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4185 New hash algorithm support
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--- old/usr/src/grub/grub-0.97/stage2/zfs_sha256.c
+++ new/usr/src/grub/grub-0.97/stage2/zfs_sha256.c
1 1 /*
2 2 * GRUB -- GRand Unified Bootloader
3 3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
4 4 *
5 5 * This program is free software; you can redistribute it and/or modify
6 6 * it under the terms of the GNU General Public License as published by
7 7 * the Free Software Foundation; either version 2 of the License, or
8 8 * (at your option) any later version.
9 9 *
10 10 * This program is distributed in the hope that it will be useful,
11 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 13 * GNU General Public License for more details.
14 14 *
15 15 * You should have received a copy of the GNU General Public License
16 16 * along with this program; if not, write to the Free Software
17 17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 18 */
19 19 /*
20 20 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
21 21 * Use is subject to license terms.
22 22 */
23 +/*
24 + * Copyright 2013 Saso Kiselkov. All rights reserved.
25 + */
23 26
24 -#pragma ident "%Z%%M% %I% %E% SMI"
25 -
26 27 #include "fsys_zfs.h"
27 28
28 29 /*
29 - * SHA-256 checksum, as specified in FIPS 180-2, available at:
30 + * SHA-256 and SHA-512/256 hashes, as specified in FIPS 180-4, available at:
30 31 * http://csrc.nist.gov/cryptval
31 32 *
32 - * This is a very compact implementation of SHA-256.
33 + * This is a very compact implementation of SHA-256 and SHA-512/256.
33 34 * It is designed to be simple and portable, not to be fast.
34 35 */
35 36
36 37 /*
37 - * The literal definitions according to FIPS180-2 would be:
38 + * The literal definitions according to FIPS180-4 would be:
38 39 *
39 40 * Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
40 41 * Maj(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
41 42 *
42 43 * We use logical equivalents which require one less op.
43 44 */
44 45 #define Ch(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
45 46 #define Maj(x, y, z) (((x) & (y)) ^ ((z) & ((x) ^ (y))))
46 -#define Rot32(x, s) (((x) >> s) | ((x) << (32 - s)))
47 -#define SIGMA0(x) (Rot32(x, 2) ^ Rot32(x, 13) ^ Rot32(x, 22))
48 -#define SIGMA1(x) (Rot32(x, 6) ^ Rot32(x, 11) ^ Rot32(x, 25))
49 -#define sigma0(x) (Rot32(x, 7) ^ Rot32(x, 18) ^ ((x) >> 3))
50 -#define sigma1(x) (Rot32(x, 17) ^ Rot32(x, 19) ^ ((x) >> 10))
47 +#define ROTR(x, n) (((x) >> (n)) | ((x) << ((sizeof (x) * NBBY)-(n))))
51 48
49 +/* SHA-224/256 operations */
50 +#define BIGSIGMA0_256(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
51 +#define BIGSIGMA1_256(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
52 +#define SIGMA0_256(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ ((x) >> 3))
53 +#define SIGMA1_256(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ ((x) >> 10))
54 +
55 +/* SHA-384/512 operations */
56 +#define BIGSIGMA0_512(x) (ROTR((x), 28) ^ ROTR((x), 34) ^ ROTR((x), 39))
57 +#define BIGSIGMA1_512(x) (ROTR((x), 14) ^ ROTR((x), 18) ^ ROTR((x), 41))
58 +#define SIGMA0_512(x) (ROTR((x), 1) ^ ROTR((x), 8) ^ ((x) >> 7))
