Wire Sysio Wire Sysion 1.0.0
Loading...
Searching...
No Matches
hash_impl.h
Go to the documentation of this file.
1/***********************************************************************
2 * Copyright (c) 2014 Pieter Wuille *
3 * Distributed under the MIT software license, see the accompanying *
4 * file COPYING or https://www.opensource.org/licenses/mit-license.php.*
5 ***********************************************************************/
6
7#ifndef SECP256K1_HASH_IMPL_H
8#define SECP256K1_HASH_IMPL_H
9
10#include "hash.h"
11#include "util.h"
12
13#include <stdlib.h>
14#include <stdint.h>
15#include <string.h>
16
17#define Ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
18#define Maj(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
19#define Sigma0(x) (((x) >> 2 | (x) << 30) ^ ((x) >> 13 | (x) << 19) ^ ((x) >> 22 | (x) << 10))
20#define Sigma1(x) (((x) >> 6 | (x) << 26) ^ ((x) >> 11 | (x) << 21) ^ ((x) >> 25 | (x) << 7))
21#define sigma0(x) (((x) >> 7 | (x) << 25) ^ ((x) >> 18 | (x) << 14) ^ ((x) >> 3))
22#define sigma1(x) (((x) >> 17 | (x) << 15) ^ ((x) >> 19 | (x) << 13) ^ ((x) >> 10))
23
24#define Round(a,b,c,d,e,f,g,h,k,w) do { \
25 uint32_t t1 = (h) + Sigma1(e) + Ch((e), (f), (g)) + (k) + (w); \
26 uint32_t t2 = Sigma0(a) + Maj((a), (b), (c)); \
27 (d) += t1; \
28 (h) = t1 + t2; \
29} while(0)
30
31static void secp256k1_sha256_initialize(secp256k1_sha256 *hash) {
32 hash->s[0] = 0x6a09e667ul;
33 hash->s[1] = 0xbb67ae85ul;
34 hash->s[2] = 0x3c6ef372ul;
35 hash->s[3] = 0xa54ff53aul;
36 hash->s[4] = 0x510e527ful;
37 hash->s[5] = 0x9b05688cul;
38 hash->s[6] = 0x1f83d9abul;
39 hash->s[7] = 0x5be0cd19ul;
40 hash->bytes = 0;
41}
42
44static void secp256k1_sha256_transform(uint32_t* s, const unsigned char* buf) {
45 uint32_t a = s[0], b = s[1], c = s[2], d = s[3], e = s[4], f = s[5], g = s[6], h = s[7];
46 uint32_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15;
47
48 Round(a, b, c, d, e, f, g, h, 0x428a2f98, w0 = secp256k1_read_be32(&buf[0]));
49 Round(h, a, b, c, d, e, f, g, 0x71374491, w1 = secp256k1_read_be32(&buf[4]));
50 Round(g, h, a, b, c, d, e, f, 0xb5c0fbcf, w2 = secp256k1_read_be32(&buf[8]));
51 Round(f, g, h, a, b, c, d, e, 0xe9b5dba5, w3 = secp256k1_read_be32(&buf[12]));
52 Round(e, f, g, h, a, b, c, d, 0x3956c25b, w4 = secp256k1_read_be32(&buf[16]));
53 Round(d, e, f, g, h, a, b, c, 0x59f111f1, w5 = secp256k1_read_be32(&buf[20]));
54 Round(c, d, e, f, g, h, a, b, 0x923f82a4, w6 = secp256k1_read_be32(&buf[24]));
55 Round(b, c, d, e, f, g, h, a, 0xab1c5ed5, w7 = secp256k1_read_be32(&buf[28]));
56 Round(a, b, c, d, e, f, g, h, 0xd807aa98, w8 = secp256k1_read_be32(&buf[32]));
57 Round(h, a, b, c, d, e, f, g, 0x12835b01, w9 = secp256k1_read_be32(&buf[36]));
58 Round(g, h, a, b, c, d, e, f, 0x243185be, w10 = secp256k1_read_be32(&buf[40]));
59 Round(f, g, h, a, b, c, d, e, 0x550c7dc3, w11 = secp256k1_read_be32(&buf[44]));
