256i yy[(M / 16)];
yy[0] = _zero;
yy[1] = _zero;
yy[2] = _zero;
yy[3] = _zero;
F += N * M;
__m256i xixj[65];
generate_xiyj_p_xjyi_terms( (unsigned char *) xixj, x, y );
for (int i = 0 ; i < 64 ; i += 2) {
EVAL_YMM_0(xixj[i])
EVAL_YMM_1(xixj[i])
EVAL_YMM_0(xixj[i + 1])
EVAL_YMM_1(xixj[i + 1])
REDUCE_(yy)
}
EVAL_YMM_0(xixj[64])
EVAL_YMM_1(xixj[64])
REDUCE_(yy)
yy[0] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[0])), yy[0]);
yy[1] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[1])), yy[1]);
yy[2] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[2])), yy[2]);
yy[3] = _mm256_add_epi16(_mm256_and_si256(mask_reduce, _mm256_cmpgt_epi16(_mm256_setzero_si256(), yy[3])), yy[3]);
for (int i = 0; i < (N / 16); ++i) {
_mm256_storeu_si256((__m256i *)(fx + i * 16), yy[i]);
}
}

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crypto_sign/mqdss-64/avx2/mq.h Normal file
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#ifndef MQDSS_MQ_H
#define MQDSS_MQ_H
#include "gf31.h"
/* Evaluates the MQ function on a vector of N gf31 elements x (expected to be
in reduced 5-bit representation). Expects the coefficients in F to be in
signed representation (i.e. [-15, 15], packed bytewise).
Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS64_AVX2_MQ(gf31 *fx, const gf31 *x, const signed char *F);
/* Evaluates the bilinear polar form of the MQ function (i.e. G) on a vector of
N gf31 elements x (expected to be in reduced 5-bit representation). Expects
the coefficients in F to be in signed representation (i.e. [-15, 15], packed
bytewise). Outputs M gf31 elements in unique 16-bit representation as fx. */
void PQCLEAN_MQDSS64_AVX2_G(gf31 *fx, const gf31 *x, const gf31 *y, const signed char *F);
#endif

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#ifndef MQDSS_PARAMS_H
#define MQDSS_PARAMS_H
#define N 64
#define M N
#define F_LEN (M * (((N * (N + 1)) >> 1) + N)) /* Number of elements in F */
#define ROUNDS 277
/* Number of bytes that N, M and F_LEN elements require when packed into a byte
array, 5-bit elements packed continuously. */
/* Assumes N and M to be multiples of 8 */
#define NPACKED_BYTES ((N * 5) >> 3)
#define MPACKED_BYTES ((M * 5) >> 3)
#define FPACKED_BYTES ((F_LEN * 5) >> 3)
#define HASH_BYTES 48
#define SEED_BYTES 24
#define PK_BYTES (SEED_BYTES + MPACKED_BYTES)
#define SK_BYTES SEED_BYTES
// R, sigma_0, ROUNDS * (t1, r{0,1}, e1, c, rho)
#define SIG_LEN (2 * HASH_BYTES + ROUNDS * (2*NPACKED_BYTES + MPACKED_BYTES + HASH_BYTES + HASH_BYTES))
#endif

