diff options
Diffstat (limited to 'src/crypto/sha2.cpp')
| -rw-r--r-- | src/crypto/sha2.cpp | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/src/crypto/sha2.cpp b/src/crypto/sha2.cpp new file mode 100644 index 0000000000..0d0c32883f --- /dev/null +++ b/src/crypto/sha2.cpp @@ -0,0 +1,428 @@ +// Copyright (c) 2014 The Bitcoin developers +// Distributed under the MIT/X11 software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include "crypto/sha2.h" + +#include <string.h> + +// Internal implementation code. +namespace { + +/** Read 4 bytes, and interpret them as a 32-bit unsigned big-endian integer. */ +uint32_t inline ReadBE32(const unsigned char *data) { + return ((uint32_t)data[0] << 24 | (uint32_t)data[1] << 16 | (uint32_t)data[2] << 8 | (uint32_t)data[3]); +} + +/** Write a 32-bit unsigned big-endian integer. */ +void inline WriteBE32(unsigned char *data, uint32_t x) { + data[0] = x >> 24; + data[1] = x >> 16; + data[2] = x >> 8; + data[3] = x; +} + +/** Read 8 bytes, and interpret them as a 64-bit unsigned big-endian integer. */ +uint64_t inline ReadBE64(const unsigned char *data) { + return ((uint64_t)data[0] << 56 | (uint64_t)data[1] << 48 | (uint64_t)data[2] << 40 | (uint64_t)data[3] << 32 | + (uint64_t)data[4] << 24 | (uint64_t)data[5] << 16 | (uint64_t)data[6] << 8 | (uint64_t)data[7]); +} + +/** Write a 64-bit unsigned big-endian integer. */ +void inline WriteBE64(unsigned char *data, uint64_t x) { + data[0] = x >> 56; + data[1] = x >> 48; + data[2] = x >> 40; + data[3] = x >> 32; + data[4] = x >> 24; + data[5] = x >> 16; + data[6] = x >> 8; + data[7] = x; +} + +/// Internal SHA-256 implementation. +namespace sha256 { + +uint32_t inline Ch(uint32_t x, uint32_t y, uint32_t z) { return z ^ (x & (y ^ z)); } +uint32_t inline Maj(uint32_t x, uint32_t y, uint32_t z) { return (x & y) | (z & (x | y)); } +uint32_t inline Sigma0(uint32_t x) { return (x >> 2 | x << 30) ^ (x >> 13 | x << 19) ^ (x >> 22 | x << 10); } +uint32_t inline Sigma1(uint32_t x) { return (x >> 6 | x << 26) ^ (x >> 11 | x << 21) ^ (x >> 25 | x << 7); } +uint32_t inline sigma0(uint32_t x) { return (x >> 7 | x << 25) ^ (x >> 18 | x << 14) ^ (x >> 3); } +uint32_t inline sigma1(uint32_t x) { return (x >> 17 | x << 15) ^ (x >> 19 | x << 13) ^ (x >> 10); } + +/** One round of SHA-256. */ +void inline Round(uint32_t a, uint32_t b, uint32_t c, uint32_t &d, + uint32_t e, uint32_t f, uint32_t g, uint32_t &h, + uint32_t k, uint32_t w) { + uint32_t t1 = h + Sigma1(e) + Ch(e, f, g) + k + w; + uint32_t t2 = Sigma0(a) + Maj(a, b, c); + d += t1; + h = t1 + t2; +} + +/** Initialize