60 Round(e, f, g, h, a, b, c, d, 0x72be5d74, w12 = secp256k1_read_be32(&buf[48]));
61 Round(d, e, f, g, h, a, b, c, 0x80deb1fe, w13 = secp256k1_read_be32(&buf[52]));
62 Round(c, d, e, f, g, h, a, b, 0x9bdc06a7, w14 = secp256k1_read_be32(&buf[56]));
63 Round(b, c, d, e, f, g, h, a, 0xc19bf174, w15 = secp256k1_read_be32(&buf[60]));
64
65 Round(a, b, c, d, e, f, g, h, 0xe49b69c1, w0 += sigma1(w14) + w9 + sigma0(w1));
66 Round(h, a, b, c, d, e, f, g, 0xefbe4786, w1 += sigma1(w15) + w10 + sigma0(w2));
67 Round(g, h, a, b, c, d, e, f, 0x0fc19dc6, w2 += sigma1(w0) + w11 + sigma0(w3));
68 Round(f, g, h, a, b, c, d, e, 0x240ca1cc, w3 += sigma1(w1) + w12 + sigma0(w4));
69 Round(e, f, g, h, a, b, c, d, 0x2de92c6f, w4 += sigma1(w2) + w13 + sigma0(w5));
70 Round(d, e, f, g, h, a, b, c, 0x4a7484aa, w5 += sigma1(w3) + w14 + sigma0(w6));
71 Round(c, d, e, f, g, h, a, b, 0x5cb0a9dc, w6 += sigma1(w4) + w15 + sigma0(w7));
72 Round(b, c, d, e, f, g, h, a, 0x76f988da, w7 += sigma1(w5) + w0 + sigma0(w8));
73 Round(a, b, c, d, e, f, g, h, 0x983e5152, w8 += sigma1(w6) + w1 + sigma0(w9));
74 Round(h, a, b, c, d, e, f, g, 0xa831c66d, w9 += sigma1(w7) + w2 + sigma0(w10));
75 Round(g, h, a, b, c, d, e, f, 0xb00327c8, w10 += sigma1(w8) + w3 + sigma0(w11));
76 Round(f, g, h, a, b, c, d, e, 0xbf597fc7, w11 += sigma1(w9) + w4 + sigma0(w12));
77 Round(e, f, g, h, a, b, c, d, 0xc6e00bf3, w12 += sigma1(w10) + w5 + sigma0(w13));
78 Round(d, e, f, g, h, a, b, c, 0xd5a79147, w13 += sigma1(w11) + w6 + sigma0(w14));
79 Round(c, d, e, f, g, h, a, b, 0x06ca6351, w14 += sigma1(w12) + w7 + sigma0(w15));
80 Round(b, c, d, e, f, g, h, a, 0x14292967, w15 += sigma1(w13) + w8 + sigma0(w0));
81
82 Round(a, b, c, d, e, f, g, h, 0x27b70a85, w0 += sigma1(w14) + w9 + sigma0(w1));
83 Round(h, a, b, c, d, e, f, g, 0x2e1b2138, w1 += sigma1(w15) + w10 + sigma0(w2));
84 Round(g, h, a, b, c, d, e, f, 0x4d2c6dfc, w2 += sigma1(w0) + w11 + sigma0(w3));
85 Round(f, g, h, a, b, c, d, e, 0x53380d13, w3 += sigma1(w1) + w12 + sigma0(w4));
86 Round(e, f, g, h, a, b, c, d, 0x650a7354, w4 += sigma1(w2) + w13 + sigma0(w5));
87 Round(d, e, f, g, h, a, b, c, 0x766a0abb, w5 += sigma1(w3) + w14 + sigma0(w6));
88 Round(c, d, e, f, g, h, a, b, 0x81c2c92e, w6 += sigma1(w4) + w15 + sigma0(w7));
89 Round(b, c, d, e, f, g, h, a, 0x92722c85, w7 += sigma1(w5) + w0 + sigma0(w8));
90 Round(a, b, c, d, e, f, g, h, 0xa2bfe8a1, w8 += sigma1(w6) + w1 + sigma0(w9));
91 Round(h, a, b, c, d, e, f, g, 0xa81a664b, w9 += sigma1(w7) + w2 + sigma0(w10));
92 Round(g, h, a, b, c, d, e, f, 0xc24b8b70, w10 += sigma1(w8) + w3 + sigma0(w11));
93 Round(f, g, h, a, b, c, d, e, 0xc76c51a3, w11 += sigma1(w9) + w4 + sigma0(w12));
94 Round(e, f, g, h, a, b, c, d, 0xd192e819, w12 += sigma1(w10) + w5 + sigma0(w13));
95 Round(d, e, f, g, h, a, b, c, 0xd6990624, w13 += sigma1(w11) + w6 + sigma0(w14));
96 Round(c, d, e, f, g, h, a, b, 0xf40e3585, w14 += sigma1(w12) + w7 + sigma0(w15));
