File: cryptonite_sha512.c

package info (click to toggle)
haskell-cryptonite 0.26-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 3,160 kB
  • sloc: ansic: 21,001; haskell: 16,572; makefile: 8
file content (267 lines) | stat: -rw-r--r-- 9,123 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
/*
 * Copyright (C) 2006-2009 Vincent Hanquez <vincent@snarc.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <string.h>
#include "cryptonite_bitfn.h"
#include "cryptonite_align.h"
#include "cryptonite_sha512.h"

void cryptonite_sha384_init(struct sha512_ctx *ctx)
{
	memset(ctx, 0, sizeof(*ctx));

	ctx->h[0] = 0xcbbb9d5dc1059ed8ULL;
	ctx->h[1] = 0x629a292a367cd507ULL;
	ctx->h[2] = 0x9159015a3070dd17ULL;
	ctx->h[3] = 0x152fecd8f70e5939ULL;
	ctx->h[4] = 0x67332667ffc00b31ULL;
	ctx->h[5] = 0x8eb44a8768581511ULL;
	ctx->h[6] = 0xdb0c2e0d64f98fa7ULL;
	ctx->h[7] = 0x47b5481dbefa4fa4ULL;
}

void cryptonite_sha512_init(struct sha512_ctx *ctx)
{
	memset(ctx, 0, sizeof(*ctx));

	ctx->h[0] = 0x6a09e667f3bcc908ULL;
	ctx->h[1] = 0xbb67ae8584caa73bULL;
	ctx->h[2] = 0x3c6ef372fe94f82bULL;
	ctx->h[3] = 0xa54ff53a5f1d36f1ULL;
	ctx->h[4] = 0x510e527fade682d1ULL;
	ctx->h[5] = 0x9b05688c2b3e6c1fULL;
	ctx->h[6] = 0x1f83d9abfb41bd6bULL;
	ctx->h[7] = 0x5be0cd19137e2179ULL;
}

/* 232 times the cube root of the first 64 primes 2..311 */
static const uint64_t k[] = {
	0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
	0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
	0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
	0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
	0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
	0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
	0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
	0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
	0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
	0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
	0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
	0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
	0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
	0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
	0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
	0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
	0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
	0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
	0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
	0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
	0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
	0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
	0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
	0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
	0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
	0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
	0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
};

#define e0(x)       (ror64(x, 28) ^ ror64(x, 34) ^ ror64(x, 39))
#define e1(x)       (ror64(x, 14) ^ ror64(x, 18) ^ ror64(x, 41))
#define s0(x)       (ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7))
#define s1(x)       (ror64(x, 19) ^ ror64(x, 61) ^ (x >> 6))

static void sha512_do_chunk(struct sha512_ctx *ctx, uint64_t *buf)
{
	uint64_t a, b, c, d, e, f, g, h, t1, t2;
	int i;
	uint64_t w[80];

	cpu_to_be64_array(w, buf, 16);

	for (i = 16; i < 80; i++)
		w[i] = s1(w[i - 2]) + w[i - 7] + s0(w[i - 15]) + w[i - 16];

	a = ctx->h[0]; b = ctx->h[1]; c = ctx->h[2]; d = ctx->h[3];
	e = ctx->h[4]; f = ctx->h[5]; g = ctx->h[6]; h = ctx->h[7];

#define R(a, b, c, d, e, f, g, h, k, w)			\
	t1 = h + e1(e) + (g ^ (e & (f ^ g))) + k + w;	\
	t2 = e0(a) + ((a & b) | (c & (a | b)));		\
	d += t1;					\
	h = t1 + t2

	for (i = 0; i < 80; i += 8) {
		R(a, b, c, d, e, f, g, h, k[i + 0], w[i + 0]);
		R(h, a, b, c, d, e, f, g, k[i + 1], w[i + 1]);
		R(g, h, a, b, c, d, e, f, k[i + 2], w[i + 2]);
		R(f, g, h, a, b, c, d, e, k[i + 3], w[i + 3]);
		R(e, f, g, h, a, b, c, d, k[i + 4], w[i + 4]);
		R(d, e, f, g, h, a, b, c, k[i + 5], w[i + 5]);
		R(c, d, e, f, g, h, a, b, k[i + 6], w[i + 6]);
		R(b, c, d, e, f, g, h, a, k[i + 7], w[i + 7]);
	}

#undef R

	ctx->h[0] += a; ctx->h[1] += b; ctx->h[2] += c; ctx->h[3] += d;
	ctx->h[4] += e; ctx->h[5] += f; ctx->h[6] += g; ctx->h[7] += h;
}

void cryptonite_sha384_update(struct sha384_ctx *ctx, const uint8_t *data, uint32_t len)
{
	return cryptonite_sha512_update(ctx, data, len);
}

void cryptonite_sha512_update(struct sha512_ctx *ctx, const uint8_t *data, uint32_t len)
{
	unsigned int index, to_fill;

