sha512.c (11787B)
1 2 /* MIT (BSD) license - see LICENSE file for details */ 3 /* SHA512 core code translated from the Bitcoin project's C++: 4 * 5 * src/crypto/sha512.cpp commit f914f1a746d7f91951c1da262a4a749dd3ebfa71 6 * Copyright (c) 2014 The Bitcoin Core developers 7 * Distributed under the MIT software license, see the accompanying 8 * file COPYING or http://www.opensource.org/licenses/mit-license.php. 9 */ 10 #include "sha512.h" 11 #include "endian.h" 12 #include "compiler.h" 13 #include <stdbool.h> 14 #include <assert.h> 15 #include <string.h> 16 17 static void invalidate_sha512(struct sha512_ctx *ctx) 18 { 19 #ifdef CCAN_CRYPTO_SHA512_USE_OPENSSL 20 ctx->c.md_len = 0; 21 #else 22 ctx->bytes = (size_t)-1; 23 #endif 24 } 25 26 static void check_sha512(struct sha512_ctx *ctx) 27 { 28 #ifdef CCAN_CRYPTO_SHA512_USE_OPENSSL 29 assert(ctx->c.md_len != 0); 30 #else 31 assert(ctx->bytes != (size_t)-1); 32 #endif 33 } 34 35 #ifdef CCAN_CRYPTO_SHA512_USE_OPENSSL 36 void sha512_init(struct sha512_ctx *ctx) 37 { 38 SHA512_Init(&ctx->c); 39 } 40 41 void sha512_update(struct sha512_ctx *ctx, const void *p, size_t size) 42 { 43 check_sha512(ctx); 44 SHA512_Update(&ctx->c, p, size); 45 } 46 47 void sha512_done(struct sha512_ctx *ctx, struct sha512 *res) 48 { 49 SHA512_Final(res->u.u8, &ctx->c); 50 invalidate_sha512(ctx); 51 } 52 #else 53 static uint64_t Ch(uint64_t x, uint64_t y, uint64_t z) 54 { 55 return z ^ (x & (y ^ z)); 56 } 57 static uint64_t Maj(uint64_t x, uint64_t y, uint64_t z) 58 { 59 return (x & y) | (z & (x | y)); 60 } 61 static uint64_t Sigma0(uint64_t x) 62 { 63 return (x >> 28 | x << 36) ^ (x >> 34 | x << 30) ^ (x >> 39 | x << 25); 64 } 65 static uint64_t Sigma1(uint64_t x) 66 { 67 return (x >> 14 | x << 50) ^ (x >> 18 | x << 46) ^ (x >> 41 | x << 23); 68 } 69 static uint64_t sigma0(uint64_t x) 70 { 71 return (x >> 1 | x << 63) ^ (x >> 8 | x << 56) ^ (x >> 7); 72 } 73 static uint64_t sigma1(uint64_t x) 74 { 75 return (x >> 19 | x << 45) ^ (x >> 61 | x << 3) ^ (x >> 6); 76 } 77 78 /** One round of SHA-512. */ 79 static void Round(uint64_t a, uint64_t b, uint64_t c, uint64_t *d, uint64_t e, uint64_t f, uint64_t g, uint64_t *h, uint64_t k, uint64_t w) 80 { 81 uint64_t t1 = *h + Sigma1(e) + Ch(e, f, g) + k + w; 82 uint64_t t2 = Sigma0(a) + Maj(a, b, c); 83 *d += t1; 84 *h = t1 + t2; 85 } 86 87 /** Perform one SHA-512 transformation, processing a 128-byte chunk. */ 88 static void Transform(uint64_t *s, const uint64_t *chunk) 89 { 90 uint64_t a = s[0], b = s[1], c = s[2], d = s[3], e = s[4], f = s[5], g = s[6], h = s[7]; 91 uint64_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15; 92 93 Round(a, b, c, &d, e, f, g, &h, 0x428a2f98d728ae22ull, w0 = be64_to_cpu(chunk[0])); 94 Round(h, a, b, &c, d, e, f, &g, 0x7137449123ef65cdull, w1 = be64_to_cpu(chunk[1])); 95 Round(g, h, a, &b, c, d, e, &f, 0xb5c0fbcfec4d3b2full, w2 = be64_to_cpu(chunk[2])); 96 Round(f, g, h, &a, b, c, d, &e, 0xe9b5dba58189dbbcull, w3 = be64_to_cpu(chunk[3])); 97 Round(e, f, g, &h, a, b, c, &d, 0x3956c25bf348b538ull, w4 = be64_to_cpu(chunk[4])); 98 Round(d, e, f, &g, h, a, b, &c, 0x59f111f1b605d019ull, w5 = be64_to_cpu(chunk[5])); 99 Round(c, d, e, &f, g, h, a, &b, 0x923f82a4af194f9bull, w6 = be64_to_cpu(chunk[6])); 100 Round(b, c, d, &e, f, g, h, &a, 0xab1c5ed5da6d8118ull, w7 = be64_to_cpu(chunk[7])); 101 Round(a, b, c, &d, e, f, g, &h, 0xd807aa98a3030242ull, w8 = be64_to_cpu(chunk[8])); 102 Round(h, a, b, &c, d, e, f, &g, 0x12835b0145706fbeull, w9 = be64_to_cpu(chunk[9])); 103 Round(g, h, a, &b, c, d, e, &f, 0x243185be4ee4b28cull, w10 = be64_to_cpu(chunk[10])); 104 Round(f, g, h, &a, b, c, d, &e, 0x550c7dc3d5ffb4e2ull, w11 = be64_to_cpu(chunk[11])); 105 Round(e, f, g, &h, a, b, c, &d, 0x72be5d74f27b896full, w12 = be64_to_cpu(chunk[12])); 106 Round(d, e, f, &g, h, a, b, &c, 0x80deb1fe3b1696b1ull, w13 = be64_to_cpu(chunk[13])); 107 Round(c, d, e, &f, g, h, a, &b, 0x9bdc06a725c71235ull, w14 = be64_to_cpu(chunk[14])); 108 Round(b, c, d, &e, f, g, h, &a, 0xc19bf174cf692694ull, w15 = be64_to_cpu(chunk[15])); 109 110 Round(a, b, c, &d, e, f, g, &h, 0xe49b69c19ef14ad2ull, w0 += sigma1(w14) + w9 + sigma0(w1)); 111 Round(h, a, b, &c, d, e, f, &g, 0xefbe4786384f25e3ull, w1 += sigma1(w15) + w10 + sigma0(w2)); 112 Round(g, h, a, &b, c, d, e, &f, 0x0fc19dc68b8cd5b5ull, w2 += sigma1(w0) + w11 + sigma0(w3)); 113 Round(f, g, h, &a, b, c, d, &e, 0x240ca1cc77ac9c65ull, w3 += sigma1(w1) + w12 + sigma0(w4)); 114 Round(e, f, g, &h, a, b, c, &d, 0x2de92c6f592b0275ull, w4 += sigma1(w2) + w13 + sigma0(w5)); 115 Round(d, e, f, &g, h, a, b, &c, 0x4a7484aa6ea6e483ull, w5 += sigma1(w3) + w14 + sigma0(w6)); 116 Round(c, d, e, &f, g, h, a, &b, 0x5cb0a9dcbd41fbd4ull, w6 += sigma1(w4) + w15 + sigma0(w7)); 117 Round(b, c, d, &e, f, g, h, &a, 0x76f988da831153b5ull, w7 += sigma1(w5) + w0 + sigma0(w8)); 118 Round(a, b, c, &d, e, f, g, &h, 0x983e5152ee66dfabull, w8 += sigma1(w6) + w1 + sigma0(w9)); 119 Round(h, a, b, &c, d, e, f, &g, 0xa831c66d2db43210ull, w9 += sigma1(w7) + w2 + sigma0(w10)); 120 Round(g, h, a, &b, c, d, e, &f, 0xb00327c898fb213full, w10 += sigma1(w8) + w3 + sigma0(w11)); 121 Round(f, g, h, &a, b, c, d, &e, 0xbf597fc7beef0ee4ull, w11 += sigma1(w9) + w4 + sigma0(w12)); 122 Round(e, f, g, &h, a, b, c, &d, 0xc6e00bf33da88fc2ull, w12 += sigma1(w10) + w5 + sigma0(w13)); 123 Round(d, e, f, &g, h, a, b, &c, 0xd5a79147930aa725ull, w13 += sigma1(w11) + w6 + sigma0(w14)); 124 Round(c, d, e, &f, g, h, a, &b, 0x06ca6351e003826full, w14 += sigma1(w12) + w7 + sigma0(w15)); 125 Round(b, c, d, &e, f, g, h, &a, 0x142929670a0e6e70ull, w15 += sigma1(w13) + w8 + sigma0(w0)); 126 127 Round(a, b, c, &d, e, f, g, &h, 0x27b70a8546d22ffcull, w0 += sigma1(w14) + w9 + sigma0(w1)); 128 Round(h, a, b, &c, d, e, f, &g, 0x2e1b21385c26c926ull, w1 += sigma1(w15) + w10 + sigma0(w2)); 129 Round(g, h, a, &b, c, d, e, &f, 0x4d2c6dfc5ac42aedull, w2 += sigma1(w0) + w11 + sigma0(w3)); 130 Round(f, g, h, &a, b, c, d, &e, 0x53380d139d95b3dfull, w3 += sigma1(w1) + w12 + sigma0(w4)); 131 Round(e, f, g, &h, a, b, c, &d, 0x650a73548baf63deull, w4 += sigma1(w2) + w13 + sigma0(w5)); 132 Round(d, e, f, &g, h, a, b, &c, 0x766a0abb3c77b2a8ull, w5 += sigma1(w3) + w14 + sigma0(w6)); 133 Round(c, d, e, &f, g, h, a, &b, 0x81c2c92e47edaee6ull, w6 += sigma1(w4) + w15 + sigma0(w7)); 134 Round(b, c, d, &e, f, g, h, &a, 0x92722c851482353bull, w7 += sigma1(w5) + w0 + sigma0(w8)); 135 Round(a, b, c, &d, e, f, g, &h, 0xa2bfe8a14cf10364ull, w8 += sigma1(w6) + w1 + sigma0(w9)); 136 Round(h, a, b, &c, d, e, f, &g, 0xa81a664bbc423001ull, w9 += sigma1(w7) + w2 + sigma0(w10)); 137 Round(g, h, a, &b, c, d, e, &f, 0xc24b8b70d0f89791ull, w10 += sigma1(w8) + w3 + sigma0(w11)); 138 Round(f, g, h, &a, b, c, d, &e, 0xc76c51a30654be30ull, w11 += sigma1(w9) + w4 + sigma0(w12)); 139 Round(e, f, g, &h, a, b, c, &d, 0xd192e819d6ef5218ull, w12 += sigma1(w10) + w5 + sigma0(w13)); 140 Round(d, e, f, &g, h, a, b, &c, 0xd69906245565a910ull, w13 += sigma1(w11) + w6 + sigma0(w14)); 141 Round(c, d, e, &f, g, h, a, &b, 0xf40e35855771202aull, w14 += sigma1(w12) + w7 + sigma0(w15)); 142 Round(b, c, d, &e, f, g, h, &a, 0x106aa07032bbd1b8ull, w15 += sigma1(w13) + w8 + sigma0(w0)); 143 144 Round(a, b, c, &d, e, f, g, &h, 0x19a4c116b8d2d0c8ull, w0 += sigma1(w14) + w9 + sigma0(w1)); 145 Round(h, a, b, &c, d, e, f, &g, 0x1e376c085141ab53ull, w1 += sigma1(w15) + w10 + sigma0(w2)); 146 Round(g, h, a, &b, c, d, e, &f, 0x2748774cdf8eeb99ull, w2 += sigma1(w0) + w11 + sigma0(w3)); 147 Round(f, g, h, &a, b, c, d, &e, 