mirror of
https://github.com/henrydcase/pqc.git
synced 2024-11-22 23:48:58 +00:00
388 lines
11 KiB
C
388 lines
11 KiB
C
/* Based on the public domain implementation in
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* crypto_hash/sha512/ref/ from http://bench.cr.yp.to/supercop.html
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* by D. J. Bernstein */
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#include "sha2.h"
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typedef unsigned long long uint64;
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static uint64 load_bigendian(const unsigned char *x) {
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return (uint64)(x[7]) | (((uint64)(x[6])) << 8) | (((uint64)(x[5])) << 16) |
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(((uint64)(x[4])) << 24) | (((uint64)(x[3])) << 32) |
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(((uint64)(x[2])) << 40) | (((uint64)(x[1])) << 48) |
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(((uint64)(x[0])) << 56);
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}
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static void store_bigendian(unsigned char *x, uint64 u) {
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x[7] = u;
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u >>= 8;
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x[6] = u;
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u >>= 8;
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x[5] = u;
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u >>= 8;
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x[4] = u;
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u >>= 8;
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x[3] = u;
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u >>= 8;
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x[2] = u;
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u >>= 8;
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x[1] = u;
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u >>= 8;
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x[0] = u;
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}
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#define SHR(x, c) ((x) >> (c))
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#define ROTR(x, c) (((x) >> (c)) | ((x) << (64 - (c))))
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#define Ch(x, y, z) (((x) & (y)) ^ (~(x) & (z)))
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#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
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#define Sigma0(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39))
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#define Sigma1(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41))
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#define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7))
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#define sigma1(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHR(x, 6))
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#define M(w0, w14, w9, w1) w0 = sigma1(w14) + (w9) + sigma0(w1) + (w0);
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#define EXPAND \
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M(w0, w14, w9, w1) \
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M(w1, w15, w10, w2) \
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M(w2, w0, w11, w3) \
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M(w3, w1, w12, w4) \
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M(w4, w2, w13, w5) \
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M(w5, w3, w14, w6) \
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M(w6, w4, w15, w7) \
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M(w7, w5, w0, w8) \
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M(w8, w6, w1, w9) \
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M(w9, w7, w2, w10) \
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M(w10, w8, w3, w11) \
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M(w11, w9, w4, w12) \
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M(w12, w10, w5, w13) \
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M(w13, w11, w6, w14) \
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M(w14, w12, w7, w15) \
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M(w15, w13, w8, w0)
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#define F(w, k) \
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T1 = h + Sigma1(e) + Ch(e, f, g) + (k) + (w); \
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T2 = Sigma0(a) + Maj(a, b, c); \
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h = g; \
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g = f; \
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f = e; \
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e = d + T1; \
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d = c; \
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c = b; \
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b = a; \
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a = T1 + T2;
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static int crypto_hashblocks_sha512(unsigned char *statebytes,
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const unsigned char *in,
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unsigned long long inlen) {
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uint64 state[8];
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uint64 a;
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uint64 b;
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uint64 c;
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uint64 d;
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uint64 e;
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uint64 f;
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uint64 g;
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uint64 h;
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uint64 T1;
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uint64 T2;
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a = load_bigendian(statebytes + 0);
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state[0] = a;
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b = load_bigendian(statebytes + 8);
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state[1] = b;
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c = load_bigendian(statebytes + 16);
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state[2] = c;
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d = load_bigendian(statebytes + 24);
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state[3] = d;