	/* check for partial buffer */
	index = (unsigned int) (ctx->sz[0] & 0x7f);
	to_fill = 128 - index;

	ctx->sz[0] += len;
	if (ctx->sz[0] < len)
		ctx->sz[1]++;

	/* process partial buffer if there's enough data to make a block */
	if (index && len >= to_fill) {
		memcpy(ctx->buf + index, data, to_fill);
		sha512_do_chunk(ctx, (uint64_t *) ctx->buf);
		len -= to_fill;
		data += to_fill;
		index = 0;
	}

	if (need_alignment(data, 8)) {
		uint64_t tramp[16];
		ASSERT_ALIGNMENT(tramp, 8);
		for (; len >= 128; len -= 128, data += 128) {
			memcpy(tramp, data, 128);
			sha512_do_chunk(ctx, tramp);
		}
	} else {
		/* process as much 128-block as possible */
		for (; len >= 128; len -= 128, data += 128)
			sha512_do_chunk(ctx, (uint64_t *) data);
	}

	/* append data into buf */
	if (len)
		memcpy(ctx->buf + index, data, len);
}

void cryptonite_sha384_finalize(struct sha384_ctx *ctx, uint8_t *out)
{
	uint8_t intermediate[SHA512_DIGEST_SIZE];

	cryptonite_sha512_finalize(ctx, intermediate);
	memcpy(out, intermediate, SHA384_DIGEST_SIZE);
}

void cryptonite_sha512_finalize(struct sha512_ctx *ctx, uint8_t *out)
{
	static uint8_t padding[128] = { 0x80, };
	uint32_t i, index, padlen;
	uint64_t bits[2];

	/* cpu -> big endian */
	bits[0] = cpu_to_be64((ctx->sz[1] << 3 | ctx->sz[0] >> 61));
	bits[1] = cpu_to_be64((ctx->sz[0] << 3));

	/* pad out to 56 */
	index = (unsigned int) (ctx->sz[0] & 0x7f);
	padlen = (index < 112) ? (112 - index) : ((128 + 112) - index);
	cryptonite_sha512_update(ctx, padding, padlen);

	/* append length */
	cryptonite_sha512_update(ctx, (uint8_t *) bits, sizeof(bits));

	/* store to digest */
	for (i = 0; i < 8; i++)
		store_be64(out+8*i, ctx->h[i]);
}

#include <stdio.h>

void cryptonite_sha512t_init(struct sha512_ctx *ctx, uint32_t hashlen)
{
	memset(ctx, 0, sizeof(*ctx));
	if (hashlen >= 512)
		return;
	switch (hashlen) {
	case 224:
		ctx->h[0] = 0x8c3d37c819544da2ULL;
		ctx->h[1] = 0x73e1996689dcd4d6ULL;
		ctx->h[2] = 0x1dfab7ae32ff9c82ULL;
		ctx->h[3] = 0x679dd514582f9fcfULL;
		ctx->h[4] = 0x0f6d2b697bd44da8ULL;
		ctx->h[5] = 0x77e36f7304c48942ULL;
		ctx->h[6] = 0x3f9d85a86a1d36c8ULL;
		ctx->h[7] = 0x1112e6ad91d692a1ULL;
		break;
	case 256:
		ctx->h[0] = 0x22312194fc2bf72cULL;
		ctx->h[1] = 0x9f555fa3c84c64c2ULL;
		ctx->h[2] = 0x2393b86b6f53b151ULL;
		ctx->h[3] = 0x963877195940eabdULL;
		ctx->h[4] = 0x96283ee2a88effe3ULL;
		ctx->h[5] = 0xbe5e1e2553863992ULL;
		ctx->h[6] = 0x2b0199fc2c85b8aaULL;
		ctx->h[7] = 0x0eb72ddc81c52ca2ULL;
		break;
	default: {
		char buf[8+4];
		uint8_t out[64];
		int i;

		cryptonite_sha512_init(ctx);
		for (i = 0; i < 8; i++)
			ctx->h[i] ^= 0xa5a5a5a5a5a5a5a5ULL;

		i = sprintf(buf, "SHA-512/%d", hashlen);
		cryptonite_sha512_update(ctx, (uint8_t *) buf, i);
		cryptonite_sha512_finalize(ctx, out);

		/* re-init the context, otherwise len is changed */
		memset(ctx, 0, sizeof(*ctx));
		for (i = 0; i < 8; i++)
			ctx->h[i] = cpu_to_be64(((uint64_t *) out)[i]);
		}
	}
}

void cryptonite_sha512t_update(struct sha512_ctx *ctx, const uint8_t *data, uint32_t len)
{
	return cryptonite_sha512_update(ctx, data, len);
}

void cryptonite_sha512t_finalize(struct sha512_ctx *ctx, uint32_t hashlen, uint8_t *out)
{
	uint8_t intermediate[SHA512_DIGEST_SIZE];

	cryptonite_sha512_finalize(ctx, intermediate);
	memcpy(out, intermediate, hashlen / 8);
}