97 Round(b, c, d, e, f, g, h, a, 0x106aa070, w15 += sigma1(w13) + w8 + sigma0(w0));
98
99 Round(a, b, c, d, e, f, g, h, 0x19a4c116, w0 += sigma1(w14) + w9 + sigma0(w1));
100 Round(h, a, b, c, d, e, f, g, 0x1e376c08, w1 += sigma1(w15) + w10 + sigma0(w2));
101 Round(g, h, a, b, c, d, e, f, 0x2748774c, w2 += sigma1(w0) + w11 + sigma0(w3));
102 Round(f, g, h, a, b, c, d, e, 0x34b0bcb5, w3 += sigma1(w1) + w12 + sigma0(w4));
103 Round(e, f, g, h, a, b, c, d, 0x391c0cb3, w4 += sigma1(w2) + w13 + sigma0(w5));
104 Round(d, e, f, g, h, a, b, c, 0x4ed8aa4a, w5 += sigma1(w3) + w14 + sigma0(w6));
105 Round(c, d, e, f, g, h, a, b, 0x5b9cca4f, w6 += sigma1(w4) + w15 + sigma0(w7));
106 Round(b, c, d, e, f, g, h, a, 0x682e6ff3, w7 += sigma1(w5) + w0 + sigma0(w8));
107 Round(a, b, c, d, e, f, g, h, 0x748f82ee, w8 += sigma1(w6) + w1 + sigma0(w9));
108 Round(h, a, b, c, d, e, f, g, 0x78a5636f, w9 += sigma1(w7) + w2 + sigma0(w10));
109 Round(g, h, a, b, c, d, e, f, 0x84c87814, w10 += sigma1(w8) + w3 + sigma0(w11));
110 Round(f, g, h, a, b, c, d, e, 0x8cc70208, w11 += sigma1(w9) + w4 + sigma0(w12));
111 Round(e, f, g, h, a, b, c, d, 0x90befffa, w12 += sigma1(w10) + w5 + sigma0(w13));
112 Round(d, e, f, g, h, a, b, c, 0xa4506ceb, w13 += sigma1(w11) + w6 + sigma0(w14));
113 Round(c, d, e, f, g, h, a, b, 0xbef9a3f7, w14 + sigma1(w12) + w7 + sigma0(w15));
114 Round(b, c, d, e, f, g, h, a, 0xc67178f2, w15 + sigma1(w13) + w8 + sigma0(w0));
115
116 s[0] += a;
117 s[1] += b;
118 s[2] += c;
119 s[3] += d;
120 s[4] += e;
121 s[5] += f;
122 s[6] += g;
123 s[7] += h;
124}
125
126static void secp256k1_sha256_write(secp256k1_sha256 *hash, const unsigned char *data, size_t len) {
127 size_t bufsize = hash->bytes & 0x3F;
128 hash->bytes += len;
129 VERIFY_CHECK(hash->bytes >= len);
130 while (len >= 64 - bufsize) {
131 /* Fill the buffer, and process it. */
132 size_t chunk_len = 64 - bufsize;
133 memcpy(hash->buf + bufsize, data, chunk_len);
134 data += chunk_len;
135 len -= chunk_len;
136 secp256k1_sha256_transform(hash->s, hash->buf);
137 bufsize = 0;
138 }
139 if (len) {
140 /* Fill the buffer with what remains. */
141 memcpy(((unsigned char*)hash->buf) + bufsize, data, len);
142 }
143}
144
145static void secp256k1_sha256_finalize(secp256k1_sha256 *hash, unsigned char *out32) {
146 static const unsigned char pad[64] = {0x80};
147 unsigned char sizedesc[8];
148 int i;
149 /* The maximum message size of SHA256 is 2^64-1 bits. */
150 VERIFY_CHECK(hash->bytes < ((uint64_t)1 << 61));
151 secp256k1_write_be32(&sizedesc[0], hash->bytes >> 29);
152 secp256k1_write_be32(&sizedesc[4], hash->bytes << 3);
153 secp256k1_sha256_write(hash, pad, 1 + ((119 - (hash->bytes % 64)) % 64));
154 secp256k1_sha256_write(hash, sizedesc, 8);
155 for (i = 0; i < 8; i++) {
156 secp256k1_write_be32(&out32[4*i], hash->s[i]);
157 hash->s[i] = 0;
158 }
159}
160