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e = load_bigendian(statebytes + 32);
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state[4] = e;
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f = load_bigendian(statebytes + 40);
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state[5] = f;
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g = load_bigendian(statebytes + 48);
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state[6] = g;
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h = load_bigendian(statebytes + 56);
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state[7] = h;
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while (inlen >= 128) {
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uint64 w0 = load_bigendian(in + 0);
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uint64 w1 = load_bigendian(in + 8);
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uint64 w2 = load_bigendian(in + 16);
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uint64 w3 = load_bigendian(in + 24);
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uint64 w4 = load_bigendian(in + 32);
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uint64 w5 = load_bigendian(in + 40);
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uint64 w6 = load_bigendian(in + 48);
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uint64 w7 = load_bigendian(in + 56);
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uint64 w8 = load_bigendian(in + 64);
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uint64 w9 = load_bigendian(in + 72);
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uint64 w10 = load_bigendian(in + 80);
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uint64 w11 = load_bigendian(in + 88);
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uint64 w12 = load_bigendian(in + 96);
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uint64 w13 = load_bigendian(in + 104);
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uint64 w14 = load_bigendian(in + 112);
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uint64 w15 = load_bigendian(in + 120);
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F(w0, 0x428a2f98d728ae22ULL)
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F(w1, 0x7137449123ef65cdULL)
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F(w2, 0xb5c0fbcfec4d3b2fULL)
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F(w3, 0xe9b5dba58189dbbcULL)
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F(w4, 0x3956c25bf348b538ULL)
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F(w5, 0x59f111f1b605d019ULL)
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F(w6, 0x923f82a4af194f9bULL)
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F(w7, 0xab1c5ed5da6d8118ULL)
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F(w8, 0xd807aa98a3030242ULL)
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F(w9, 0x12835b0145706fbeULL)
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F(w10, 0x243185be4ee4b28cULL)
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F(w11, 0x550c7dc3d5ffb4e2ULL)
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F(w12, 0x72be5d74f27b896fULL)
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F(w13, 0x80deb1fe3b1696b1ULL)
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F(w14, 0x9bdc06a725c71235ULL)
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F(w15, 0xc19bf174cf692694ULL)
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EXPAND
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F(w0, 0xe49b69c19ef14ad2ULL)
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F(w1, 0xefbe4786384f25e3ULL)
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F(w2, 0x0fc19dc68b8cd5b5ULL)
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F(w3, 0x240ca1cc77ac9c65ULL)
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F(w4, 0x2de92c6f592b0275ULL)
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F(w5, 0x4a7484aa6ea6e483ULL)
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F(w6, 0x5cb0a9dcbd41fbd4ULL)
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F(w7, 0x76f988da831153b5ULL)
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F(w8, 0x983e5152ee66dfabULL)
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F(w9, 0xa831c66d2db43210ULL)
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F(w10, 0xb00327c898fb213fULL)
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F(w11, 0xbf597fc7beef0ee4ULL)
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F(w12, 0xc6e00bf33da88fc2ULL)
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F(w13, 0xd5a79147930aa725ULL)
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F(w14, 0x06ca6351e003826fULL)
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F(w15, 0x142929670a0e6e70ULL)
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EXPAND
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F(w0, 0x27b70a8546d22ffcULL)
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F(w1, 0x2e1b21385c26c926ULL)
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F(w2, 0x4d2c6dfc5ac42aedULL)
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F(w3, 0x53380d139d95b3dfULL)
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F(w4, 0x650a73548baf63deULL)
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F(w5, 0x766a0abb3c77b2a8ULL)
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F(w6, 0x81c2c92e47edaee6ULL)
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F(w7, 0x92722c851482353bULL)
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F(w8, 0xa2bfe8a14cf10364ULL)
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F(w9, 0xa81a664bbc423001ULL)
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F(w10, 0xc24b8b70d0f89791ULL)
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F(w11, 0xc76c51a30654be30ULL)
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F(w12, 0xd192e819d6ef5218ULL)
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F(w13, 0xd69906245565a910ULL)
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F(w14, 0xf40e35855771202aULL)
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F(w15, 0x106aa07032bbd1b8ULL)
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EXPAND
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F(w0, 0x19a4c116b8d2d0c8ULL)
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F(w1, 0x1e376c085141ab53ULL)
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F(w2, 0x2748774cdf8eeb99ULL)
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F(w3, 0x34b0bcb5e19b48a8ULL)
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F(w4, 0x391c0cb3c5c95a63ULL)
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F(w5, 0x4ed8aa4ae3418acbULL)
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F(w6, 0x5b9cca4f7763e373ULL)