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#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "api.h"
#include "fips202.h"
#include "gf31.h"
#include "mq.h"
#include "params.h"
#include "randombytes.h"
/* Takes an array of len bytes and computes a hash digest.
This is used as a hash function in the Fiat-Shamir transform. */
static void H(unsigned char *out, const unsigned char *in, const size_t len) {
shake256(out, HASH_BYTES, in, len);
}
/* Takes two arrays of N packed elements and an array of M packed elements,
and computes a HASH_BYTES commitment. */
static void com_0(unsigned char *c,
const unsigned char *rho,
const unsigned char *inn, const unsigned char *inn2,
const unsigned char *inm) {
unsigned char buffer[HASH_BYTES + 2 * NPACKED_BYTES + MPACKED_BYTES];
memcpy(buffer, rho, HASH_BYTES);
memcpy(buffer + HASH_BYTES, inn, NPACKED_BYTES);
memcpy(buffer + HASH_BYTES + NPACKED_BYTES, inn2, NPACKED_BYTES);
memcpy(buffer + HASH_BYTES + 2 * NPACKED_BYTES, inm, MPACKED_BYTES);
shake256(c, HASH_BYTES, buffer, HASH_BYTES + 2 * NPACKED_BYTES + MPACKED_BYTES);
}
/* Takes an array of N packed elements and an array of M packed elements,
and computes a HASH_BYTES commitment. */
static void com_1(unsigned char *c,
const unsigned char *rho,
const unsigned char *inn, const unsigned char *inm) {
unsigned char buffer[HASH_BYTES + NPACKED_BYTES + MPACKED_BYTES];
memcpy(buffer, rho, HASH_BYTES);
memcpy(buffer + HASH_BYTES, inn, NPACKED_BYTES);
memcpy(buffer + HASH_BYTES + NPACKED_BYTES, inm, MPACKED_BYTES);
shake256(c, HASH_BYTES, buffer, HASH_BYTES + NPACKED_BYTES + MPACKED_BYTES);
}
/*
* Generates an MQDSS key pair.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_keypair(uint8_t *pk, uint8_t *sk) {
signed char F[F_LEN];
unsigned char skbuf[SEED_BYTES * 2];
gf31 sk_gf31[N];
gf31 pk_gf31[M];
// Expand sk to obtain a seed for F and the secret input s.
// We also expand to obtain a value for sampling r0, t0 and e0 during
// signature generation, but that is not relevant here.
randombytes(sk, SEED_BYTES);
shake256(skbuf, SEED_BYTES * 2, sk, SEED_BYTES);
memcpy(pk, skbuf, SEED_BYTES);
PQCLEAN_MQDSS64_AVX2_gf31_nrand_schar(F, F_LEN, pk, SEED_BYTES);
PQCLEAN_MQDSS64_AVX2_gf31_nrand(sk_gf31, N, skbuf + SEED_BYTES, SEED_BYTES);
PQCLEAN_MQDSS64_AVX2_MQ(pk_gf31, sk_gf31, F);
PQCLEAN_MQDSS64_AVX2_vgf31_unique(pk_gf31, pk_gf31);
PQCLEAN_MQDSS64_AVX2_gf31_npack(pk + SEED_BYTES, pk_gf31, M);
return 0;
}
/**
* Returns an array containing a detached signature.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_signature(
uint8_t *sig, size_t *siglen,
const uint8_t *m, size_t mlen, const uint8_t *sk) {
signed char F[F_LEN];
unsigned char skbuf[SEED_BYTES * 4];
gf31 pk_gf31[M];
unsigned char pk[SEED_BYTES + MPACKED_BYTES];
// Concatenated for convenient hashing.
unsigned char D_sigma0_h0_sigma1[HASH_BYTES * 3 + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES)];
unsigned char *D = D_sigma0_h0_sigma1;
unsigned char *sigma0 = D_sigma0_h0_sigma1 + HASH_BYTES;
unsigned char *h0 = D_sigma0_h0_sigma1 + 2 * HASH_BYTES;
unsigned char *t1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES;
unsigned char *e1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES + ROUNDS * NPACKED_BYTES;
shake256ctx shakestate;
unsigned char shakeblock[SHAKE256_RATE];
unsigned char h1[((ROUNDS + 7) & ~7) >> 3];
unsigned char rnd_seed[HASH_BYTES + SEED_BYTES];
unsigned char rho[2 * ROUNDS * HASH_BYTES];
unsigned char *rho0 = rho;
unsigned char *rho1 = rho + ROUNDS * HASH_BYTES;
gf31 sk_gf31[N];
gf31 rnd[(2 * N + M) * ROUNDS]; // Concatenated for easy RNG.
gf31 *r0 = rnd;
gf31 *t0 = rnd + N * ROUNDS;
gf31 *e0 = rnd + 2 * N * ROUNDS;
gf31 r1[N * ROUNDS];
gf31 t1[N * ROUNDS];
gf31 e1[M * ROUNDS];
gf31 gx[M * ROUNDS];
unsigned char packbuf0[NPACKED_BYTES];
unsigned char packbuf1[NPACKED_BYTES];
unsigned char packbuf2[MPACKED_BYTES];
unsigned char c[HASH_BYTES * ROUNDS * 2];
gf31 alpha;
int alpha_count = 0;
int b;
int i, j;
shake256incctx state;
shake256(skbuf, SEED_BYTES * 4, sk, SEED_BYTES);
PQCLEAN_MQDSS64_AVX2_gf31_nrand_schar(F, F_LEN, skbuf, SEED_BYTES);
shake256_inc_init(&state);
shake256_inc_absorb(&state, sk, SEED_BYTES);
shake256_inc_absorb(&state, m, mlen);
shake256_inc_finalize(&state);