59 +#define SIGMA1_512(x) (ROTR((x), 19) ^ ROTR((x), 61) ^ ((x) >> 6))
60 +
61 +/* SHA-256 round constants */
52 62 static const uint32_t SHA256_K[64] = {
53 63 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
54 64 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
55 65 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
56 66 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
57 67 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
58 68 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
59 69 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
60 70 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
61 71 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
62 72 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
63 73 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
64 74 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
65 75 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
66 76 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
67 77 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
68 78 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
69 79 };
70 80
81 +/* SHA-512 round constants */
82 +static const uint64_t SHA512_K[80] = {
83 + 0x428A2F98D728AE22ULL, 0x7137449123EF65CDULL,
84 + 0xB5C0FBCFEC4D3B2FULL, 0xE9B5DBA58189DBBCULL,
85 + 0x3956C25BF348B538ULL, 0x59F111F1B605D019ULL,
86 + 0x923F82A4AF194F9BULL, 0xAB1C5ED5DA6D8118ULL,
87 + 0xD807AA98A3030242ULL, 0x12835B0145706FBEULL,
88 + 0x243185BE4EE4B28CULL, 0x550C7DC3D5FFB4E2ULL,
89 + 0x72BE5D74F27B896FULL, 0x80DEB1FE3B1696B1ULL,
90 + 0x9BDC06A725C71235ULL, 0xC19BF174CF692694ULL,
91 + 0xE49B69C19EF14AD2ULL, 0xEFBE4786384F25E3ULL,
92 + 0x0FC19DC68B8CD5B5ULL, 0x240CA1CC77AC9C65ULL,
93 + 0x2DE92C6F592B0275ULL, 0x4A7484AA6EA6E483ULL,
94 + 0x5CB0A9DCBD41FBD4ULL, 0x76F988DA831153B5ULL,
95 + 0x983E5152EE66DFABULL, 0xA831C66D2DB43210ULL,
96 + 0xB00327C898FB213FULL, 0xBF597FC7BEEF0EE4ULL,
97 + 0xC6E00BF33DA88FC2ULL, 0xD5A79147930AA725ULL,
98 + 0x06CA6351E003826FULL, 0x142929670A0E6E70ULL,
99 + 0x27B70A8546D22FFCULL, 0x2E1B21385C26C926ULL,
100 + 0x4D2C6DFC5AC42AEDULL, 0x53380D139D95B3DFULL,
101 + 0x650A73548BAF63DEULL, 0x766A0ABB3C77B2A8ULL,
102 + 0x81C2C92E47EDAEE6ULL, 0x92722C851482353BULL,
103 + 0xA2BFE8A14CF10364ULL, 0xA81A664BBC423001ULL,
104 + 0xC24B8B70D0F89791ULL, 0xC76C51A30654BE30ULL,
105 + 0xD192E819D6EF5218ULL, 0xD69906245565A910ULL,
106 + 0xF40E35855771202AULL, 0x106AA07032BBD1B8ULL,
107 + 0x19A4C116B8D2D0C8ULL, 0x1E376C085141AB53ULL,
108 + 0x2748774CDF8EEB99ULL, 0x34B0BCB5E19B48A8ULL,
109 + 0x391C0CB3C5C95A63ULL, 0x4ED8AA4AE3418ACBULL,
110 + 0x5B9CCA4F7763E373ULL, 0x682E6FF3D6B2B8A3ULL,
111 + 0x748F82EE5DEFB2FCULL, 0x78A5636F43172F60ULL,
112 + 0x84C87814A1F0AB72ULL, 0x8CC702081A6439ECULL,
113 + 0x90BEFFFA23631E28ULL, 0xA4506CEBDE82BDE9ULL,
114 + 0xBEF9A3F7B2C67915ULL, 0xC67178F2E372532BULL,
115 + 0xCA273ECEEA26619CULL, 0xD186B8C721C0C207ULL,
116 + 0xEADA7DD6CDE0EB1EULL, 0xF57D4F7FEE6ED178ULL,
117 + 0x06F067AA72176FBAULL, 0x0A637DC5A2C898A6ULL,
118 + 0x113F9804BEF90DAEULL, 0x1B710B35131C471BULL,
119 + 0x28DB77F523047D84ULL, 0x32CAAB7B40C72493ULL,
120 + 0x3C9EBE0A15C9BEBCULL, 0x431D67C49C100D4CULL,
121 + 0x4CC5D4BECB3E42B6ULL, 0x597F299CFC657E2AULL,
122 + 0x5FCB6FAB3AD6FAECULL, 0x6C44198C4A475817ULL
