morpheus-base

morpheus base system
git clone git://git.2f30.org/morpheus-base.git
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sha512.c (4960B)


      1 /* public domain sha256 implementation based on fips180-3 */
      2 
      3 #include <ctype.h>
      4 #include <stdint.h>
      5 #include <stdio.h>
      6 #include <stdlib.h>
      7 #include <string.h>
      8 
      9 #include "../sha512.h"
     10 
     11 static uint64_t ror(uint64_t n, int k) { return (n >> k) | (n << (64-k)); }
     12 #define Ch(x,y,z)  (z ^ (x & (y ^ z)))
     13 #define Maj(x,y,z) ((x & y) | (z & (x | y)))
     14 #define S0(x)      (ror(x,28) ^ ror(x,34) ^ ror(x,39))
     15 #define S1(x)      (ror(x,14) ^ ror(x,18) ^ ror(x,41))
     16 #define R0(x)      (ror(x,1) ^ ror(x,8) ^ (x>>7))
     17 #define R1(x)      (ror(x,19) ^ ror(x,61) ^ (x>>6))
     18 
     19 static const uint64_t K[80] = {
     20 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
     21 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
     22 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
     23 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
     24 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
     25 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
     26 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
     27 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
     28 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
     29 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
     30 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
     31 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
     32 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
     33 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
     34 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
     35 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
     36 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
     37 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
     38 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
     39 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
     40 };
     41 
     42 static void
     43 processblock(struct sha512 *s, const uint8_t *buf)
     44 {
     45 	uint64_t W[80], t1, t2, a, b, c, d, e, f, g, h;
     46 	int i;
     47 
     48 	for (i = 0; i < 16; i++) {
     49 		W[i] = (uint64_t)buf[8*i]<<56;
     50 		W[i] |= (uint64_t)buf[8*i+1]<<48;
     51 		W[i] |= (uint64_t)buf[8*i+2]<<40;
     52 		W[i] |= (uint64_t)buf[8*i+3]<<32;
     53 		W[i] |= (uint64_t)buf[8*i+4]<<24;
     54 		W[i] |= (uint64_t)buf[8*i+5]<<16;
     55 		W[i] |= (uint64_t)buf[8*i+6]<<8;
     56 		W[i] |= buf[8*i+7];
     57 	}
     58 	for (; i < 80; i++)
     59 		W[i] = R1(W[i-2]) + W[i-7] + R0(W[i-15]) + W[i-16];
     60 	a = s->h[0];
     61 	b = s->h[1];
     62 	c = s->h[2];
     63 	d = s->h[3];
     64 	e = s->h[4];
     65 	f = s->h[5];
     66 	g = s->h[6];
     67 	h = s->h[7];
     68 	for (i = 0; i < 80; i++) {
     69 		t1 = h + S1(e) + Ch(e,f,g) + K[i] + W[i];
     70 		t2 = S0(a) + Maj(a,b,c);
     71 		h = g;
     72 		g = f;
     73 		f = e;
     74 		e = d + t1;
     75 		d = c;
     76 		c = b;
     77 		b = a;
     78 		a = t1 + t2;
     79 	}
     80 	s->h[0] += a;
     81 	s->h[1] += b;
     82 	s->h[2] += c;
     83 	s->h[3] += d;
     84 	s->h[4] += e;
     85 	s->h[5] += f;
     86 	s->h[6] += g;
     87 	s->h[7] += h;
     88 }
     89 
     90 static void
     91 pad(struct sha512 *s)
     92 {
     93 	unsigned r = s->len % 128;
     94 
     95 	s->buf[r++] = 0x80;
     96 	if (r > 112) {
     97 		memset(s->buf + r, 0, 128 - r);
     98 		r = 0;
     99 		processblock(s, s->buf);
    100 	}
    101 	memset(s->buf + r, 0, 120 - r);
    102 	s->len *= 8;
    103 	s->buf[120] = s->len >> 56;
    104 	s->buf[121] = s->len >> 48;
    105 	s->buf[122] = s->len >> 40;
    106 	s->buf[123] = s->len >> 32;
    107 	s->buf[124] = s->len >> 24;
    108 	s->buf[125] = s->len >> 16;
    109 	s->buf[126] = s->len >> 8;
    110 	s->buf[127] = s->len;
    111 	processblock(s, s->buf);
    112 }
    113 
    114 void
    115 sha512_init(void *ctx)
    116 {
    117 	struct sha512 *s = ctx;
    118 	s->len = 0;
    119 	s->h[0] = 0x6a09e667f3bcc908ULL;
    120 	s->h[1] = 0xbb67ae8584caa73bULL;
    121 	s->h[2] = 0x3c6ef372fe94f82bULL;
    122 	s->h[3] = 0xa54ff53a5f1d36f1ULL;
    123 	s->h[4] = 0x510e527fade682d1ULL;
    124 	s->h[5] = 0x9b05688c2b3e6c1fULL;
    125 	s->h[6] = 0x1f83d9abfb41bd6bULL;
    126 	s->h[7] = 0x5be0cd19137e2179ULL;
    127 }
    128 
    129 void
    130 sha512_sum(void *ctx, uint8_t md[SHA512_DIGEST_LENGTH])
    131 {
    132 	struct sha512 *s = ctx;
    133 	int i;
    134 
    135 	pad(s);
    136 	for (i = 0; i < 8; i++) {
    137 		md[8*i] = s->h[i] >> 56;
    138 		md[8*i+1] = s->h[i] >> 48;
    139 		md[8*i+2] = s->h[i] >> 40;
    140 		md[8*i+3] = s->h[i] >> 32;
    141 		md[8*i+4] = s->h[i] >> 24;
    142 		md[8*i+5] = s->h[i] >> 16;
    143 		md[8*i+6] = s->h[i] >> 8;
    144 		md[8*i+7] = s->h[i];
    145 	}
    146 }
    147 
    148 void
    149 sha512_update(void *ctx, const void *m, unsigned long len)
    150 {
    151 	struct sha512 *s = ctx;
    152 	const uint8_t *p = m;
    153 	unsigned r = s->len % 128;
    154 
    155 	s->len += len;
    156 	if (r) {
    157 		if (len < 128 - r) {
    158 			memcpy(s->buf + r, p, len);
    159 			return;
    160 		}
    161 		memcpy(s->buf + r, p, 128 - r);
    162 		len -= 128 - r;
    163 		p += 128 - r;
    164 		processblock(s, s->buf);
    165 	}
    166 	for (; len >= 128; len -= 128, p += 128)
    167 		processblock(s, p);
    168 	memcpy(s->buf, p, len);
    169 }