sha512.cpp (5717B)
1 #include <cstring> 2 #include <fstream> 3 #include "sha512.h" 4 5 const unsigned long long SHA512::sha512_k[80] = //ULL = uint64 6 {0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 7 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, 8 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 9 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 10 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 11 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, 12 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 13 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, 14 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 15 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 16 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 17 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, 18 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 19 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, 20 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 21 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 22 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 23 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, 24 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 25 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, 26 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 27 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 28 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 29 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, 30 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 31 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, 32 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 33 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 34 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 35 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, 36 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 37 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, 38 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 39 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 40 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 41 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, 42 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 43 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, 44 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 45 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL}; 46 47 void SHA512::transform(const unsigned char *message, unsigned int block_nb) 48 { 49 uint64 w[80]; 50 uint64 wv[8]; 51 uint64 t1, t2; 52 const unsigned char *sub_block; 53 int i, j; 54 for (i = 0; i < (int) block_nb; i++) { 55 sub_block = message + (i << 7); 56 for (j = 0; j < 16; j++) { 57 SHA2_PACK64(&sub_block[j << 3], &w[j]); 58 } 59 for (j = 16; j < 80; j++) { 60 w[j] = SHA512_F4(w[j - 2]) + w[j - 7] + SHA512_F3(w[j - 15]) + w[j - 16]; 61 } 62 for (j = 0; j < 8; j++) { 63 wv[j] = m_h[j]; 64 } 65 for (j = 0; j < 80; j++) { 66 t1 = wv[7] + SHA512_F2(wv[4]) + SHA2_CH(wv[4], wv[5], wv[6]) 67 + sha512_k[j] + w[j]; 68 t2 = SHA512_F1(wv[0]) + SHA2_MAJ(wv[0], wv[1], wv[2]); 69 wv[7] = wv[6]; 70 wv[6] = wv[5]; 71 wv[5] = wv[4]; 72 wv[4] = wv[3] + t1; 73 wv[3] = wv[2]; 74 wv[2] = wv[1]; 75 wv[1] = wv[0]; 76 wv[0] = t1 + t2; 77 } 78 for (j = 0; j < 8; j++) { 79 m_h[j] += wv[j]; 80 } 81 82 } 83 } 84 85 void SHA512::init() 86 { 87 m_h[0] = 0x6a09e667f3bcc908ULL; 88 m_h[1] = 0xbb67ae8584caa73bULL; 89 m_h[2] = 0x3c6ef372fe94f82bULL; 90 m_h[3] = 0xa54ff53a5f1d36f1ULL; 91 m_h[4] = 0x510e527fade682d1ULL; 92 m_h[5] = 0x9b05688c2b3e6c1fULL; 93 m_h[6] = 0x1f83d9abfb41bd6bULL; 94 m_h[7] = 0x5be0cd19137e2179ULL; 95 m_len = 0; 96 m_tot_len = 0; 97 } 98 99 void SHA512::update(const unsigned char *message, unsigned int len) 100 { 101 unsigned int block_nb; 102 unsigned int new_len, rem_len, tmp_len; 103 const unsigned char *shifted_message; 104 tmp_len = SHA384_512_BLOCK_SIZE - m_len; 105 rem_len = len < tmp_len ? len : tmp_len; 106 memcpy(&m_block[m_len], message, rem_len); 107 if (m_len + len < SHA384_512_BLOCK_SIZE) { 108 m_len += len; 109 return; 110 } 111 new_len = len - rem_len; 112 block_nb = new_len / SHA384_512_BLOCK_SIZE; 113 shifted_message = message + rem_len; 114 transform(m_block, 1); 115 transform(shifted_message, block_nb); 116 rem_len = new_len % SHA384_512_BLOCK_SIZE; 117 memcpy(m_block, &shifted_message[block_nb << 7], rem_len); 118 m_len = rem_len; 119 m_tot_len += (block_nb + 1) << 7; 120 } 121 122 void SHA512::final(unsigned char *digest) 123 { 124 unsigned int block_nb; 125 unsigned int pm_len; 126 unsigned int len_b; 127 int i; 128 block_nb = 1 + ((SHA384_512_BLOCK_SIZE - 17) 129 < (m_len % SHA384_512_BLOCK_SIZE)); 130 len_b = (m_tot_len + m_len) << 3; 131 pm_len = block_nb << 7; 132 memset(m_block + m_len, 0, pm_len - m_len); 133 m_block[m_len] = 0x80; 134 SHA2_UNPACK32(len_b, m_block + pm_len - 4); 135 transform(m_block, block_nb); 136 for (i = 0 ; i < 8; i++) { 137 SHA2_UNPACK64(m_h[i], &digest[i << 3]); 138 } 139 } 140 141 std::string sha512(std::string input) 142 { 143 unsigned char digest[SHA512::DIGEST_SIZE]; 144 memset(digest,0,SHA512::DIGEST_SIZE); 145 SHA512 ctx = SHA512(); 146 ctx.init(); 147 ctx.update((unsigned char*)input.c_str(), input.length()); 148 ctx.final(digest); 149 150 char buf[2*SHA512::DIGEST_SIZE+1]; 151 buf[2*SHA512::DIGEST_SIZE] = 0; 152 for (int i = 0; i < SHA512::DIGEST_SIZE; i++) 153 sprintf(buf+i*2, "%02x", digest[i]); 154 return std::string(buf); 155 }