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1da177e4 LT |
1 | /* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com> |
2 | * | |
3 | * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com> | |
4 | * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> | |
5 | * Copyright (c) 2003 Kyle McMartin <kyle@debian.org> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | */ | |
bd9d20db | 13 | #include <crypto/internal/hash.h> |
1da177e4 LT |
14 | #include <linux/kernel.h> |
15 | #include <linux/module.h> | |
1da177e4 LT |
16 | #include <linux/mm.h> |
17 | #include <linux/init.h> | |
18 | #include <linux/crypto.h> | |
06ace7a9 | 19 | #include <linux/types.h> |
5265eeb2 | 20 | #include <crypto/sha.h> |
f9e2bca6 | 21 | #include <linux/percpu.h> |
1da177e4 LT |
22 | #include <asm/byteorder.h> |
23 | ||
1da177e4 LT |
24 | static inline u64 Ch(u64 x, u64 y, u64 z) |
25 | { | |
26 | return z ^ (x & (y ^ z)); | |
27 | } | |
28 | ||
29 | static inline u64 Maj(u64 x, u64 y, u64 z) | |
30 | { | |
31 | return (x & y) | (z & (x | y)); | |
32 | } | |
33 | ||
34 | static inline u64 RORu64(u64 x, u64 y) | |
35 | { | |
36 | return (x >> y) | (x << (64 - y)); | |
37 | } | |
38 | ||
39 | static const u64 sha512_K[80] = { | |
40 | 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, | |
41 | 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, | |
42 | 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL, | |
43 | 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, | |
44 | 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, | |
45 | 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, | |
46 | 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL, | |
47 | 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, | |
48 | 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, | |
49 | 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, | |
50 | 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL, | |
51 | 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, | |
52 | 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, | |
53 | 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, | |
54 | 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL, | |
55 | 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, | |
56 | 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, | |
57 | 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, | |
58 | 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL, | |
59 | 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, | |
60 | 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, | |
61 | 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, | |
62 | 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL, | |
63 | 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, | |
64 | 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, | |
65 | 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, | |
66 | 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL, | |
67 | }; | |
68 | ||
69 | #define e0(x) (RORu64(x,28) ^ RORu64(x,34) ^ RORu64(x,39)) | |
70 | #define e1(x) (RORu64(x,14) ^ RORu64(x,18) ^ RORu64(x,41)) | |
71 | #define s0(x) (RORu64(x, 1) ^ RORu64(x, 8) ^ (x >> 7)) | |
72 | #define s1(x) (RORu64(x,19) ^ RORu64(x,61) ^ (x >> 6)) | |
73 | ||
1da177e4 LT |
74 | static inline void LOAD_OP(int I, u64 *W, const u8 *input) |
75 | { | |
76 | W[I] = __be64_to_cpu( ((__be64*)(input))[I] ); | |
77 | } | |
78 | ||
79 | static inline void BLEND_OP(int I, u64 *W) | |
80 | { | |
51fc6dc8 | 81 | W[I % 16] += s1(W[(I-2) % 16]) + W[(I-7) % 16] + s0(W[(I-15) % 16]); |
1da177e4 LT |
82 | } |
83 | ||
84 | static void | |
f9e2bca6 | 85 | sha512_transform(u64 *state, const u8 *input) |
1da177e4 LT |
86 | { |
87 | u64 a, b, c, d, e, f, g, h, t1, t2; | |
88 | ||
89 | int i; | |
51fc6dc8 | 90 | u64 W[16]; |
1da177e4 LT |
91 | |
92 | /* load the input */ | |
93 | for (i = 0; i < 16; i++) | |
94 | LOAD_OP(i, W, input); | |
95 | ||
1da177e4 | 96 | /* load the state into our registers */ |
