Note parent option 'verify' for 'do_verify'
[fio.git] / crc / sha256.c
CommitLineData
cd14cc10
JA
1/*
2 * Cryptographic API.
3 *
4 * SHA-256, as specified in
5 * http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf
6 *
7 * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
8 *
9 * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
10 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
11 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; either version 2 of the License, or (at your option)
16 * any later version.
17 *
18 */
19#include <string.h>
20#include <inttypes.h>
21#include <byteswap.h>
22#include <endian.h>
23
24#include "sha256.h"
25
26#if __BYTE_ORDER == __LITTLE_ENDIAN
27#define __be32_to_cpu(x) __bswap_32(x)
28#else
29#define __be32_to_cpu(x) (x)
30#endif
31
32#define SHA256_DIGEST_SIZE 32
33#define SHA256_HMAC_BLOCK_SIZE 64
34
35static inline uint32_t Ch(uint32_t x, uint32_t y, uint32_t z)
36{
37 return z ^ (x & (y ^ z));
38}
39
40static inline uint32_t Maj(uint32_t x, uint32_t y, uint32_t z)
41{
42 return (x & y) | (z & (x | y));
43}
44
45#define e0(x) (ror32(x, 2) ^ ror32(x,13) ^ ror32(x,22))
46#define e1(x) (ror32(x, 6) ^ ror32(x,11) ^ ror32(x,25))
47#define s0(x) (ror32(x, 7) ^ ror32(x,18) ^ (x >> 3))
48#define s1(x) (ror32(x,17) ^ ror32(x,19) ^ (x >> 10))
49
50#define H0 0x6a09e667
51#define H1 0xbb67ae85
52#define H2 0x3c6ef372
53#define H3 0xa54ff53a
54#define H4 0x510e527f
55#define H5 0x9b05688c
56#define H6 0x1f83d9ab
57#define H7 0x5be0cd19
58
59static inline uint32_t ror32(uint32_t word, unsigned int shift)
60{
61 return (word >> shift) | (word << (32 - shift));
62}
63
64static inline void LOAD_OP(int I, uint32_t *W, const uint8_t *input)
65{
66 W[I] = __be32_to_cpu(((uint32_t *)(input))[I]);
67}
68
69static inline void BLEND_OP(int I, uint32_t *W)
70{
71 W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
72}
73
74static void sha256_transform(uint32_t *state, const uint8_t *input)
75{
76 uint32_t a, b, c, d, e, f, g, h, t1, t2;
77 uint32_t W[64];
78 int i;
79
80 /* load the input */
81 for (i = 0; i < 16; i++)
82 LOAD_OP(i, W, input);
83
84 /* now blend */
85 for (i = 16; i < 64; i++)
86 BLEND_OP(i, W);
87
88 /* load the state into our registers */
89 a=state[0]; b=state[1]; c=state[2]; d=state[3];
90 e=state[4]; f=state[5]; g=state[6]; h=state[7];
91
92 /* now iterate */
93 t1 = h + e1(e) + Ch(e,f,g) + 0x428a2f98 + W[ 0];
94 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
95 t1 = g + e1(d) + Ch(d,e,f) + 0x71374491 + W[ 1];
96 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
97 t1 = f + e1(c) + Ch(c,d,e) + 0xb5c0fbcf + W[ 2];
98 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
99 t1 = e + e1(b) + Ch(b,c,d) + 0xe9b5dba5 + W[ 3];
100 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
101 t1 = d + e1(a) + Ch(a,b,c) + 0x3956c25b + W[ 4];
102 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
103 t1 = c + e1(h) + Ch(h,a,b) + 0x59f111f1 + W[ 5];
104 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
105 t1 = b + e1(g) + Ch(g,h,a) + 0x923f82a4 + W[ 6];
106 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
107 t1 = a + e1(f) + Ch(f,g,h) + 0xab1c5ed5 + W[ 7];
108 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
109
110 t1 = h + e1(e) + Ch(e,f,g) + 0xd807aa98 + W[ 8];
111 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
112 t1 = g + e1(d) + Ch(d,e,f) + 0x12835b01 + W[ 9];
113 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
114 t1 = f + e1(c) + Ch(c,d,e) + 0x243185be + W[10];
115 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
116 t1 = e + e1(b) + Ch(b,c,d) + 0x550c7dc3 + W[11];
