Annotation of src/usr.bin/ssh/blocks.c, Revision 1.1
1.1 ! markus 1: /* $OpenBSD: */
! 2:
! 3: /* Public Domain, from supercop-20130419/crypto_hashblocks/sha512/ref/blocks.c */
! 4:
! 5: #include "crypto_api.h"
! 6:
! 7: typedef unsigned long long uint64;
! 8:
! 9: static uint64 load_bigendian(const unsigned char *x)
! 10: {
! 11: return
! 12: (uint64) (x[7]) \
! 13: | (((uint64) (x[6])) << 8) \
! 14: | (((uint64) (x[5])) << 16) \
! 15: | (((uint64) (x[4])) << 24) \
! 16: | (((uint64) (x[3])) << 32) \
! 17: | (((uint64) (x[2])) << 40) \
! 18: | (((uint64) (x[1])) << 48) \
! 19: | (((uint64) (x[0])) << 56)
! 20: ;
! 21: }
! 22:
! 23: static void store_bigendian(unsigned char *x,uint64 u)
! 24: {
! 25: x[7] = u; u >>= 8;
! 26: x[6] = u; u >>= 8;
! 27: x[5] = u; u >>= 8;
! 28: x[4] = u; u >>= 8;
! 29: x[3] = u; u >>= 8;
! 30: x[2] = u; u >>= 8;
! 31: x[1] = u; u >>= 8;
! 32: x[0] = u;
! 33: }
! 34:
! 35: #define SHR(x,c) ((x) >> (c))
! 36: #define ROTR(x,c) (((x) >> (c)) | ((x) << (64 - (c))))
! 37:
! 38: #define Ch(x,y,z) ((x & y) ^ (~x & z))
! 39: #define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z))
! 40: #define Sigma0(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
! 41: #define Sigma1(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
! 42: #define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x,7))
! 43: #define sigma1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x,6))
! 44:
! 45: #define M(w0,w14,w9,w1) w0 = sigma1(w14) + w9 + sigma0(w1) + w0;
! 46:
! 47: #define EXPAND \
! 48: M(w0 ,w14,w9 ,w1 ) \
! 49: M(w1 ,w15,w10,w2 ) \
! 50: M(w2 ,w0 ,w11,w3 ) \
! 51: M(w3 ,w1 ,w12,w4 ) \
! 52: M(w4 ,w2 ,w13,w5 ) \
! 53: M(w5 ,w3 ,w14,w6 ) \
! 54: M(w6 ,w4 ,w15,w7 ) \
! 55: M(w7 ,w5 ,w0 ,w8 ) \
! 56: M(w8 ,w6 ,w1 ,w9 ) \
! 57: M(w9 ,w7 ,w2 ,w10) \
! 58: M(w10,w8 ,w3 ,w11) \
! 59: M(w11,w9 ,w4 ,w12) \
! 60: M(w12,w10,w5 ,w13) \
! 61: M(w13,w11,w6 ,w14) \
! 62: M(w14,w12,w7 ,w15) \
! 63: M(w15,w13,w8 ,w0 )
! 64:
! 65: #define F(w,k) \
! 66: T1 = h + Sigma1(e) + Ch(e,f,g) + k + w; \
! 67: T2 = Sigma0(a) + Maj(a,b,c); \
! 68: h = g; \
! 69: g = f; \
! 70: f = e; \
! 71: e = d + T1; \
! 72: d = c; \
! 73: c = b; \
! 74: b = a; \
! 75: a = T1 + T2;
! 76:
! 77: int crypto_hashblocks_sha512(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen)
! 78: {
! 79: uint64 state[8];
! 80: uint64 a;
! 81: uint64 b;
! 82: uint64 c;
! 83: uint64 d;
! 84: uint64 e;
! 85: uint64 f;
! 86: uint64 g;
! 87: uint64 h;
! 88: uint64 T1;
! 89: uint64 T2;
! 90:
! 91: a = load_bigendian(statebytes + 0); state[0] = a;