78f8b3a2 JG |
97 | a=state[0]; b=state[1]; c=state[2]; d=state[3]; |
98 | e=state[4]; f=state[5]; g=state[6]; h=state[7]; | |
99 | ||
51fc6dc8 AD |
100 | #define SHA512_0_15(i, a, b, c, d, e, f, g, h) \ |
101 | t1 = h + e1(e) + Ch(e, f, g) + sha512_K[i] + W[i]; \ | |
102 | t2 = e0(a) + Maj(a, b, c); \ | |
103 | d += t1; \ | |
104 | h = t1 + t2 | |
105 | ||
106 | #define SHA512_16_79(i, a, b, c, d, e, f, g, h) \ | |
107 | BLEND_OP(i, W); \ | |
108 | t1 = h + e1(e) + Ch(e, f, g) + sha512_K[i] + W[(i)%16]; \ | |
109 | t2 = e0(a) + Maj(a, b, c); \ | |
110 | d += t1; \ | |
111 | h = t1 + t2 | |
112 | ||
113 | for (i = 0; i < 16; i += 8) { | |
114 | SHA512_0_15(i, a, b, c, d, e, f, g, h); | |
115 | SHA512_0_15(i + 1, h, a, b, c, d, e, f, g); | |
116 | SHA512_0_15(i + 2, g, h, a, b, c, d, e, f); | |
117 | SHA512_0_15(i + 3, f, g, h, a, b, c, d, e); | |
118 | SHA512_0_15(i + 4, e, f, g, h, a, b, c, d); | |
119 | SHA512_0_15(i + 5, d, e, f, g, h, a, b, c); | |
120 | SHA512_0_15(i + 6, c, d, e, f, g, h, a, b); | |
121 | SHA512_0_15(i + 7, b, c, d, e, f, g, h, a); | |
122 | } | |
123 | for (i = 16; i < 80; i += 8) { | |
124 | SHA512_16_79(i, a, b, c, d, e, f, g, h); | |
125 | SHA512_16_79(i + 1, h, a, b, c, d, e, f, g); | |
126 | SHA512_16_79(i + 2, g, h, a, b, c, d, e, f); | |
127 | SHA512_16_79(i + 3, f, g, h, a, b, c, d, e); | |
128 | SHA512_16_79(i + 4, e, f, g, h, a, b, c, d); | |
129 | SHA512_16_79(i + 5, d, e, f, g, h, a, b, c); | |
130 | SHA512_16_79(i + 6, c, d, e, f, g, h, a, b); | |
131 | SHA512_16_79(i + 7, b, c, d, e, f, g, h, a); | |
1da177e4 | 132 | } |
78f8b3a2 JG |
133 | |
134 | state[0] += a; state[1] += b; state[2] += c; state[3] += d; | |
135 | state[4] += e; state[5] += f; state[6] += g; state[7] += h; | |
1da177e4 LT |
136 | |
137 | /* erase our data */ | |
138 | a = b = c = d = e = f = g = h = t1 = t2 = 0; | |
139 | } | |
140 | ||
bd9d20db AKR |
141 | static int |
142 | sha512_init(struct shash_desc *desc) | |
1da177e4 | 143 | { |
1f38ad83 | 144 | struct sha512_state *sctx = shash_desc_ctx(desc); |
5265eeb2 JG |
145 | sctx->state[0] = SHA512_H0; |
146 | sctx->state[1] = SHA512_H1; | |
147 | sctx->state[2] = SHA512_H2; | |
148 | sctx->state[3] = SHA512_H3; | |
149 | sctx->state[4] = SHA512_H4; | |
150 | sctx->state[5] = SHA512_H5; | |
151 | sctx->state[6] = SHA512_H6; | |
152 | sctx->state[7] = SHA512_H7; | |
13887ed6 | 153 | sctx->count[0] = sctx->count[1] = 0; |
bd9d20db AKR |
154 | |
155 | return 0; | |
1da177e4 LT |
156 | } |
157 | ||
bd9d20db AKR |
158 | static int |
159 | sha384_init(struct shash_desc *desc) | |
1da177e4 | 160 | { |
1f38ad83 | 161 | struct sha512_state *sctx = shash_desc_ctx(desc); |
5265eeb2 JG |
162 | sctx->state[0] = SHA384_H0; |
163 | sctx->state[1] = SHA384_H1; | |
164 | sctx->state[2] = SHA384_H2; | |
165 | sctx->state[3] = SHA384_H3; | |
166 | sctx->state[4] = SHA384_H4; | |
167 | sctx->state[5] = SHA384_H5; | |
168 | sctx->state[6] = SHA384_H6; | |
169 | sctx->state[7] = SHA384_H7; | |
13887ed6 | 170 | sctx->count[0] = sctx->count[1] = 0; |
bd9d20db AKR |
171 | |
172 | return 0; | |
1da177e4 LT |
173 | } |
174 | ||
bd9d20db AKR |
175 | static int |
176 | sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len) | |
1da177e4 | 177 | { |
1f38ad83 | 178 | struct sha512_state *sctx = shash_desc_ctx(desc); |
1da177e4 LT |
179 | |
180 | unsigned int i, index, part_len; | |
181 | ||
182 | /* Compute number of bytes mod 128 */ | |
13887ed6 HX |
183 | index = sctx->count[0] & 0x7f; |
184 | ||
185 | /* Update number of bytes */ | |
186 | if (!(sctx->count[0] += len)) | |
187 | sctx->count[1]++; | |
78f8b3a2 | 188 | |
1da177e4 | 189 | part_len = 128 - index; |
78f8b3a2 | 190 | |
1da177e4 LT |
191 | /* Transform as many times as possible. */ |
192 | if (len >= part_len) { | |
193 | memcpy(&sctx->buf[index], data, part_len); | |
f9e2bca6 | 194 | sha512_transform(sctx->state, sctx->buf); |
1da177e4 LT |
195 | |
196 | for (i = part_len; i + 127 < len; i+=128) | |
f9e2bca6 | 197 | sha512_transform(sctx->state, &data[i]); |