161/* Initializes a sha256 struct and writes the 64 byte string
162 * SHA256(tag)||SHA256(tag) into it. */
163static void secp256k1_sha256_initialize_tagged(secp256k1_sha256 *hash, const unsigned char *tag, size_t taglen) {
164 unsigned char buf[32];
165 secp256k1_sha256_initialize(hash);
166 secp256k1_sha256_write(hash, tag, taglen);
167 secp256k1_sha256_finalize(hash, buf);
168
169 secp256k1_sha256_initialize(hash);
170 secp256k1_sha256_write(hash, buf, 32);
171 secp256k1_sha256_write(hash, buf, 32);
172}
173
174static void secp256k1_hmac_sha256_initialize(secp256k1_hmac_sha256 *hash, const unsigned char *key, size_t keylen) {
175 size_t n;
176 unsigned char rkey[64];
177 if (keylen <= sizeof(rkey)) {
178 memcpy(rkey, key, keylen);
179 memset(rkey + keylen, 0, sizeof(rkey) - keylen);
180 } else {
181 secp256k1_sha256 sha256;
182 secp256k1_sha256_initialize(&sha256);
183 secp256k1_sha256_write(&sha256, key, keylen);
184 secp256k1_sha256_finalize(&sha256, rkey);
185 memset(rkey + 32, 0, 32);
186 }
187
188 secp256k1_sha256_initialize(&hash->outer);
189 for (n = 0; n < sizeof(rkey); n++) {
190 rkey[n] ^= 0x5c;
191 }
192 secp256k1_sha256_write(&hash->outer, rkey, sizeof(rkey));
193
194 secp256k1_sha256_initialize(&hash->inner);
195 for (n = 0; n < sizeof(rkey); n++) {
196 rkey[n] ^= 0x5c ^ 0x36;
197 }
198 secp256k1_sha256_write(&hash->inner, rkey, sizeof(rkey));
199 memset(rkey, 0, sizeof(rkey));
200}
201
202static void secp256k1_hmac_sha256_write(secp256k1_hmac_sha256 *hash, const unsigned char *data, size_t size) {
203 secp256k1_sha256_write(&hash->inner, data, size);
204}
205
206static void secp256k1_hmac_sha256_finalize(secp256k1_hmac_sha256 *hash, unsigned char *out32) {
207 unsigned char temp[32];
208 secp256k1_sha256_finalize(&hash->inner, temp);
209 secp256k1_sha256_write(&hash->outer, temp, 32);
210 memset(temp, 0, 32);
211 secp256k1_sha256_finalize(&hash->outer, out32);
212}
213
214
215static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256 *rng, const unsigned char *key, size_t keylen) {
216 secp256k1_hmac_sha256 hmac;
217 static const unsigned char zero[1] = {0x00};
218 static const unsigned char one[1] = {0x01};
219
220 memset(rng->v, 0x01, 32); /* RFC6979 3.2.b. */
221 memset(rng->k, 0x00, 32); /* RFC6979 3.2.c. */
222
223 /* RFC6979 3.2.d. */
224 secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
225 secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
226 secp256k1_hmac_sha256_write(&hmac, zero, 1);
227 secp256k1_hmac_sha256_write(&hmac, key, keylen);
228 secp256k1_hmac_sha256_finalize(&hmac, rng->k);
229 secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
230 secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
231 secp256k1_hmac_sha256_finalize(&hmac, rng->v);
232
233 /* RFC6979 3.2.f. */
234 secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
235 secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