shake256_inc_squeeze(sig, HASH_BYTES, &state); // Compute R.
shake256_inc_ctx_release(&state);
memcpy(pk, skbuf, SEED_BYTES);
PQCLEAN_MQDSS64_AVX2_gf31_nrand(sk_gf31, N, skbuf + SEED_BYTES, SEED_BYTES);
PQCLEAN_MQDSS64_AVX2_MQ(pk_gf31, sk_gf31, F);
PQCLEAN_MQDSS64_AVX2_vgf31_unique(pk_gf31, pk_gf31);
PQCLEAN_MQDSS64_AVX2_gf31_npack(pk + SEED_BYTES, pk_gf31, M);
shake256_inc_init(&state);
shake256_inc_absorb(&state, pk, PK_BYTES);
shake256_inc_absorb(&state, sig, HASH_BYTES);
shake256_inc_absorb(&state, m, mlen);
shake256_inc_finalize(&state);
shake256_inc_squeeze(D, HASH_BYTES, &state);
shake256_inc_ctx_release(&state);
sig += HASH_BYTES; // Compensate for prefixed R.
memcpy(rnd_seed, skbuf + 2 * SEED_BYTES, SEED_BYTES);
memcpy(rnd_seed + SEED_BYTES, D, HASH_BYTES);
shake256(rho, 2 * ROUNDS * HASH_BYTES, rnd_seed, SEED_BYTES + HASH_BYTES);
memcpy(rnd_seed, skbuf + 3 * SEED_BYTES, SEED_BYTES);
memcpy(rnd_seed + SEED_BYTES, D, HASH_BYTES);
PQCLEAN_MQDSS64_AVX2_gf31_nrand(rnd, (2 * N + M) * ROUNDS, rnd_seed, SEED_BYTES + HASH_BYTES);
for (i = 0; i < ROUNDS; i++) {
for (j = 0; j < N; j++) {
r1[j + i * N] = (gf31)(31 + sk_gf31[j] - r0[j + i * N]);
}
PQCLEAN_MQDSS64_AVX2_G(gx + i * M, t0 + i * N, r1 + i * N, F);
}
for (i = 0; i < ROUNDS * M; i++) {
gx[i] = (gf31)(gx[i] + e0[i]);
}
for (i = 0; i < ROUNDS; i++) {
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf0, r0 + i * N, N);
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf1, t0 + i * N, N);
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf2, e0 + i * M, M);
com_0(c + HASH_BYTES * (2 * i + 0), rho0 + i * HASH_BYTES, packbuf0, packbuf1, packbuf2);
PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(r1 + i * N, r1 + i * N);
PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(gx + i * M, gx + i * M);
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf0, r1 + i * N, N);
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf1, gx + i * M, M);
com_1(c + HASH_BYTES * (2 * i + 1), rho1 + i * HASH_BYTES, packbuf0, packbuf1);
}
H(sigma0, c, HASH_BYTES * ROUNDS * 2); // Compute sigma_0.
shake256_absorb(&shakestate, D_sigma0_h0_sigma1, 2 * HASH_BYTES);
shake256_squeezeblocks(shakeblock, 1, &shakestate);
memcpy(h0, shakeblock, HASH_BYTES);
memcpy(sig, sigma0, HASH_BYTES);
sig += HASH_BYTES; // Compensate for sigma_0.
for (i = 0; i < ROUNDS; i++) {
do {
alpha = shakeblock[alpha_count] & 31;
alpha_count++;
if (alpha_count == SHAKE256_RATE) {
alpha_count = 0;
shake256_squeezeblocks(shakeblock, 1, &shakestate);
}
} while (alpha == 31);
for (j = 0; j < N; j++) {
t1[i * N + j] = (gf31)(alpha * r0[j + i * N] - t0[j + i * N] + 31);
}
PQCLEAN_MQDSS64_AVX2_MQ(e1 + i * M, r0 + i * N, F);
for (j = 0; j < N; j++) {
e1[i * N + j] = (gf31)(alpha * e1[j + i * M] - e0[j + i * M] + 31);
}
PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(t1 + i * N, t1 + i * N);
PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(e1 + i * N, e1 + i * N);
}
shake256_ctx_release(&shakestate);
PQCLEAN_MQDSS64_AVX2_gf31_npack(t1packed, t1, N * ROUNDS);
PQCLEAN_MQDSS64_AVX2_gf31_npack(e1packed, e1, M * ROUNDS);
memcpy(sig, t1packed, NPACKED_BYTES * ROUNDS);
sig += NPACKED_BYTES * ROUNDS;
memcpy(sig, e1packed, MPACKED_BYTES * ROUNDS);
sig += MPACKED_BYTES * ROUNDS;
shake256(h1, ((ROUNDS + 7) & ~7) >> 3, D_sigma0_h0_sigma1, 3 * HASH_BYTES + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES));
for (i = 0; i < ROUNDS; i++) {
b = (h1[(i >> 3)] >> (i & 7)) & 1;
if (b == 0) {
PQCLEAN_MQDSS64_AVX2_gf31_npack(sig, r0 + i * N, N);
} else if (b == 1) {
PQCLEAN_MQDSS64_AVX2_gf31_npack(sig, r1 + i * N, N);
}
memcpy(sig + NPACKED_BYTES, c + HASH_BYTES * (2 * i + (1 - b)), HASH_BYTES);
memcpy(sig + NPACKED_BYTES + HASH_BYTES, rho + (i + b * ROUNDS) * HASH_BYTES, HASH_BYTES);
sig += NPACKED_BYTES + 2 * HASH_BYTES;
}
*siglen = SIG_LEN;
return 0;
}
/**
* Verifies a detached signature and message under a given public key.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_verify(
const uint8_t *sig, size_t siglen,
const uint8_t *m, size_t mlen, const uint8_t *pk) {
gf31 r[N];
gf31 t[N];
gf31 e[M];
signed char F[F_LEN];
gf31 pk_gf31[M];
// Concatenated for convenient hashing.
unsigned char D_sigma0_h0_sigma1[HASH_BYTES * 3 + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES)];