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F(w7, 0x682e6ff3d6b2b8a3ULL)
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F(w8, 0x748f82ee5defb2fcULL)
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F(w9, 0x78a5636f43172f60ULL)
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F(w10, 0x84c87814a1f0ab72ULL)
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F(w11, 0x8cc702081a6439ecULL)
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F(w12, 0x90befffa23631e28ULL)
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F(w13, 0xa4506cebde82bde9ULL)
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F(w14, 0xbef9a3f7b2c67915ULL)
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F(w15, 0xc67178f2e372532bULL)
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EXPAND
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F(w0, 0xca273eceea26619cULL)
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F(w1, 0xd186b8c721c0c207ULL)
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F(w2, 0xeada7dd6cde0eb1eULL)
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F(w3, 0xf57d4f7fee6ed178ULL)
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F(w4, 0x06f067aa72176fbaULL)
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F(w5, 0x0a637dc5a2c898a6ULL)
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F(w6, 0x113f9804bef90daeULL)
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F(w7, 0x1b710b35131c471bULL)
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F(w8, 0x28db77f523047d84ULL)
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F(w9, 0x32caab7b40c72493ULL)
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F(w10, 0x3c9ebe0a15c9bebcULL)
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F(w11, 0x431d67c49c100d4cULL)
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F(w12, 0x4cc5d4becb3e42b6ULL)
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F(w13, 0x597f299cfc657e2aULL)
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F(w14, 0x5fcb6fab3ad6faecULL)
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F(w15, 0x6c44198c4a475817ULL)
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a += state[0];
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b += state[1];
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c += state[2];
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d += state[3];
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e += state[4];
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f += state[5];
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g += state[6];
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h += state[7];
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state[0] = a;
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state[1] = b;
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state[2] = c;
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state[3] = d;
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state[4] = e;
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state[5] = f;
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state[6] = g;
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state[7] = h;
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in += 128;
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inlen -= 128;
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}
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store_bigendian(statebytes + 0, state[0]);
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store_bigendian(statebytes + 8, state[1]);
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store_bigendian(statebytes + 16, state[2]);
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store_bigendian(statebytes + 24, state[3]);
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store_bigendian(statebytes + 32, state[4]);
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store_bigendian(statebytes + 40, state[5]);
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store_bigendian(statebytes + 48, state[6]);
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store_bigendian(statebytes + 56, state[7]);
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return inlen;
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}
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#define blocks crypto_hashblocks_sha512
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static const unsigned char iv_384[64] = {
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0xcb, 0xbb, 0x9d, 0x5d, 0xc1, 0x05, 0x9e, 0xd8, 0x62, 0x9a, 0x29,
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0x2a, 0x36, 0x7c, 0xd5, 0x07, 0x91, 0x59, 0x01, 0x5a, 0x30, 0x70,
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0xdd, 0x17, 0x15, 0x2f, 0xec, 0xd8, 0xf7, 0x0e, 0x59, 0x39, 0x67,
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0x33, 0x26, 0x67, 0xff, 0xc0, 0x0b, 0x31, 0x8e, 0xb4, 0x4a, 0x87,
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0x68, 0x58, 0x15, 0x11, 0xdb, 0x0c, 0x2e, 0x0d, 0x64, 0xf9, 0x8f,
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0xa7, 0x47, 0xb5, 0x48, 0x1d, 0xbe, 0xfa, 0x4f, 0xa4
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};
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static const unsigned char iv_512[64] = {
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0x6a, 0x09, 0xe6, 0x67, 0xf3, 0xbc, 0xc9, 0x08, 0xbb, 0x67, 0xae,
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0x85, 0x84, 0xca, 0xa7, 0x3b, 0x3c, 0x6e, 0xf3, 0x72, 0xfe, 0x94,
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0xf8, 0x2b, 0xa5, 0x4f, 0xf5, 0x3a, 0x5f, 0x1d, 0x36, 0xf1, 0x51,
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0x0e, 0x52, 0x7f, 0xad, 0xe6, 0x82, 0xd1, 0x9b, 0x05, 0x68, 0x8c,
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0x2b, 0x3e, 0x6c, 0x1f, 0x1f, 0x83, 0xd9, 0xab, 0xfb, 0x41, 0xbd,
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0x6b, 0x5b, 0xe0, 0xcd, 0x19, 0x13, 0x7e, 0x21, 0x79
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};
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int sha384(unsigned char *out, const unsigned char *in,
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unsigned long long inlen) {
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unsigned char h[64];
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unsigned char padded[256];
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unsigned int i;
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unsigned long long bytes = inlen;
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for (i = 0; i < 64; ++i) {
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h[i] = iv_384[i];
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}
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blocks(h, in, inlen);