1da177e4 LT |
198 | |
199 | index = 0; | |
200 | } else { | |
201 | i = 0; | |
202 | } | |
203 | ||
204 | /* Buffer remaining input */ | |
205 | memcpy(&sctx->buf[index], &data[i], len - i); | |
bd9d20db AKR |
206 | |
207 | return 0; | |
1da177e4 LT |
208 | } |
209 | ||
bd9d20db AKR |
210 | static int |
211 | sha512_final(struct shash_desc *desc, u8 *hash) | |
1da177e4 | 212 | { |
1f38ad83 | 213 | struct sha512_state *sctx = shash_desc_ctx(desc); |
1da177e4 | 214 | static u8 padding[128] = { 0x80, }; |
06ace7a9 | 215 | __be64 *dst = (__be64 *)hash; |
13887ed6 | 216 | __be64 bits[2]; |
1da177e4 | 217 | unsigned int index, pad_len; |
06ace7a9 | 218 | int i; |
1da177e4 LT |
219 | |
220 | /* Save number of bits */ | |
13887ed6 HX |
221 | bits[1] = cpu_to_be64(sctx->count[0] << 3); |
222 | bits[0] = cpu_to_be64(sctx->count[1] << 3 | sctx->count[0] >> 61); | |
1da177e4 LT |
223 | |
224 | /* Pad out to 112 mod 128. */ | |
13887ed6 | 225 | index = sctx->count[0] & 0x7f; |
1da177e4 | 226 | pad_len = (index < 112) ? (112 - index) : ((128+112) - index); |
bd9d20db | 227 | sha512_update(desc, padding, pad_len); |
1da177e4 LT |
228 | |
229 | /* Append length (before padding) */ | |
bd9d20db | 230 | sha512_update(desc, (const u8 *)bits, sizeof(bits)); |
1da177e4 LT |
231 | |
232 | /* Store state in digest */ | |
06ace7a9 HX |
233 | for (i = 0; i < 8; i++) |
234 | dst[i] = cpu_to_be64(sctx->state[i]); | |
235 | ||
1da177e4 | 236 | /* Zeroize sensitive information. */ |
1f38ad83 | 237 | memset(sctx, 0, sizeof(struct sha512_state)); |
bd9d20db AKR |
238 | |
239 | return 0; | |
1da177e4 LT |
240 | } |
241 | ||
bd9d20db | 242 | static int sha384_final(struct shash_desc *desc, u8 *hash) |
1da177e4 | 243 | { |
bd9d20db | 244 | u8 D[64]; |
1da177e4 | 245 | |
bd9d20db | 246 | sha512_final(desc, D); |
1da177e4 | 247 | |
bd9d20db AKR |
248 | memcpy(hash, D, 48); |
249 | memset(D, 0, 64); | |
250 | ||
251 | return 0; | |
1da177e4 LT |
252 | } |
253 | ||
bd9d20db AKR |
254 | static struct shash_alg sha512 = { |
255 | .digestsize = SHA512_DIGEST_SIZE, | |
256 | .init = sha512_init, | |
257 | .update = sha512_update, | |
258 | .final = sha512_final, | |
1f38ad83 | 259 | .descsize = sizeof(struct sha512_state), |
bd9d20db AKR |
260 | .base = { |
261 | .cra_name = "sha512", | |
262 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, | |
263 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
264 | .cra_module = THIS_MODULE, | |
265 | } | |
1da177e4 LT |
266 | }; |
267 | ||
bd9d20db AKR |
268 | static struct shash_alg sha384 = { |
269 | .digestsize = SHA384_DIGEST_SIZE, | |
270 | .init = sha384_init, | |
271 | .update = sha512_update, | |
272 | .final = sha384_final, | |
1f38ad83 | 273 | .descsize = sizeof(struct sha512_state), |
bd9d20db AKR |
274 | .base = { |
275 | .cra_name = "sha384", | |
276 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, | |
277 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
278 | .cra_module = THIS_MODULE, | |
279 | } | |
1da177e4 LT |
280 | }; |
281 | ||
3af5b90b | 282 | static int __init sha512_generic_mod_init(void) |
1da177e4 LT |
283 | { |
284 | int ret = 0; | |
285 | ||
bd9d20db | 286 | if ((ret = crypto_register_shash(&sha384)) < 0) |
1da177e4 | 287 | goto out; |
bd9d20db AKR |
288 | if ((ret = crypto_register_shash(&sha512)) < 0) |
289 | crypto_unregister_shash(&sha384); | |
1da177e4 LT |
290 | out: |
291 | return ret; | |
292 | } | |
293 | ||
3af5b90b | 294 | static void __exit sha512_generic_mod_fini(void) |
1da177e4 | 295 | { |
bd9d20db AKR |
296 | crypto_unregister_shash(&sha384); |
297 | crypto_unregister_shash(&sha512); | |
1da177e4 LT |
298 | } |
299 | ||
3af5b90b KB |
300 | module_init(sha512_generic_mod_init); |
301 | module_exit(sha512_generic_mod_fini); | |
1da177e4 LT |
302 | |
303 | MODULE_LICENSE("GPL"); | |
304 | MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms"); | |
78f8b3a2 JG |
305 | |
306 | MODULE_ALIAS("sha384"); | |
307 | MODULE_ALIAS("sha512"); |