236 secp256k1_hmac_sha256_write(&hmac, one, 1);
237 secp256k1_hmac_sha256_write(&hmac, key, keylen);
238 secp256k1_hmac_sha256_finalize(&hmac, rng->k);
239 secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
240 secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
241 secp256k1_hmac_sha256_finalize(&hmac, rng->v);
242 rng->retry = 0;
243}
244
245static void secp256k1_rfc6979_hmac_sha256_generate(secp256k1_rfc6979_hmac_sha256 *rng, unsigned char *out, size_t outlen) {
246 /* RFC6979 3.2.h. */
247 static const unsigned char zero[1] = {0x00};
248 if (rng->retry) {
249 secp256k1_hmac_sha256 hmac;
250 secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
251 secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
252 secp256k1_hmac_sha256_write(&hmac, zero, 1);
253 secp256k1_hmac_sha256_finalize(&hmac, rng->k);
254 secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
255 secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
256 secp256k1_hmac_sha256_finalize(&hmac, rng->v);
257 }
258
259 while (outlen > 0) {
260 secp256k1_hmac_sha256 hmac;
261 int now = outlen;
262 secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
263 secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
264 secp256k1_hmac_sha256_finalize(&hmac, rng->v);
265 if (now > 32) {
266 now = 32;
267 }
268 memcpy(out, rng->v, now);
269 out += now;
270 outlen -= now;
271 }
272
273 rng->retry = 1;
274}
275
276static void secp256k1_rfc6979_hmac_sha256_finalize(secp256k1_rfc6979_hmac_sha256 *rng) {
277 memset(rng->k, 0, 32);
278 memset(rng->v, 0, 32);
279 rng->retry = 0;
280}
281
282#undef Round
283#undef sigma1
284#undef sigma0
285#undef Sigma1
286#undef Sigma0
287#undef Maj
288#undef Ch
289
290#endif /* SECP256K1_HASH_IMPL_H */
one
std::string one()
Definition 030-Asn-Require-Check.cpp:15
f
foo f
Definition X02-DisabledMacros.cpp:25
VERIFY_CHECK
#define VERIFY_CHECK(cond)
Definition util.h:95
sigma1
#define sigma1(x)
Definition hash_impl.h:22
Round
#define Round(a, b, c, d, e, f, g, h, k, w)
Definition hash_impl.h:24
sigma0
#define sigma0(x)
Definition hash_impl.h:21
Catch::rng
std::mt19937 & rng()
Definition catch_random_number_generator.cpp:14
sysio::chain_apis::sha256
constexpr const char sha256[]
Definition chain_plugin.hpp:698
a
const GenericPointer< typename T::ValueType > T2 T::AllocatorType & a
Definition pointer.h:1181
uint32_t
unsigned int uint32_t
Definition stdint.h:126
uint64_t
unsigned __int64 uint64_t
Definition stdint.h:136
secp256k1_hmac_sha256
Definition hash.h:23
secp256k1_rfc6979_hmac_sha256
Definition hash.h:31
secp256k1_sha256
Definition hash.h:13
d
CK_ULONG d
Definition yubihsm_pkcs11.c:1238
s
char * s
Definition yubihsm_pkcs11.c:524
len
size_t len
Definition yubihsm_pkcs11.c:4771
buf
uint8_t buf[2048]
Definition yubihsm_pkcs11.c:4770
memset
memset(pInfo->slotDescription, ' ', 64)
memcpy
memcpy((char *) pInfo->slotDescription, s, l)