123 +};
124 +
71 125 static void
72 126 SHA256Transform(uint32_t *H, const uint8_t *cp)
73 127 {
74 128 uint32_t a, b, c, d, e, f, g, h, t, T1, T2, W[64];
75 129
76 - for (t = 0; t < 16; t++, cp += 4)
130 + /* copy chunk into the first 16 words of the message schedule */
131 + for (t = 0; t < 16; t++, cp += sizeof (uint32_t))
77 132 W[t] = (cp[0] << 24) | (cp[1] << 16) | (cp[2] << 8) | cp[3];
78 133
134 + /* extend the first 16 words into the remaining 48 words */
79 135 for (t = 16; t < 64; t++)
80 - W[t] = sigma1(W[t - 2]) + W[t - 7] +
81 - sigma0(W[t - 15]) + W[t - 16];
136 + W[t] = SIGMA1_256(W[t - 2]) + W[t - 7] +
137 + SIGMA0_256(W[t - 15]) + W[t - 16];
82 138
139 + /* init working variables to the current hash value */
83 140 a = H[0]; b = H[1]; c = H[2]; d = H[3];
84 141 e = H[4]; f = H[5]; g = H[6]; h = H[7];
85 142
143 + /* iterate the compression function for all rounds of the hash */
86 144 for (t = 0; t < 64; t++) {
87 - T1 = h + SIGMA1(e) + Ch(e, f, g) + SHA256_K[t] + W[t];
88 - T2 = SIGMA0(a) + Maj(a, b, c);
145 + T1 = h + BIGSIGMA1_256(e) + Ch(e, f, g) + SHA256_K[t] + W[t];
146 + T2 = BIGSIGMA0_256(a) + Maj(a, b, c);
89 147 h = g; g = f; f = e; e = d + T1;
90 148 d = c; c = b; b = a; a = T1 + T2;
91 149 }
92 150
151 + /* add the compressed chunk to the current hash value */
93 152 H[0] += a; H[1] += b; H[2] += c; H[3] += d;
94 153 H[4] += e; H[5] += f; H[6] += g; H[7] += h;
95 154 }
96 155
97 -void
98 -zio_checksum_SHA256(const void *buf, uint64_t size, zio_cksum_t *zcp)
156 +static void
157 +SHA512Transform(uint64_t *H, const uint8_t *cp)
99 158 {
100 - uint32_t H[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
101 - 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 };
102 - uint8_t pad[128];
103 - int padsize = size & 63;
104 - int i;
159 + uint64_t a, b, c, d, e, f, g, h, t, T1, T2, W[80];
105 160
161 + /* copy chunk into the first 16 words of the message schedule */
162 + for (t = 0; t < 16; t++, cp += sizeof (uint64_t))
163 + W[t] = ((uint64_t)cp[0] << 56) | ((uint64_t)cp[1] << 48) |
164 + ((uint64_t)cp[2] << 40) | ((uint64_t)cp[3] << 32) |
165 + (cp[4] << 24) | (cp[5] << 16) | (cp[6] << 8) | cp[7];
166 +
167 + /* extend the first 16 words into the remaining 64 words */
168 + for (t = 16; t < 80; t++)
169 + W[t] = SIGMA1_512(W[t - 2]) + W[t - 7] +
170 + SIGMA0_512(W[t - 15]) + W[t - 16];
171 +
172 + /* init working variables to the current hash value */
173 + a = H[0]; b = H[1]; c = H[2]; d = H[3];
174 + e = H[4]; f = H[5]; g = H[6]; h = H[7];
175 +
176 + /* iterate the compression function for all rounds of the hash */
177 + for (t = 0; t < 80; t++) {
178 + T1 = h + BIGSIGMA1_512(e) + Ch(e, f, g) + SHA512_K[t] + W[t];
179 + T2 = BIGSIGMA0_512(a) + Maj(a, b, c);
180 + h = g; g = f; f = e; e = d + T1;
181 + d = c; c = b; b = a; a = T1 + T2;
182 + }
183 +
184 + /* add the compressed chunk to the current hash value */
185 + H[0] += a; H[1] += b; H[2] += c; H[3] += d;
186 + H[4] += e; H[5] += f; H[6] += g; H[7] += h;
187 +}
188 +
189 +/*
190 + * Implements the SHA-224 and SHA-256 hash algos - to select between them
191 + * pass the appropriate initial values of 'H' and truncate the last 32 bits
192 + * in case of SHA-224.