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in += inlen;
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inlen &= 127;
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in -= inlen;
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for (i = 0; i < inlen; ++i) {
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padded[i] = in[i];
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}
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padded[inlen] = 0x80;
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if (inlen < 112) {
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for (i = inlen + 1; i < 119; ++i) {
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padded[i] = 0;
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}
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padded[119] = bytes >> 61;
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padded[120] = bytes >> 53;
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padded[121] = bytes >> 45;
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padded[122] = bytes >> 37;
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padded[123] = bytes >> 29;
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padded[124] = bytes >> 21;
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padded[125] = bytes >> 13;
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padded[126] = bytes >> 5;
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padded[127] = bytes << 3;
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blocks(h, padded, 128);
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} else {
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for (i = inlen + 1; i < 247; ++i) {
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padded[i] = 0;
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}
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padded[247] = bytes >> 61;
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padded[248] = bytes >> 53;
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padded[249] = bytes >> 45;
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padded[250] = bytes >> 37;
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padded[251] = bytes >> 29;
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padded[252] = bytes >> 21;
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padded[253] = bytes >> 13;
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padded[254] = bytes >> 5;
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padded[255] = bytes << 3;
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blocks(h, padded, 256);
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}
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for (i = 0; i < 48; ++i) {
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out[i] = h[i];
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}
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return 0;
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}
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int sha512(unsigned char *out, const unsigned char *in,
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unsigned long long inlen) {
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unsigned char h[64];
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unsigned char padded[256];
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unsigned int i;
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unsigned long long bytes = inlen;
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for (i = 0; i < 64; ++i) {
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h[i] = iv_512[i];
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}
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blocks(h, in, inlen);
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in += inlen;
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inlen &= 127;
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in -= inlen;
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for (i = 0; i < inlen; ++i) {
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padded[i] = in[i];
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}
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padded[inlen] = 0x80;
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if (inlen < 112) {
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for (i = inlen + 1; i < 119; ++i) {
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padded[i] = 0;
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}
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padded[119] = bytes >> 61;
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padded[120] = bytes >> 53;
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padded[121] = bytes >> 45;
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padded[122] = bytes >> 37;
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padded[123] = bytes >> 29;
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padded[124] = bytes >> 21;
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padded[125] = bytes >> 13;
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padded[126] = bytes >> 5;
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padded[127] = bytes << 3;
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blocks(h, padded, 128);
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} else {
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for (i = inlen + 1; i < 247; ++i) {
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padded[i] = 0;
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}
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padded[247] = bytes >> 61;
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padded[248] = bytes >> 53;
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padded[249] = bytes >> 45;
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padded[250] = bytes >> 37;
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padded[251] = bytes >> 29;
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padded[252] = bytes >> 21;
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padded[253] = bytes >> 13;
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padded[254] = bytes >> 5;
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padded[255] = bytes << 3;
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blocks(h, padded, 256);
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}
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for (i = 0; i < 64; ++i) {
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out[i] = h[i];
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}
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return 0;
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}
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