0x34b0bcb5e19b48a8ull, w3 += sigma1(w1) + w12 + sigma0(w4)); 148 Round(e, f, g, &h, a, b, c, &d, 0x391c0cb3c5c95a63ull, w4 += sigma1(w2) + w13 + sigma0(w5)); 149 Round(d, e, f, &g, h, a, b, &c, 0x4ed8aa4ae3418acbull, w5 += sigma1(w3) + w14 + sigma0(w6)); 150 Round(c, d, e, &f, g, h, a, &b, 0x5b9cca4f7763e373ull, w6 += sigma1(w4) + w15 + sigma0(w7)); 151 Round(b, c, d, &e, f, g, h, &a, 0x682e6ff3d6b2b8a3ull, w7 += sigma1(w5) + w0 + sigma0(w8)); 152 Round(a, b, c, &d, e, f, g, &h, 0x748f82ee5defb2fcull, w8 += sigma1(w6) + w1 + sigma0(w9)); 153 Round(h, a, b, &c, d, e, f, &g, 0x78a5636f43172f60ull, w9 += sigma1(w7) + w2 + sigma0(w10)); 154 Round(g, h, a, &b, c, d, e, &f, 0x84c87814a1f0ab72ull, w10 += sigma1(w8) + w3 + sigma0(w11)); 155 Round(f, g, h, &a, b, c, d, &e, 0x8cc702081a6439ecull, w11 += sigma1(w9) + w4 + sigma0(w12)); 156 Round(e, f, g, &h, a, b, c, &d, 0x90befffa23631e28ull, w12 += sigma1(w10) + w5 + sigma0(w13)); 157 Round(d, e, f, &g, h, a, b, &c, 0xa4506cebde82bde9ull, w13 += sigma1(w11) + w6 + sigma0(w14)); 158 Round(c, d, e, &f, g, h, a, &b, 0xbef9a3f7b2c67915ull, w14 += sigma1(w12) + w7 + sigma0(w15)); 159 Round(b, c, d, &e, f, g, h, &a, 0xc67178f2e372532bull, w15 += sigma1(w13) + w8 + sigma0(w0)); 160 161 Round(a, b, c, &d, e, f, g, &h, 0xca273eceea26619cull, w0 += sigma1(w14) + w9 + sigma0(w1)); 162 Round(h, a, b, &c, d, e, f, &g, 0xd186b8c721c0c207ull, w1 += sigma1(w15) + w10 + sigma0(w2)); 163 Round(g, h, a, &b, c, d, e, &f, 0xeada7dd6cde0eb1eull, w2 += sigma1(w0) + w11 + sigma0(w3)); 164 Round(f, g, h, &a, b, c, d, &e, 0xf57d4f7fee6ed178ull, w3 += sigma1(w1) + w12 + sigma0(w4)); 165 Round(e, f, g, &h, a, b, c, &d, 0x06f067aa72176fbaull, w4 += sigma1(w2) + w13 + sigma0(w5)); 166 Round(d, e, f, &g, h, a, b, &c, 0x0a637dc5a2c898a6ull, w5 += sigma1(w3) + w14 + sigma0(w6)); 167 Round(c, d, e, &f, g, h, a, &b, 0x113f9804bef90daeull, w6 += sigma1(w4) + w15 + sigma0(w7)); 168 Round(b, c, d, &e, f, g, h, &a, 0x1b710b35131c471bull, w7 += sigma1(w5) + w0 + sigma0(w8)); 169 Round(a, b, c, &d, e, f, g, &h, 0x28db77f523047d84ull, w8 += sigma1(w6) + w1 + sigma0(w9)); 170 Round(h, a, b, &c, d, e, f, &g, 0x32caab7b40c72493ull, w9 += sigma1(w7) + w2 + sigma0(w10)); 171 Round(g, h, a, &b, c, d, e, &f, 0x3c9ebe0a15c9bebcull, w10 += sigma1(w8) + w3 + sigma0(w11)); 172 Round(f, g, h, &a, b, c, d, &e, 0x431d67c49c100d4cull, w11 += sigma1(w9) + w4 + sigma0(w12)); 173 Round(e, f, g, &h, a, b, c, &d, 0x4cc5d4becb3e42b6ull, w12 += sigma1(w10) + w5 + sigma0(w13)); 