1 #if defined(ED25519_REFHASH) 5 #define HASH_BLOCK_SIZE 128 6 #define HASH_DIGEST_SIZE 64 8 typedef struct sha512_state_t {
12 uint8_t buffer[HASH_BLOCK_SIZE];
17 static const uint64_t sha512_constants[80] = {
18 0x428a2f98d728ae22ull, 0x7137449123ef65cdull, 0xb5c0fbcfec4d3b2full, 0xe9b5dba58189dbbcull,
19 0x3956c25bf348b538ull, 0x59f111f1b605d019ull, 0x923f82a4af194f9bull, 0xab1c5ed5da6d8118ull,
20 0xd807aa98a3030242ull, 0x12835b0145706fbeull, 0x243185be4ee4b28cull, 0x550c7dc3d5ffb4e2ull,
21 0x72be5d74f27b896full, 0x80deb1fe3b1696b1ull, 0x9bdc06a725c71235ull, 0xc19bf174cf692694ull,
22 0xe49b69c19ef14ad2ull, 0xefbe4786384f25e3ull, 0x0fc19dc68b8cd5b5ull, 0x240ca1cc77ac9c65ull,
23 0x2de92c6f592b0275ull, 0x4a7484aa6ea6e483ull, 0x5cb0a9dcbd41fbd4ull, 0x76f988da831153b5ull,
24 0x983e5152ee66dfabull, 0xa831c66d2db43210ull, 0xb00327c898fb213full, 0xbf597fc7beef0ee4ull,
25 0xc6e00bf33da88fc2ull, 0xd5a79147930aa725ull, 0x06ca6351e003826full, 0x142929670a0e6e70ull,
26 0x27b70a8546d22ffcull, 0x2e1b21385c26c926ull, 0x4d2c6dfc5ac42aedull, 0x53380d139d95b3dfull,
27 0x650a73548baf63deull, 0x766a0abb3c77b2a8ull, 0x81c2c92e47edaee6ull, 0x92722c851482353bull,
28 0xa2bfe8a14cf10364ull, 0xa81a664bbc423001ull, 0xc24b8b70d0f89791ull, 0xc76c51a30654be30ull,
29 0xd192e819d6ef5218ull, 0xd69906245565a910ull, 0xf40e35855771202aull, 0x106aa07032bbd1b8ull,
30 0x19a4c116b8d2d0c8ull, 0x1e376c085141ab53ull, 0x2748774cdf8eeb99ull, 0x34b0bcb5e19b48a8ull,
31 0x391c0cb3c5c95a63ull, 0x4ed8aa4ae3418acbull, 0x5b9cca4f7763e373ull, 0x682e6ff3d6b2b8a3ull,
32 0x748f82ee5defb2fcull, 0x78a5636f43172f60ull, 0x84c87814a1f0ab72ull, 0x8cc702081a6439ecull,
33 0x90befffa23631e28ull, 0xa4506cebde82bde9ull, 0xbef9a3f7b2c67915ull, 0xc67178f2e372532bull,
34 0xca273eceea26619cull, 0xd186b8c721c0c207ull, 0xeada7dd6cde0eb1eull, 0xf57d4f7fee6ed178ull,
35 0x06f067aa72176fbaull, 0x0a637dc5a2c898a6ull, 0x113f9804bef90daeull, 0x1b710b35131c471bull,
36 0x28db77f523047d84ull, 0x32caab7b40c72493ull, 0x3c9ebe0a15c9bebcull, 0x431d67c49c100d4cull,
37 0x4cc5d4becb3e42b6ull, 0x597f299cfc657e2aull, 0x5fcb6fab3ad6faecull, 0x6c44198c4a475817ull
42 return (x >> k) | (x << (64 - k));
46 sha512_LOAD64_BE(
const uint8_t *p) {
70 #define Ch(x,y,z) (z ^ (x & (y ^ z))) 71 #define Maj(x,y,z) (((x | y) & z) | (x & y)) 72 #define S0(x) (sha512_ROTR64(x, 28) ^ sha512_ROTR64(x, 34) ^ sha512_ROTR64(x, 39)) 73 #define S1(x) (sha512_ROTR64(x, 14) ^ sha512_ROTR64(x, 18) ^ sha512_ROTR64(x, 41)) 74 #define G0(x) (sha512_ROTR64(x, 1) ^ sha512_ROTR64(x, 8) ^ (x >> 7)) 75 #define G1(x) (sha512_ROTR64(x, 19) ^ sha512_ROTR64(x, 61) ^ (x >> 6)) 76 #define W0(in,i) (sha512_LOAD64_BE(&in[i * 8])) 77 #define W1(i) (G1(w[i - 2]) + w[i - 7] + G0(w[i - 15]) + w[i - 16]) 79 t1 = S0(r[0]) + Maj(r[0], r[1], r[2]); \ 80 t0 = r[7] + S1(r[4]) + Ch(r[4], r[5], r[6]) + sha512_constants[i] + w[i]; \ 91 sha512_blocks(sha512_state *S,