117 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
118 t1 = d + e1(a) + Ch(a,b,c) + 0x72be5d74 + W[12];
119 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
120 t1 = c + e1(h) + Ch(h,a,b) + 0x80deb1fe + W[13];
121 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
122 t1 = b + e1(g) + Ch(g,h,a) + 0x9bdc06a7 + W[14];
123 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
124 t1 = a + e1(f) + Ch(f,g,h) + 0xc19bf174 + W[15];
125 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
126
127 t1 = h + e1(e) + Ch(e,f,g) + 0xe49b69c1 + W[16];
128 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
129 t1 = g + e1(d) + Ch(d,e,f) + 0xefbe4786 + W[17];
130 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
131 t1 = f + e1(c) + Ch(c,d,e) + 0x0fc19dc6 + W[18];
132 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
133 t1 = e + e1(b) + Ch(b,c,d) + 0x240ca1cc + W[19];
134 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
135 t1 = d + e1(a) + Ch(a,b,c) + 0x2de92c6f + W[20];
136 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
137 t1 = c + e1(h) + Ch(h,a,b) + 0x4a7484aa + W[21];
138 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
139 t1 = b + e1(g) + Ch(g,h,a) + 0x5cb0a9dc + W[22];
140 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
141 t1 = a + e1(f) + Ch(f,g,h) + 0x76f988da + W[23];
142 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
143
144 t1 = h + e1(e) + Ch(e,f,g) + 0x983e5152 + W[24];
145 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
146 t1 = g + e1(d) + Ch(d,e,f) + 0xa831c66d + W[25];
147 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
148 t1 = f + e1(c) + Ch(c,d,e) + 0xb00327c8 + W[26];
149 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
150 t1 = e + e1(b) + Ch(b,c,d) + 0xbf597fc7 + W[27];
151 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
152 t1 = d + e1(a) + Ch(a,b,c) + 0xc6e00bf3 + W[28];
153 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
154 t1 = c + e1(h) + Ch(h,a,b) + 0xd5a79147 + W[29];
155 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
156 t1 = b + e1(g) + Ch(g,h,a) + 0x06ca6351 + W[30];
157 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
158 t1 = a + e1(f) + Ch(f,g,h) + 0x14292967 + W[31];
159 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
160
161 t1 = h + e1(e) + Ch(e,f,g) + 0x27b70a85 + W[32];
162 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
163 t1 = g + e1(d) + Ch(d,e,f) + 0x2e1b2138 + W[33];
164 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
165 t1 = f + e1(c) + Ch(c,d,e) + 0x4d2c6dfc + W[34];
166 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
167 t1 = e + e1(b) + Ch(b,c,d) + 0x53380d13 + W[35];
168 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
169 t1 = d + e1(a) + Ch(a,b,c) + 0x650a7354 + W[36];
170 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
171 t1 = c + e1(h) + Ch(h,a,b) + 0x766a0abb + W[37];
172 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
173 t1 = b + e1(g) + Ch(g,h,a) + 0x81c2c92e + W[38];
174 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
175 t1 = a + e1(f) + Ch(f,g,h) + 0x92722c85 + W[39];
176 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
177
178 t1 = h + e1(e) + Ch(e,f,g) + 0xa2bfe8a1 + W[40];
179 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
180 t1 = g + e1(d) + Ch(d,e,f) + 0xa81a664b + W[41];
181 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
182 t1 = f + e1(c) + Ch(c,d,e) + 0xc24b8b70 + W[42];
183 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
184 t1 = e + e1(b) + Ch(b,c,d) + 0xc76c51a3 + W[43];
185 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