unsigned char *D = D_sigma0_h0_sigma1;
unsigned char *sigma0 = D_sigma0_h0_sigma1 + HASH_BYTES;
unsigned char *h0 = D_sigma0_h0_sigma1 + 2 * HASH_BYTES;
unsigned char *t1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES;
unsigned char *e1packed = D_sigma0_h0_sigma1 + 3 * HASH_BYTES + ROUNDS * NPACKED_BYTES;
unsigned char h1[((ROUNDS + 7) & ~7) >> 3];
unsigned char c[HASH_BYTES * ROUNDS * 2];
memset(c, 0, HASH_BYTES * 2);
gf31 x[N];
gf31 y[M];
gf31 z[M];
unsigned char packbuf0[NPACKED_BYTES];
unsigned char packbuf1[MPACKED_BYTES];
shake256ctx shakestate;
unsigned char shakeblock[SHAKE256_RATE];
int i, j;
gf31 alpha;
int alpha_count = 0;
int b;
shake256incctx state;
if (siglen != SIG_LEN) {
return -1;
}
shake256_inc_init(&state);
shake256_inc_absorb(&state, pk, PK_BYTES);
shake256_inc_absorb(&state, sig, HASH_BYTES);
shake256_inc_absorb(&state, m, mlen);
shake256_inc_finalize(&state);
shake256_inc_squeeze(D, HASH_BYTES, &state);
shake256_inc_ctx_release(&state);
sig += HASH_BYTES;
PQCLEAN_MQDSS64_AVX2_gf31_nrand_schar(F, F_LEN, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_MQDSS64_AVX2_gf31_nunpack(pk_gf31, pk, M);
memcpy(sigma0, sig, HASH_BYTES);
shake256_absorb(&shakestate, D_sigma0_h0_sigma1, 2 * HASH_BYTES);
shake256_squeezeblocks(shakeblock, 1, &shakestate);
memcpy(h0, shakeblock, HASH_BYTES);
sig += HASH_BYTES;
memcpy(t1packed, sig, ROUNDS * NPACKED_BYTES);
sig += ROUNDS * NPACKED_BYTES;
memcpy(e1packed, sig, ROUNDS * MPACKED_BYTES);
sig += ROUNDS * MPACKED_BYTES;
shake256(h1, ((ROUNDS + 7) & ~7) >> 3, D_sigma0_h0_sigma1, 3 * HASH_BYTES + ROUNDS * (NPACKED_BYTES + MPACKED_BYTES));
for (i = 0; i < ROUNDS; i++) {
do {
alpha = shakeblock[alpha_count] & 31;
alpha_count++;
if (alpha_count == SHAKE256_RATE) {
alpha_count = 0;
shake256_squeezeblocks(shakeblock, 1, &shakestate);
}
} while (alpha == 31);
b = (h1[(i >> 3)] >> (i & 7)) & 1;
PQCLEAN_MQDSS64_AVX2_gf31_nunpack(r, sig, N);
PQCLEAN_MQDSS64_AVX2_gf31_nunpack(t, t1packed + NPACKED_BYTES * i, N);
PQCLEAN_MQDSS64_AVX2_gf31_nunpack(e, e1packed + MPACKED_BYTES * i, M);
if (b == 0) {
PQCLEAN_MQDSS64_AVX2_MQ(y, r, F);
for (j = 0; j < N; j++) {
x[j] = (gf31)(alpha * r[j] - t[j] + 31);
}
for (j = 0; j < N; j++) {
y[j] = (gf31)(alpha * y[j] - e[j] + 31);
}
PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(x, x);
PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(y, y);
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf0, x, N);
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf1, y, M);
com_0(c + HASH_BYTES * (2 * i + 0), sig + HASH_BYTES + NPACKED_BYTES, sig, packbuf0, packbuf1);
} else {
PQCLEAN_MQDSS64_AVX2_MQ(y, r, F);
PQCLEAN_MQDSS64_AVX2_G(z, t, r, F);
for (j = 0; j < N; j++) {
y[j] = (gf31)(alpha * (31 + pk_gf31[j] - y[j]) - z[j] - e[j] + 62);
}
PQCLEAN_MQDSS64_AVX2_vgf31_shorten_unique(y, y);
PQCLEAN_MQDSS64_AVX2_gf31_npack(packbuf0, y, M);
com_1(c + HASH_BYTES * (2 * i + 1), sig + HASH_BYTES + NPACKED_BYTES, sig, packbuf0);
}
memcpy(c + HASH_BYTES * (2 * i + (1 - b)), sig + NPACKED_BYTES, HASH_BYTES);
sig += NPACKED_BYTES + 2 * HASH_BYTES;
}
shake256_ctx_release(&shakestate);
H(c, c, HASH_BYTES * ROUNDS * 2);
if (memcmp(c, sigma0, HASH_BYTES) != 0) {
return -1;
}
return 0;
}
/**
* Returns an array containing the signature followed by the message.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign(
uint8_t *sm, size_t *smlen,
const uint8_t *m, size_t mlen, const uint8_t *sk) {
size_t siglen;
PQCLEAN_MQDSS64_AVX2_crypto_sign_signature(
sm, &siglen, m, mlen, sk);
memmove(sm + SIG_LEN, m, mlen);
*smlen = siglen + mlen;
return 0;
}
/**
* Verifies a given signature-message pair under a given public key.
*/
int PQCLEAN_MQDSS64_AVX2_crypto_sign_open(
uint8_t *m, size_t *mlen,
const uint8_t *sm, size_t smlen, const uint8_t *pk) {
/* The API caller does not necessarily know what size a signature should be
but MQDSS signatures are always exactly SIG_LEN. */
if (smlen < SIG_LEN) {
memset(m, 0, smlen);
*mlen = 0;
return -1;
}
*mlen = smlen - SIG_LEN;
if (PQCLEAN_MQDSS64_AVX2_crypto_sign_verify(
sm, SIG_LEN, sm + SIG_LEN, *mlen, pk)) {
memset(m, 0, smlen);
*mlen = 0;
return -1;
}
/* If verification was successful, move the message to the right place. */
memmove(m, sm + SIG_LEN, *mlen);
return 0;
}