174 Round(d, e, f, &g, h, a, b, &c, 0x597f299cfc657e2aull, w13 += sigma1(w11) + w6 + sigma0(w14)); 175 Round(c, d, e, &f, g, h, a, &b, 0x5fcb6fab3ad6faecull, w14 + sigma1(w12) + w7 + sigma0(w15)); 176 Round(b, c, d, &e, f, g, h, &a, 0x6c44198c4a475817ull, w15 + sigma1(w13) + w8 + sigma0(w0)); 177 178 s[0] += a; 179 s[1] += b; 180 s[2] += c; 181 s[3] += d; 182 s[4] += e; 183 s[5] += f; 184 s[6] += g; 185 s[7] += h; 186 } 187 188 static void add(struct sha512_ctx *ctx, const void *p, size_t len) 189 { 190 const unsigned char *data = p; 191 size_t bufsize = ctx->bytes % 128; 192 193 if (bufsize + len >= 128) { 194 /* Fill the buffer, and process it. */ 195 memcpy(ctx->buf.u8 + bufsize, data, 128 - bufsize); 196 ctx->bytes += 128 - bufsize; 197 data += 128 - bufsize; 198 len -= 128 - bufsize; 199 Transform(ctx->s, ctx->buf.u64); 200 bufsize = 0; 201 } 202 203 while (len >= 128) { 204 /* Process full chunks directly from the source. */ 205 if (alignment_ok(data, sizeof(uint64_t))) 206 Transform(ctx->s, (const uint64_t *)data); 207 else { 208 memcpy(ctx->buf.u8, data, sizeof(ctx->buf)); 209 Transform(ctx->s, ctx->buf.u64); 210 } 211 ctx->bytes += 128; 212 data += 128; 213 len -= 128; 214 } 215 216 if (len) { 217 /* Fill the buffer with what remains. */ 218 memcpy(ctx->buf.u8 + bufsize, data, len); 219 ctx->bytes += len; 220 } 221 } 222 223 void sha512_init(struct sha512_ctx *ctx) 224 { 225 struct sha512_ctx init = SHA512_INIT; 226 *ctx = init; 227 } 228 229 void sha512_update(struct sha512_ctx *ctx, const void *p, size_t size) 230 { 231 check_sha512(ctx); 232 add(ctx, p, size); 233 } 234 235 void sha512_done(struct sha512_ctx *ctx, struct sha512 *res) 236 { 237 static const unsigned char pad[128] = { 0x80 }; 238 uint64_t sizedesc[2] = { 0, 0 }; 239 size_t i; 240 241 sizedesc[1] = cpu_to_be64((uint64_t)ctx->bytes << 3); 242 243 /* Add '1' bit to terminate, then all 0 bits, up to next block - 16. */ 244 add(ctx, pad, 1 + ((256 - 16 - (ctx->bytes % 128) - 1) % 128)); 245 /* Add number of bits of data (big endian) */ 246 add(ctx, sizedesc, sizeof(sizedesc)); 247 for (i = 0; i < sizeof(ctx->s) / sizeof(ctx->s[0]); i++) 248 res->u.u64[i] = cpu_to_be64(ctx->s[i]); 249 invalidate_sha512(ctx); 250 } 251 #endif /* CCAN_CRYPTO_SHA512_USE_OPENSSL */ 252 253 void sha512(struct sha512 *sha, const void *p, size_t size) 254 { 255 struct sha512_ctx ctx; 256 257 sha512_init(&ctx); 258 sha512_update(&ctx, p, size); 259 sha512_done(&ctx, sha); 260 memset(&ctx, 0, sizeof(ctx)); 261 }