const uint8_t *in,
size_t blocks) {
95 for (i = 0; i < 8; i++) r[i] = S->H[i];
98 for (i = 0; i < 16; i++) { w[i] = W0(in, i); }
99 for (i = 16; i < 80; i++) { w[i] = W1(i); }
100 for (i = 0; i < 80; i++) { STEP(i); }
101 for (i = 0; i < 8; i++) { r[i] += S->H[i]; S->H[i] = r[i]; }
102 S->T[0] += HASH_BLOCK_SIZE * 8;
103 S->T[1] += (!S->T[0]) ? 1 : 0;
104 in += HASH_BLOCK_SIZE;
109 ed25519_hash_init(sha512_state *S) {
110 S->H[0] = 0x6a09e667f3bcc908ull;
111 S->H[1] = 0xbb67ae8584caa73bull;
112 S->H[2] = 0x3c6ef372fe94f82bull;
113 S->H[3] = 0xa54ff53a5f1d36f1ull;
114 S->H[4] = 0x510e527fade682d1ull;
115 S->H[5] = 0x9b05688c2b3e6c1full;
116 S->H[6] = 0x1f83d9abfb41bd6bull;
117 S->H[7] = 0x5be0cd19137e2179ull;
124 ed25519_hash_update(sha512_state *S,
const uint8_t *in,
size_t inlen) {
129 want = (HASH_BLOCK_SIZE - S->leftover);
130 want = (want < inlen) ? want : inlen;
131 memcpy(S->buffer + S->leftover, in, want);
133 if (S->leftover < HASH_BLOCK_SIZE)
137 sha512_blocks(S, S->buffer, 1);
141 blocks = (inlen & ~(HASH_BLOCK_SIZE - 1));
144 sha512_blocks(S, in,
blocks / HASH_BLOCK_SIZE);
150 memcpy(S->buffer, in, S->leftover);
154 ed25519_hash_final(sha512_state *S,
uint8_t *
hash) {
155 uint64_t t0 = S->T[0] + (S->leftover * 8),
t1 = S->T[1];
157 S->buffer[S->leftover] = 0x80;
158 if (S->leftover <= 111) {
159 memset(S->buffer + S->leftover + 1, 0, 111 - S->leftover);
161 memset(S->buffer + S->leftover + 1, 0, 127 - S->leftover);
162 sha512_blocks(S, S->buffer, 1);
163 memset(S->buffer, 0, 112);
166 sha512_STORE64_BE(S->buffer + 112,
t1);
167 sha512_STORE64_BE(S->buffer + 120,
t0);
168 sha512_blocks(S, S->buffer, 1);
170 sha512_STORE64_BE(&
hash[ 0], S->H[0]);
171 sha512_STORE64_BE(&
hash[ 8], S->H[1]);
172 sha512_STORE64_BE(&
hash[16], S->H[2]);
173 sha512_STORE64_BE(&
hash[24], S->H[3]);
174 sha512_STORE64_BE(&
hash[32], S->H[4]);
175 sha512_STORE64_BE(&
hash[40], S->H[5]);
176 sha512_STORE64_BE(&
hash[48], S->H[6]);
177 sha512_STORE64_BE(&
hash[56], S->H[7]);
183 ed25519_hash_init(&ctx);
184 ed25519_hash_update(&ctx, in, inlen);
185 ed25519_hash_final(&ctx,
hash);
188 #elif defined(ED25519_CUSTOMHASH) 194 #include <openssl/sha.h> 205 SHA512_Update(ctx, in, inlen);
210 SHA512_Final(
hash, ctx);
215 SHA512(in, inlen,
hash);
SHA512_CTX ed25519_hash_context
unsigned __int64 uint64_t
void * memcpy(void *a, const void *b, size_t c)