186 t1 = d + e1(a) + Ch(a,b,c) + 0xd192e819 + W[44];
187 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
188 t1 = c + e1(h) + Ch(h,a,b) + 0xd6990624 + W[45];
189 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
190 t1 = b + e1(g) + Ch(g,h,a) + 0xf40e3585 + W[46];
191 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
192 t1 = a + e1(f) + Ch(f,g,h) + 0x106aa070 + W[47];
193 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
194
195 t1 = h + e1(e) + Ch(e,f,g) + 0x19a4c116 + W[48];
196 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
197 t1 = g + e1(d) + Ch(d,e,f) + 0x1e376c08 + W[49];
198 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
199 t1 = f + e1(c) + Ch(c,d,e) + 0x2748774c + W[50];
200 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
201 t1 = e + e1(b) + Ch(b,c,d) + 0x34b0bcb5 + W[51];
202 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
203 t1 = d + e1(a) + Ch(a,b,c) + 0x391c0cb3 + W[52];
204 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
205 t1 = c + e1(h) + Ch(h,a,b) + 0x4ed8aa4a + W[53];
206 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
207 t1 = b + e1(g) + Ch(g,h,a) + 0x5b9cca4f + W[54];
208 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
209 t1 = a + e1(f) + Ch(f,g,h) + 0x682e6ff3 + W[55];
210 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
211
212 t1 = h + e1(e) + Ch(e,f,g) + 0x748f82ee + W[56];
213 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
214 t1 = g + e1(d) + Ch(d,e,f) + 0x78a5636f + W[57];
215 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
216 t1 = f + e1(c) + Ch(c,d,e) + 0x84c87814 + W[58];
217 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
218 t1 = e + e1(b) + Ch(b,c,d) + 0x8cc70208 + W[59];
219 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
220 t1 = d + e1(a) + Ch(a,b,c) + 0x90befffa + W[60];
221 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
222 t1 = c + e1(h) + Ch(h,a,b) + 0xa4506ceb + W[61];
223 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
224 t1 = b + e1(g) + Ch(g,h,a) + 0xbef9a3f7 + W[62];
225 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
226 t1 = a + e1(f) + Ch(f,g,h) + 0xc67178f2 + W[63];
227 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
228
229 state[0] += a; state[1] += b; state[2] += c; state[3] += d;
230 state[4] += e; state[5] += f; state[6] += g; state[7] += h;
231
232 /* clear any sensitive info... */
233 a = b = c = d = e = f = g = h = t1 = t2 = 0;
234 memset(W, 0, 64 * sizeof(uint32_t));
235}
236
237void sha256_init(struct sha256_ctx *sctx)
238{
239 sctx->state[0] = H0;
240 sctx->state[1] = H1;
241 sctx->state[2] = H2;
242 sctx->state[3] = H3;
243 sctx->state[4] = H4;
244 sctx->state[5] = H5;
245 sctx->state[6] = H6;
246 sctx->state[7] = H7;
247 sctx->count[0] = sctx->count[1] = 0;
248}
249
250void sha256_update(struct sha256_ctx *sctx, const uint8_t *data,
251 unsigned int len)
252{
253 unsigned int i, index, part_len;
254
255 /* Compute number of bytes mod 128 */
256 index = (unsigned int)((sctx->count[0] >> 3) & 0x3f);
257
258 /* Update number of bits */
259 if ((sctx->count[0] += (len << 3)) < (len << 3)) {
260 sctx->count[1]++;
261 sctx->count[1] += (len >> 29);
262 }
263
264 part_len = 64 - index;
265
266 /* Transform as many times as possible. */
267 if (len >= part_len) {
268 memcpy(&sctx->buf[index], data, part_len);
269 sha256_transform(sctx->state, sctx->buf);
270
271 for (i = part_len; i + 63 < len; i += 64)
272 sha256_transform(sctx->state, &data[i]);
273 index = 0;
274 } else {
275 i = 0;
276 }
277
278 /* Buffer remaining input */
279 memcpy(&sctx->buf[index], &data[i], len-i);
280}