! 92: b = load_bigendian(statebytes + 8); state[1] = b;
! 93: c = load_bigendian(statebytes + 16); state[2] = c;
! 94: d = load_bigendian(statebytes + 24); state[3] = d;
! 95: e = load_bigendian(statebytes + 32); state[4] = e;
! 96: f = load_bigendian(statebytes + 40); state[5] = f;
! 97: g = load_bigendian(statebytes + 48); state[6] = g;
! 98: h = load_bigendian(statebytes + 56); state[7] = h;
! 99:
! 100: while (inlen >= 128) {
! 101: uint64 w0 = load_bigendian(in + 0);
! 102: uint64 w1 = load_bigendian(in + 8);
! 103: uint64 w2 = load_bigendian(in + 16);
! 104: uint64 w3 = load_bigendian(in + 24);
! 105: uint64 w4 = load_bigendian(in + 32);
! 106: uint64 w5 = load_bigendian(in + 40);
! 107: uint64 w6 = load_bigendian(in + 48);
! 108: uint64 w7 = load_bigendian(in + 56);
! 109: uint64 w8 = load_bigendian(in + 64);
! 110: uint64 w9 = load_bigendian(in + 72);
! 111: uint64 w10 = load_bigendian(in + 80);
! 112: uint64 w11 = load_bigendian(in + 88);
! 113: uint64 w12 = load_bigendian(in + 96);
! 114: uint64 w13 = load_bigendian(in + 104);
! 115: uint64 w14 = load_bigendian(in + 112);
! 116: uint64 w15 = load_bigendian(in + 120);
! 117:
! 118: F(w0 ,0x428a2f98d728ae22ULL)
! 119: F(w1 ,0x7137449123ef65cdULL)
! 120: F(w2 ,0xb5c0fbcfec4d3b2fULL)
! 121: F(w3 ,0xe9b5dba58189dbbcULL)
! 122: F(w4 ,0x3956c25bf348b538ULL)
! 123: F(w5 ,0x59f111f1b605d019ULL)
! 124: F(w6 ,0x923f82a4af194f9bULL)
! 125: F(w7 ,0xab1c5ed5da6d8118ULL)
! 126: F(w8 ,0xd807aa98a3030242ULL)
! 127: F(w9 ,0x12835b0145706fbeULL)
! 128: F(w10,0x243185be4ee4b28cULL)
! 129: F(w11,0x550c7dc3d5ffb4e2ULL)
! 130: F(w12,0x72be5d74f27b896fULL)
! 131: F(w13,0x80deb1fe3b1696b1ULL)
! 132: F(w14,0x9bdc06a725c71235ULL)
! 133: F(w15,0xc19bf174cf692694ULL)
! 134:
! 135: EXPAND
! 136:
! 137: F(w0 ,0xe49b69c19ef14ad2ULL)
! 138: F(w1 ,0xefbe4786384f25e3ULL)
! 139: F(w2 ,0x0fc19dc68b8cd5b5ULL)
! 140: F(w3 ,0x240ca1cc77ac9c65ULL)
! 141: F(w4 ,0x2de92c6f592b0275ULL)
! 142: F(w5 ,0x4a7484aa6ea6e483ULL)
! 143: F(w6 ,0x5cb0a9dcbd41fbd4ULL)
! 144: F(w7 ,0x76f988da831153b5ULL)
! 145: F(w8 ,0x983e5152ee66dfabULL)
! 146: F(w9 ,0xa831c66d2db43210ULL)
! 147: F(w10,0xb00327c898fb213fULL)
! 148: F(w11,0xbf597fc7beef0ee4ULL)
! 149: F(w12,0xc6e00bf33da88fc2ULL)
! 150: F(w13,0xd5a79147930aa725ULL)
! 151: F(w14,0x06ca6351e003826fULL)
! 152: F(w15,0x142929670a0e6e70ULL)
! 153:
! 154: EXPAND
! 155:
! 156: F(w0 ,0x27b70a8546d22ffcULL)
! 157: F(w1 ,0x2e1b21385c26c926ULL)
! 158: F(w2 ,0x4d2c6dfc5ac42aedULL)
! 159: F(w3 ,0x53380d139d95b3dfULL)