SHA-256 state. */ +void inline Initialize(uint32_t *s) { + s[0] = 0x6a09e667ul; + s[1] = 0xbb67ae85ul; + s[2] = 0x3c6ef372ul; + s[3] = 0xa54ff53aul; + s[4] = 0x510e527ful; + s[5] = 0x9b05688cul; + s[6] = 0x1f83d9abul; + s[7] = 0x5be0cd19ul; +} + +/** Perform one SHA-256 transformation, processing a 64-byte chunk. */ +void Transform(uint32_t *s, const unsigned char *chunk) { + uint32_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]; + uint32_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15; + + Round(a, b, c, d, e, f, g, h, 0x428a2f98, w0 = ReadBE32(chunk + 0)); + Round(h, a, b, c, d, e, f, g, 0x71374491, w1 = ReadBE32(chunk + 4)); + Round(g, h, a, b, c, d, e, f, 0xb5c0fbcf, w2 = ReadBE32(chunk + 8)); + Round(f, g, h, a, b, c, d, e, 0xe9b5dba5, w3 = ReadBE32(chunk + 12)); + Round(e, f, g, h, a, b, c, d, 0x3956c25b, w4 = ReadBE32(chunk + 16)); + Round(d, e, f, g, h, a, b, c, 0x59f111f1, w5 = ReadBE32(chunk + 20)); + Round(c, d, e, f, g, h, a, b, 0x923f82a4, w6 = ReadBE32(chunk + 24)); + Round(b, c, d, e, f, g, h, a, 0xab1c5ed5, w7 = ReadBE32(chunk + 28)); + Round(a, b, c, d, e, f, g, h, 0xd807aa98, w8 = ReadBE32(chunk + 32)); + Round(h, a, b, c, d, e, f, g, 0x12835b01, w9 = ReadBE32(chunk + 36)); + Round(g, h, a, b, c, d, e, f, 0x243185be, w10 = ReadBE32(chunk + 40)); + Round(f, g, h, a, b, c, d, e, 0x550c7dc3, w11 = ReadBE32(chunk + 44)); + Round(e, f, g, h, a, b, c, d, 0x72be5d74, w12 = ReadBE32(chunk + 48)); + Round(d, e, f, g, h, a, b, c, 0x80deb1fe, w13 = ReadBE32(chunk + 52)); + Round(c, d, e, f, g, h, a, b, 0x9bdc06a7, w14 = ReadBE32(chunk + 56)); + Round(b, c, d, e, f, g, h, a, 0xc19bf174, w15 = ReadBE32(chunk + 60)); + + Round(a, b, c, d, e, f, g, h, 0xe49b69c1, w0 += sigma1(w14) + w9 + sigma0( w1)); + Round(h, a, b, c, d, e, f, g, 0xefbe4786, w1 += sigma1(w15) + w10 + sigma0( w2)); + Round(g, h, a, b, c, d, e, f, 0x0fc19dc6, w2 += sigma1( w0) + w11 + sigma0( w3)); + Round(f, g, h, a, b, c, d, e, 0x240ca1cc, w3 += sigma1( w1) + w12 + sigma0( w4)); + Round(e, f, g, h, a, b, c, d, 0x2de92c6f, w4 += sigma1( w2) + w13 + sigma0( w5)); + Round(d, e, f, g, h, a, b, c, 0x4a7484aa, w5 += sigma1( w3) + w14 + sigma0( w6)); + Round(c, d, e, f, g, h, a, b, 0x5cb0a9dc, w6 += sigma1( w4) + w15 + sigma0( w7)); + Round(b, c, d, e, f, g, h, a, 0x76f988da, w7 += sigma1( w5) + w0 + sigma0( w8)); + Round(a, b, c, d, e, f, g, h, 0x983e5152, w8 += sigma1( w6) + w1 + sigma0( w9)); + Round(h, a, b, c, d, e, f, g, 0xa831c66d, w9 += sigma1( w7) + w2 + sigma0(w10)); + Round(g, h, a, b, c, d, e, f, 0xb00327c8, w10 += sigma1( w8) + w3 + sigma0(w11)); + Round(f, g, h, a, b, c, d, e, 0xbf597fc7, w11 += sigma1( w9) + w4 + sigma0(w12)); + Round(e, f, g, h, a, b, c, d, 0xc6e00bf3, w12 += sigma1(w10) + w5 + sigma0(w13)); + Round(d, e, f, g, h, a, b, c, 0xd5a79147, w13 += sigma1(w11) + w6 + sigma0(w14)); + Round(c, d, e, f, g, h, a, b, 0x06ca6351, w14 += sigma1(w12) + w7 + sigma0(w15)); + Round(b, c, d, e, f, g, h, a, 0x14292967, w15 += sigma1(w13) + w8 + sigma0( w0)); + + Round(a, b, c, d, e, f, g, h, 0x27b70a85, w0 += sigma1(w14) + w9 + sigma0( w1)); + Round(h, a, b, c, d, e, f, g, 0x2e1b2138, w1 += sigma1(w15) + w10 + sigma0( w2)); + Round(g, h, a, b, c, d, e, f, 0x4d2c6dfc, w2 += sigma1( w0) + w11 + sigma0( w3)); + Round(f, g, h, a, b, c, d, e, 0x53380d13, w3 += sigma1( w1) + w12 + sigma0( w4)); + Round(e, f, g, h, a, b, c, d, 0x650a7354, w4 += sigma1( w2) + w13 + sigma0( w5)); + Round(d, e, f, g, h, a, b, c, 0x766a0abb, w5 += sigma1( w3) + w14 + sigma0( w6)); + Round(c, d, e, f, g, h, a, b, 0x81c2c92e, w6 += sigma1( w4) + w15 + sigma0( w7)); + Round(b, c, d, e, f, g, h, a, 0x92722c85, w7 += sigma1( w5) + w0 + sigma0( w8)); + Round(a, b, c, d, e, f, g, h, 0xa2bfe8a1, w8 += sigma1( w6) + w1 + sigma0( w9)); + Round(h, a, b, c, d, e, f, g, 0xa81a664b, w9 += sigma1( w7) + w2 + sigma0(w10)); + Round(g, h, a, b, c, d, e, f, 0xc24b8b70, w10 += sigma1( w8) + w3 + sigma0(w11)); + Round(f, g, h, a, b, c, d, e, 0xc76c51a3, w11 += sigma1( w9) + w4 + sigma0(w12)); + Round(e, f, g, h, a, b, c, d, 0xd192e819, w12 += sigma1(w10) + w5 + sigma0(w13)); + Round(d, e, f, g, h, a, b, c, 0xd6990624, w13 += sigma1(w11) + w6 + sigma0(w14)); + Round(c, d, e, f, g, h, a, b, 0xf40e3585, w14 += sigma1(w12) + w7 + sigma0(w15)); + Round(b, c, d, e, f, g, h, a, 0x106aa070, w15 += sigma1(w13) + w8 + sigma0( w0)); + + Round(a, b, c, d, e, f, g, h, 0x19a4c116, w0 += sigma1(w14) + w9 + sigma0( w1)); + Round(h, a, b, c, d, e, f, g, 0x1e376c08, w1 += sigma1(w15) + w10 + sigma0( w2)); + Round(g, h, a, b, c, d, e, f, 0x2748774c, w2 += sigma1( w0) + w11 + sigma0( w3)); + Round(f, g, h, a, b, c, d, e, 0x34b0bcb5, w3 += sigma1( w1) + w12 + sigma0( w4)); + Round(e, f, g, h, a, b, c, d, 0x391c0cb3, w4 += sigma1( w2) + w13 + sigma0( w5)); + Round(d, e, f, g, h, a, b, c, 0x4ed8aa4a, w5 += sigma1( w3) + w14 + sigma0( w6)); + Round(c, d, e, f, g, h, a, b, 0x5b9cca4f, w6 += sigma1( w4) + w15 + sigma0( w7)); + Round(b, c, d, e, f, g, h, a, 0x682e6ff3, w7 += sigma1( w5) + w0 + sigma0( w8)); + Round(a, b, c, d, e, f, g, h, 0x748f82ee, w8 += sigma1( w6) + w1 + sigma0( w9)); + Round(h, a, b, c, d, e, f, g, 0x78a5636f, w9 += sigma1( w7) + w2 + sigma0(w10)); + Round(g, h, a, b, c, d, e, f, 0x84c87814, w10 += sigma1( w8) + w3 + sigma0(w11)); + Round(f, g, h, a, b, c, d, e, 0x8cc70208, w11 += sigma1( w9) + w4 + sigma0(w12)); + Round(e, f, g, h, a, b, c, d, 0x90befffa, w12 += sigma1(w10) + w5 + sigma0(w13)); + Round(d, e, f, g, h, a, b, c, 0xa4506ceb, w13 += sigma1(w11) + w6 + sigma0(w14)); + Round(c, d, e, f, g, h, a, b, 0xbef9a3f7, w14 + sigma1(w12) + w7 + sigma0(w15)); + Round(b, c, d, e, f, g, h, a, 0xc67178f2, w15 + sigma1(w13) + w8 + sigma0( w0)); + + s[0] += a; + s[1] += b; + s[2] += c; + s[3] += d; + s[4] += e; + s[5] += f; + s[6] += g; + s[7] += h; +} + +} // namespace sha256 + +/// Internal SHA-512 implementation. +namespace sha512 { + +uint64_t inline Ch(uint64_t x, uint64_t y, uint64_t z) { return z ^ (x & (y ^ z)); } +uint64_t inline Maj(uint64_t x, uint64_t y, uint64_t z) { return (x & y) | (z & (x | y)); } +uint64_t inline Sigma0(uint64_t x) { return (x >> 28 | x << 36) ^ (x >> 34 | x << 30) ^ (x >> 39 | x << 25); } +uint64_t inline Sigma1(uint64_t x) { return (x >> 14 | x << 50) ^ (x >> 18 | x << 46) ^ (x >> 41 | x << 23); } +uint64_t inline sigma0(uint64_t x) { return (x >> 1 | x << 63) ^ (x >> 8 | x << 56) ^ (x >> 7); } +uint64_t inline sigma1(uint64_t x) { return (x >> 19 | x << 45) ^ (x >> 61 | x << 3) ^ (x >> 6); } + +/** One round of SHA-512. */ +void inline 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) { + uint64_t t1 = h + Sigma1(e) + Ch(e, f, g) + k + w; + uint64_t t2 = Sigma0(a) + Maj(a, b, c); + d += t1; + h = t1 + t2; +} + +/** Initialize SHA-256 state. */ +void inline Initialize(uint64_t *s) { + s[0] = 0x6a09e667f3bcc908ull; + s[1] = 0xbb67ae8584caa73bull; + s[2] = 0x3c6ef372fe94f82bull; + s[3] = 0xa54ff53a5f1d36f1ull; + s[4] = 0x510e527fade682d1ull; + s[5] = 0x9b05688c2b3e6c1full; + s[6] = 0x1f83d9abfb41bd6bull; + s[7] = 0x5be0cd19137e2179ull; +} + +/** Perform one SHA-512 transformation, processing a 128-byte chunk. */ +void Transform(uint64_t *s, const unsigned char *chunk) { + 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]; + uint64_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15; + + Round(a, b, c, d, e, f, g, h, 0x428a2f98d728ae22ull, w0 = ReadBE64(chunk + 0)); + Round(h, a, b, c, d, e, f, g, 0x7137449123ef65cdull, w1 = ReadBE64(chunk + 8)); + Round(g, h, a, b, c, d, e, f, 0xb5c0fbcfec4d3b2full, w2 = ReadBE64(chunk + 16)); + Round(f, g, h, a, b, c, d, e, 0xe9b5dba58189dbbcull, w3 = ReadBE64(chunk + 24)); + Round(e, f, g, h, a, b, c, d, 0x3956c25bf348b538ull, w4 = ReadBE64(chunk + 