1
crypto_sign/mqdss-64/clean/sign.c
View File

@ -1,4 +1,3 @@
#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>

20
test/duplicate_consistency/mqdss-48_clean.yml Normal file
View File

@ -0,0 +1,20 @@
consistency_checks:
- source:
scheme: mqdss-48
implementation: avx2
files:
- api.h
- mq.h
- LICENSE
- mq.h
- sign.c
- params.h
- source:
scheme: mqdss-64
implementation: clean
files:
- gf31.c
- gf31.h
- LICENSE
- mq.c
- mq.h

11
test/duplicate_consistency/mqdss-64_clean.yml
View File

@ -9,3 +9,14 @@ consistency_checks:
- mq.c
- mq.h
- sign.c
- source:
scheme: mqdss-64
implementation: avx2
files:
- api.h
- mq.h
- LICENSE
- mq.h
- sign.c
- params.h

1
test/test_testvectors.py
View File

@ -40,6 +40,7 @@ def test_testvectors(implementation, impl_path, test_dir, init, destr):
implementation.name,
'.exe' if os.name == 'nt' else ''
))],
print_output=False,
).replace('\r', '')
assert(implementation.scheme.metadata()['testvectors-sha256'].lower()
== hashlib.sha256(out.encode('utf-8')).hexdigest().lower())