! 160: F(w4 ,0x650a73548baf63deULL)
! 161: F(w5 ,0x766a0abb3c77b2a8ULL)
! 162: F(w6 ,0x81c2c92e47edaee6ULL)
! 163: F(w7 ,0x92722c851482353bULL)
! 164: F(w8 ,0xa2bfe8a14cf10364ULL)
! 165: F(w9 ,0xa81a664bbc423001ULL)
! 166: F(w10,0xc24b8b70d0f89791ULL)
! 167: F(w11,0xc76c51a30654be30ULL)
! 168: F(w12,0xd192e819d6ef5218ULL)
! 169: F(w13,0xd69906245565a910ULL)
! 170: F(w14,0xf40e35855771202aULL)
! 171: F(w15,0x106aa07032bbd1b8ULL)
! 172:
! 173: EXPAND
! 174:
! 175: F(w0 ,0x19a4c116b8d2d0c8ULL)
! 176: F(w1 ,0x1e376c085141ab53ULL)
! 177: F(w2 ,0x2748774cdf8eeb99ULL)
! 178: F(w3 ,0x34b0bcb5e19b48a8ULL)
! 179: F(w4 ,0x391c0cb3c5c95a63ULL)
! 180: F(w5 ,0x4ed8aa4ae3418acbULL)
! 181: F(w6 ,0x5b9cca4f7763e373ULL)
! 182: F(w7 ,0x682e6ff3d6b2b8a3ULL)
! 183: F(w8 ,0x748f82ee5defb2fcULL)
! 184: F(w9 ,0x78a5636f43172f60ULL)
! 185: F(w10,0x84c87814a1f0ab72ULL)
! 186: F(w11,0x8cc702081a6439ecULL)
! 187: F(w12,0x90befffa23631e28ULL)
! 188: F(w13,0xa4506cebde82bde9ULL)
! 189: F(w14,0xbef9a3f7b2c67915ULL)
! 190: F(w15,0xc67178f2e372532bULL)
! 191:
! 192: EXPAND
! 193:
! 194: F(w0 ,0xca273eceea26619cULL)
! 195: F(w1 ,0xd186b8c721c0c207ULL)
! 196: F(w2 ,0xeada7dd6cde0eb1eULL)
! 197: F(w3 ,0xf57d4f7fee6ed178ULL)
! 198: F(w4 ,0x06f067aa72176fbaULL)
! 199: F(w5 ,0x0a637dc5a2c898a6ULL)
! 200: F(w6 ,0x113f9804bef90daeULL)
! 201: F(w7 ,0x1b710b35131c471bULL)
! 202: F(w8 ,0x28db77f523047d84ULL)
! 203: F(w9 ,0x32caab7b40c72493ULL)
! 204: F(w10,0x3c9ebe0a15c9bebcULL)
! 205: F(w11,0x431d67c49c100d4cULL)
! 206: F(w12,0x4cc5d4becb3e42b6ULL)
! 207: F(w13,0x597f299cfc657e2aULL)
! 208: F(w14,0x5fcb6fab3ad6faecULL)
! 209: F(w15,0x6c44198c4a475817ULL)
! 210:
! 211: a += state[0];
! 212: b += state[1];
! 213: c += state[2];
! 214: d += state[3];
! 215: e += state[4];
! 216: f += state[5];
! 217: g += state[6];
! 218: h += state[7];
! 219:
! 220: state[0] = a;
! 221: state[1] = b;
! 222: state[2] = c;
! 223: state[3] = d;
! 224: state[4] = e;
! 225: state[5] = f;
! 226: state[6] = g;
! 227: state[7] = h;
! 228:
! 229: in += 128;
! 230: inlen -= 128;
! 231: }
! 232:
! 233: store_bigendian(statebytes + 0,state[0]);
! 234: store_bigendian(statebytes + 8,state[1]);
! 235: store_bigendian(statebytes + 16,state[2]);
! 236: store_bigendian(statebytes + 24,state[3]);
! 237: store_bigendian(statebytes + 32,state[4]);
! 238: store_bigendian(statebytes + 40,state[5]);
! 239: store_bigendian(statebytes + 48,state[6]);
! 240: store_bigendian(statebytes + 56,state[7]);
! 241:
! 242: return inlen;
! 243: }
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