193 + */
194 +static void
195 +SHA256(uint32_t *H, const void *buf, uint64_t size, zio_cksum_t *zcp)
196 +{
197 + uint8_t pad[128];
198 + unsigned padsize = size & 63;
199 + unsigned i;
200 +
201 + /* process all blocks up to the last one */
106 202 for (i = 0; i < size - padsize; i += 64)
107 203 SHA256Transform(H, (uint8_t *)buf + i);
108 204
205 + /* process the last block and padding */
109 206 for (i = 0; i < padsize; i++)
110 207 pad[i] = ((uint8_t *)buf)[i];
111 208
112 209 for (pad[padsize++] = 0x80; (padsize & 63) != 56; padsize++)
113 210 pad[padsize] = 0;
114 211
115 212 for (i = 0; i < 8; i++)
116 213 pad[padsize++] = (size << 3) >> (56 - 8 * i);
117 214
118 215 for (i = 0; i < padsize; i += 64)
119 216 SHA256Transform(H, pad + i);
120 217
121 218 ZIO_SET_CHECKSUM(zcp,
122 219 (uint64_t)H[0] << 32 | H[1],
123 220 (uint64_t)H[2] << 32 | H[3],
124 221 (uint64_t)H[4] << 32 | H[5],
125 222 (uint64_t)H[6] << 32 | H[7]);
223 +}
224 +
225 +/*
226 + * Implements the SHA-384, SHA-512 and SHA-512/t hash algos - to select
227 + * between them pass the appropriate initial values for 'H'. The output
228 + * of this function is truncated to the first 256 bits that fit into 'zcp'.
229 + */
230 +static void
231 +SHA512(uint64_t *H, const void *buf, uint64_t size, zio_cksum_t *zcp)
232 +{
233 + uint8_t pad[256];
234 + unsigned padsize = size & 127;
235 + unsigned i;
236 +
237 + /* process all blocks up to the last one */
238 + for (i = 0; i < size - padsize; i += 128)
239 + SHA512Transform(H, (uint8_t *)buf + i);
240 +
241 + /* process the last block and padding */
242 + for (i = 0; i < padsize; i++)
243 + pad[i] = ((uint8_t *)buf)[i];
244 +
245 + for (pad[padsize++] = 0x80; (padsize & 127) != 120; padsize++)
246 + pad[padsize] = 0;
247 +
248 + for (i = 0; i < 8; i++)
249 + pad[padsize++] = (size << 3) >> (120 - 8 * i);
250 +
251 + for (i = 0; i < padsize; i += 128)
252 + SHA512Transform(H, pad + i);
253 +
254 + /* truncate the output to the first 256 bits which fit into 'zcp' */
255 + ZIO_SET_CHECKSUM(zcp, H[0], H[1], H[2], H[3]);
256 +}
257 +
258 +void
259 +zio_checksum_SHA256(const void *buf, uint64_t size, zio_cksum_t *zcp)
260 +{
261 + /* SHA-256 as per FIPS 180-4. */
262 + uint32_t H[] = {
263 + 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
264 + 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
265 + };
266 + SHA256(H, buf, size, zcp);
267 +}
268 +
269 +void
270 +zio_checksum_SHA512(const void *buf, uint64_t size, zio_cksum_t *zcp)
271 +{
272 + /* SHA-512/256 as per FIPS 180-4. */
273 + uint64_t H[] = {
274 + 0x22312194FC2BF72CULL, 0x9F555FA3C84C64C2ULL,
275 + 0x2393B86B6F53B151ULL, 0x963877195940EABDULL,
276 + 0x96283EE2A88EFFE3ULL, 0xBE5E1E2553863992ULL,
277 + 0x2B0199FC2C85B8AAULL, 0x0EB72DDC81C52CA2ULL
278 + };
279 + SHA512(H, buf, size, zcp);
126 280 }
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