32)); + Round(d, e, f, g, h, a, b, c, 0x59f111f1b605d019ull, w5 = ReadBE64(chunk + 40)); + Round(c, d, e, f, g, h, a, b, 0x923f82a4af194f9bull, w6 = ReadBE64(chunk + 48)); + Round(b, c, d, e, f, g, h, a, 0xab1c5ed5da6d8118ull, w7 = ReadBE64(chunk + 56)); + Round(a, b, c, d, e, f, g, h, 0xd807aa98a3030242ull, w8 = ReadBE64(chunk + 64)); + Round(h, a, b, c, d, e, f, g, 0x12835b0145706fbeull, w9 = ReadBE64(chunk + 72)); + Round(g, h, a, b, c, d, e, f, 0x243185be4ee4b28cull, w10 = ReadBE64(chunk + 80)); + Round(f, g, h, a, b, c, d, e, 0x550c7dc3d5ffb4e2ull, w11 = ReadBE64(chunk + 88)); + Round(e, f, g, h, a, b, c, d, 0x72be5d74f27b896full, w12 = ReadBE64(chunk + 96)); + Round(d, e, f, g, h, a, b, c, 0x80deb1fe3b1696b1ull, w13 = ReadBE64(chunk + 104)); + Round(c, d, e, f, g, h, a, b, 0x9bdc06a725c71235ull, w14 = ReadBE64(chunk + 112)); + Round(b, c, d, e, f, g, h, a, 0xc19bf174cf692694ull, w15 = ReadBE64(chunk + 120)); + + Round(a, b, c, d, e, f, g, h, 0xe49b69c19ef14ad2ull, w0 += sigma1(w14) + w9 + sigma0( w1)); + Round(h, a, b, c, d, e, f, g, 0xefbe4786384f25e3ull, w1 += sigma1(w15) + w10 + sigma0( w2)); + Round(g, h, a, b, c, d, e, f, 0x0fc19dc68b8cd5b5ull, w2 += sigma1( w0) + w11 + sigma0( w3)); + Round(f, g, h, a, b, c, d, e, 0x240ca1cc77ac9c65ull, w3 += sigma1( w1) + w12 + sigma0( w4)); + Round(e, f, g, h, a, b, c, d, 0x2de92c6f592b0275ull, w4 += sigma1( w2) + w13 + sigma0( w5)); + Round(d, e, f, g, h, a, b, c, 0x4a7484aa6ea6e483ull, w5 += sigma1( w3) + w14 + sigma0( w6)); + Round(c, d, e, f, g, h, a, b, 0x5cb0a9dcbd41fbd4ull, w6 += sigma1( w4) + w15 + sigma0( w7)); + Round(b, c, d, e, f, g, h, a, 0x76f988da831153b5ull, w7 += sigma1( w5) + w0 + sigma0( w8)); + Round(a, b, c, d, e, f, g, h, 0x983e5152ee66dfabull, w8 += sigma1( w6) + w1 + sigma0( w9)); + Round(h, a, b, c, d, e, f, g, 0xa831c66d2db43210ull, w9 += sigma1( w7) + w2 + sigma0(w10)); + Round(g, h, a, b, c, d, e, f, 0xb00327c898fb213full, w10 += sigma1( w8) + w3 + sigma0(w11)); + Round(f, g, h, a, b, c, d, e, 0xbf597fc7beef0ee4ull, w11 += sigma1( w9) + w4 + sigma0(w12)); + Round(e, f, g, h, a, b, c, d, 0xc6e00bf33da88fc2ull, w12 += sigma1(w10) + w5 + sigma0(w13)); + Round(d, e, f, g, h, a, b, c, 0xd5a79147930aa725ull, w13 += sigma1(w11) + w6 + sigma0(w14)); + Round(c, d, e, f, g, h, a, b, 0x06ca6351e003826full, w14 += sigma1(w12) + w7 + sigma0(w15)); + Round(b, c, d, e, f, g, h, a, 0x142929670a0e6e70ull, w15 += sigma1(w13) + w8 + sigma0( w0)); + + Round(a, b, c, d, e, f, g, h, 0x27b70a8546d22ffcull, w0 += sigma1(w14) + w9 + sigma0( w1)); + Round(h, a, b, c, d, e, f, g, 0x2e1b21385c26c926ull, w1 += sigma1(w15) + w10 + sigma0( w2)); + Round(g, h, a, b, c, d, e, f, 0x4d2c6dfc5ac42aedull, w2 += sigma1( w0) + w11 + sigma0( w3)); + Round(f, g, h, a, b, c, d, e, 0x53380d139d95b3dfull, w3 += sigma1( w1) + w12 + sigma0( w4)); + Round(e, f, g, h, a, b, c, d, 0x650a73548baf63deull, w4 += sigma1( w2) + w13 + sigma0( w5)); + Round(d, e, f, g, h, a, b, c, 0x766a0abb3c77b2a8ull, w5 += sigma1( w3) + w14 + sigma0( w6)); + Round(c, d, e, f, g, h, a, b, 0x81c2c92e47edaee6ull, w6 += sigma1( w4) + w15 + sigma0( w7)); + Round(b, c, d, e, f, g, h, a, 0x92722c851482353bull, w7 += sigma1( w5) + w0 + sigma0( w8)); + Round(a, b, c, d, e, f, g, h, 0xa2bfe8a14cf10364ull, w8 += sigma1( w6) + w1 + sigma0( w9)); + Round(h, a, b, c, d, e, f, g, 0xa81a664bbc423001ull, w9 += sigma1( w7) + w2 + sigma0(w10)); + Round(g, h, a, b, c, d, e, f, 0xc24b8b70d0f89791ull, w10 += sigma1( w8) + w3 + sigma0(w11)); + Round(f, g, h, a, b, c, d, e, 0xc76c51a30654be30ull, w11 += sigma1( w9) + w4 + sigma0(w12)); + Round(e, f, g, h, a, b, c, d, 0xd192e819d6ef5218ull, w12 += sigma1(w10) + w5 + sigma0(w13)); + Round(d, e, f, g, h, a, b, c, 0xd69906245565a910ull, w13 += sigma1(w11) + w6 + sigma0(w14)); + Round(c, d, e, f, g, h, a, b, 0xf40e35855771202aull, w14 += sigma1(w12) + w7 + sigma0(w15)); + Round(b, c, d, e, f, g, h, a, 0x106aa07032bbd1b8ull, w15 += sigma1(w13) + w8 + sigma0( w0)); + + Round(a, b, c, d, e, f, g, h, 0x19a4c116b8d2d0c8ull, w0 += sigma1(w14) + w9 + sigma0( w1)); + Round(h, a, b, c, d, e, f, g, 0x1e376c085141ab53ull, w1 += sigma1(w15) + w10 + sigma0( w2)); + Round(g, h, a, b, c, d, e, f, 0x2748774cdf8eeb99ull, w2 += sigma1( w0) + w11 + sigma0( w3)); + Round(f, g, h, a, b, c, d, e, 0x34b0bcb5e19b48a8ull, w3 += sigma1( w1) + w12 + sigma0( w4)); + Round(e, f, g, h, a, b, c, d, 0x391c0cb3c5c95a63ull, w4 += sigma1( w2) + w13 + sigma0( w5)); + Round(d, e, f, g, h, a, b, c, 0x4ed8aa4ae3418acbull, w5 += sigma1( w3) + w14 + sigma0( w6)); + Round(c, d, e, f, g, h, a, b, 0x5b9cca4f7763e373ull, w6 += sigma1( w4) + w15 + sigma0( w7)); + Round(b, c, d, e, f, g, h, a, 0x682e6ff3d6b2b8a3ull, w7 += sigma1( w5) + w0 + sigma0( w8)); + Round(a, b, c, d, e, f, g, h, 0x748f82ee5defb2fcull, w8 += sigma1( w6) + w1 + sigma0( w9)); + Round(h, a, b, c, d, e, f, g, 0x78a5636f43172f60ull, w9 += sigma1( w7) + w2 + sigma0(w10)); + Round(g, h, a, b, c, d, e, f, 0x84c87814a1f0ab72ull, w10 += sigma1( w8) + w3 + sigma0(w11)); + Round(f, g, h, a, b, c, d, e, 0x8cc702081a6439ecull, w11 += sigma1( w9) + w4 + sigma0(w12)); + Round(e, f, g, h, a, b, c, d, 0x90befffa23631e28ull, w12 += sigma1(w10) + w5 + sigma0(w13)); + Round(d, e, f, g, h, a, b, c, 0xa4506cebde82bde9ull, w13 += sigma1(w11) + w6 + sigma0(w14)); + Round(c, d, e, f, g, h, a, b, 0xbef9a3f7b2c67915ull, w14 += sigma1(w12) + w7 + sigma0(w15)); + Round(b, c, d, e, f, g, h, a, 0xc67178f2e372532bull, w15 += sigma1(w13) + w8 + sigma0( w0)); + + Round(a, b, c, d, e, f, g, h, 0xca273eceea26619cull, w0 += sigma1(w14) + w9 + sigma0( w1)); + Round(h, a, b, c, d, e, f, g, 0xd186b8c721c0c207ull, w1 += sigma1(w15) + w10 + sigma0( w2)); + Round(g, h, a, b, c, d, e, f, 0xeada7dd6cde0eb1eull, w2 += sigma1( w0) + w11 + sigma0( w3)); + Round(f, g, h, a, b, c, d, e, 0xf57d4f7fee6ed178ull, w3 += sigma1( w1) + w12 + sigma0( w4)); + Round(e, f, g, h, a, b, c, d, 0x06f067aa72176fbaull, w4 += sigma1( w2) + w13 + sigma0( w5)); + Round(d, e, f, g, h, a, b, c, 0x0a637dc5a2c898a6ull, w5 += sigma1( w3) + w14 + sigma0( w6)); + Round(c, d, e, f, g, h, a, b, 0x113f9804bef90daeull, w6 += sigma1( w4) + w15 + sigma0( w7)); + Round(b, c, d, e, f, g, h, a, 0x1b710b35131c471bull, w7 += sigma1( w5) + w0 + sigma0( w8)); + Round(a, b, c, d, e, f, g, h, 0x28db77f523047d84ull, w8 += sigma1( w6) + w1 + sigma0( w9)); + Round(h, a, b, c, d, e, f, g, 0x32caab7b40c72493ull, w9 += sigma1( w7) + w2 + sigma0(w10)); + Round(g, h, a, b, c, d, e, f, 0x3c9ebe0a15c9bebcull, w10 += sigma1( w8) + w3 + sigma0(w11)); + Round(f, g, h, a, b, c, d, e, 0x431d67c49c100d4cull, w11 += sigma1( w9) + w4 + sigma0(w12)); + Round(e, f, g, h, a, b, c, d, 0x4cc5d4becb3e42b6ull, w12 += sigma1(w10) + w5 + sigma0(w13)); + Round(d, e, f, g, h, a, b, c, 0x597f299cfc657e2aull, w13 += sigma1(w11) + w6 + sigma0(w14)); + Round(c, d, e, f, g, h, a, b, 0x5fcb6fab3ad6faecull, w14 += sigma1(w12) + w7 + sigma0(w15)); + Round(b, c, d, e, f, g, h, a, 0x6c44198c4a475817ull, w15 += sigma1(w13) + w8 + sigma0( w0)); + + s[0] += a; + s[1] += b; + s[2] += c; + s[3] += d; + s[4] += e; + s[5] += f; + s[6] += g; + s[7] += h; +} + +} // namespace sha512 + +} // namespace + + +////// SHA-256 + +CSHA256::CSHA256() : bytes(0) { + sha256::Initialize(s); +} + +CSHA256& CSHA256::Write(const unsigned char *data, size_t len) { + const unsigned char *end = data + len; + size_t bufsize = bytes % 64; + if (bufsize && bufsize + len >= 64) { + // Fill the buffer, and process it. + memcpy(buf + bufsize, data, 64 - bufsize); + bytes += 64 - bufsize; + data += 64 - bufsize; + sha256::Transform(s, buf); + bufsize = 0; + } + while (end >= data + 64) { + // Process full chunks directly from the source. + sha256::Transform(s, data); + bytes += 64; + data += 64; + } + if (end > data) { + // Fill the buffer with what remains. + memcpy(buf + bufsize, data, end - data); + bytes += end - data; + } + return *this; +} + +void CSHA256::Finalize(unsigned char *hash) { + static const unsigned char pad[64] = {0x80}; + unsigned char sizedesc[8]; + WriteBE64(sizedesc, bytes << 3); + Write(pad, 1 + ((119 - (bytes % 64)) % 64)); + Write(sizedesc, 8); + WriteBE32(hash, s[0]); + WriteBE32(hash+4, s[1]); + WriteBE32(hash+8, s[2]); + WriteBE32(hash+12, s[3]); + WriteBE32(hash+16, s[4]); + WriteBE32(hash+20, s[5]); + WriteBE32(hash+24, s[6]); + WriteBE32(hash+28, s[7]); +} + +CSHA256& CSHA256::Reset() { + bytes = 0; + sha256::Initialize(s); + return *this; +} + +////// SHA-512 + +CSHA512::CSHA512() : bytes(0) { + sha512::Initialize(s); +} + +CSHA512& CSHA512::Write(const unsigned char *data, size_t len) { + const unsigned char *end = data + len; + size_t bufsize = bytes % 128; + if (bufsize && bufsize + len >= 128) { + // Fill the buffer, and process it. + memcpy(buf + bufsize, data, 128 - bufsize); + bytes += 128 - bufsize; + data += 128 - bufsize; + sha512::Transform(s, buf); + bufsize = 0; + } + while (end >= data + 128) { + // Process full chunks directly from the source. + sha512::Transform(s, data); + data += 128; + bytes += 128; + } + if (end > data) { + // Fill the buffer with what remains. + memcpy(buf + bufsize, data, end - data); + bytes += end - data; + } + return *this; +} + +void CSHA512::Finalize(unsigned char *hash) { + static const unsigned char pad[128] = {0x80}; + unsigned char sizedesc[16] = {0x00}; + WriteBE64(sizedesc+8, bytes << 3); + Write(pad, 1 + ((239 - (bytes % 128)) % 128)); + Write(sizedesc, 16); + WriteBE64(hash, s[0]); + WriteBE64(hash+8, s[1]); + WriteBE64(hash+16, s[2]); + WriteBE64(hash+24, s[3]); + WriteBE64(hash+32, s[4]); + WriteBE64(hash+40, s[5]); + WriteBE64(hash+48, s[6]); + WriteBE64(hash+56, s[7]); +} + +CSHA512& CSHA512::Reset() { + bytes = 0; + sha512::Initialize(s); + return *this; +} + +////// HMAC-SHA-512 + +CHMAC_SHA512::CHMAC_SHA512(const unsigned char *key, size_t keylen) { + unsigned char rkey[128]; + if (keylen <= 128) { + memcpy(rkey, key, keylen); + memset(rkey + keylen, 0, 128 - keylen); + } else { + CSHA512().Write(key, keylen).Finalize(rkey); + memset(rkey + 64, 0, 64); + } + + for (int n=0; n<128; n++) + rkey[n] ^= 0x5c; + outer.Write(rkey, 128); + + for (int n=0; n<128; n++) + rkey[n] ^= 0x5c ^ 0x36; + inner.Write(rkey, 128); +} + +void CHMAC_SHA512::Finalize(unsigned char *hash) { + unsigned char temp[64]; + inner.Finalize(temp); + outer.Write(temp, 64).Finalize(hash); +} |