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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> |
ca142584 | 21 | #include <crypto/sha512_base.h> |
f9e2bca6 | 22 | #include <linux/percpu.h> |
1da177e4 | 23 | #include <asm/byteorder.h> |
be34c4ef | 24 | #include <asm/unaligned.h> |
1da177e4 | 25 | |
30c217ef AT |
26 | const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE] = { |
27 | 0xcf, 0x83, 0xe1, 0x35, 0x7e, 0xef, 0xb8, 0xbd, | |
28 | 0xf1, 0x54, 0x28, 0x50, 0xd6, 0x6d, 0x80, 0x07, | |
29 | 0xd6, 0x20, 0xe4, 0x05, 0x0b, 0x57, 0x15, 0xdc, | |
30 | 0x83, 0xf4, 0xa9, 0x21, 0xd3, 0x6c, 0xe9, 0xce, | |
31 | 0x47, 0xd0, 0xd1, 0x3c, 0x5d, 0x85, 0xf2, 0xb0, | |
32 | 0xff, 0x83, 0x18, 0xd2, 0x87, 0x7e, 0xec, 0x2f, | |
33 | 0x63, 0xb9, 0x31, 0xbd, 0x47, 0x41, 0x7a, 0x81, | |
34 | 0xa5, 0x38, 0x32, 0x7a, 0xf9, 0x27, 0xda, 0x3e | |
35 | }; | |
36 | EXPORT_SYMBOL_GPL(sha512_zero_message_hash); | |
37 | ||
1da177e4 LT |
38 | static inline u64 Ch(u64 x, u64 y, u64 z) |
39 | { | |
40 | return z ^ (x & (y ^ z)); | |
41 | } | |
42 | ||
43 | static inline u64 Maj(u64 x, u64 y, u64 z) | |
44 | { | |
45 | return (x & y) | (z & (x | y)); | |
46 | } | |
47 | ||
1da177e4 LT |
48 | static const u64 sha512_K[80] = { |
49 | 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, | |
50 | 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, | |
51 | 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL, | |
52 | 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, | |
53 | 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, | |
54 | 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, | |
55 | 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL, | |
56 | 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, | |
57 | 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, | |
58 | 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, | |
59 | 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL, | |
60 | 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, | |
61 | 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, | |
62 | 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, | |
63 | 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL, | |
64 | 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, | |
65 | 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, | |
66 | 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, | |
67 | 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL, | |
68 | 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, | |
69 | 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, | |
70 | 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, | |
71 | 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL, | |
72 | 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, | |
73 | 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, | |
74 | 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, | |
75 | 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL, | |
76 | }; | |
77 | ||
f2ea0f5f AD |
78 | #define e0(x) (ror64(x,28) ^ ror64(x,34) ^ ror64(x,39)) |
79 | #define e1(x) (ror64(x,14) ^ ror64(x,18) ^ ror64(x,41)) | |
80 | #define s0(x) (ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7)) | |
81 | #define s1(x) (ror64(x,19) ^ ror64(x,61) ^ (x >> 6)) | |
1da177e4 | 82 | |
1da177e4 LT |
83 | static inline void LOAD_OP(int I, u64 *W, const u8 *input) |
84 | { | |
be34c4ef | 85 | W[I] = get_unaligned_be64((__u64 *)input + I); |
1da177e4 LT |
86 | } |
87 | ||
88 | static inline void BLEND_OP(int I, u64 *W) | |
89 | { | |
58d7d18b | 90 | W[I & 15] += s1(W[(I-2) & 15]) + W[(I-7) & 15] + s0(W[(I-15) & 15]); |
1da177e4 LT |
91 | } |
92 | ||
93 | static void | |
f9e2bca6 | 94 | sha512_transform(u64 *state, const u8 *input) |
1da177e4 LT |
95 | { |
96 | u64 a, b, c, d, e, f, g, h, t1, t2; | |
97 | ||
98 | int i; | |
51fc6dc8 | 99 | u64 W[16]; |
1da177e4 | 100 | |
1da177e4 | 101 | /* load the state into our registers */ |
78f8b3a2 JG |
102 | a=state[0]; b=state[1]; c=state[2]; d=state[3]; |
103 | e=state[4]; f=state[5]; g=state[6]; h=state[7]; | |
104 | ||
3a92d687 HX |
105 | /* now iterate */ |
106 | for (i=0; i<80; i+=8) { | |
107 | if (!(i & 8)) { | |
108 | int j; | |
109 | ||
110 | if (i < 16) { | |
111 | /* load the input */ | |
112 | for (j = 0; j < 16; j++) | |
113 | LOAD_OP(i + j, W, input); | |
114 | } else { | |
115 | for (j = 0; j < 16; j++) { | |
116 | BLEND_OP(i + j, W); | |
117 | } | |
118 | } | |
119 | } | |
120 | ||
121 | t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[(i & 15)]; | |
122 | t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2; | |
123 | t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[(i & 15) + 1]; | |
124 | t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2; | |
125 | t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[(i & 15) + 2]; | |
126 | t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2; | |
127 | t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[(i & 15) + 3]; | |
128 | t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2; | |
129 | t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[(i & 15) + 4]; | |
130 | t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2; | |
131 | t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[(i & 15) + 5]; | |
132 | t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2; | |
133 | t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[(i & 15) + 6]; | |
134 | t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2; | |
135 | t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[(i & 15) + 7]; | |
136 | t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2; | |
1da177e4 | 137 | } |
78f8b3a2 JG |
138 | |
139 | state[0] += a; state[1] += b; state[2] += c; state[3] += d; | |
140 | state[4] += e; state[5] += f; state[6] += g; state[7] += h; | |
1da177e4 LT |
141 | |
142 | /* erase our data */ | |
143 | a = b = c = d = e = f = g = h = t1 = t2 = 0; | |
144 | } | |
145 | ||
ca142584 AB |
146 | static void sha512_generic_block_fn(struct sha512_state *sst, u8 const *src, |
147 | int blocks) | |
1da177e4 | 148 | { |
ca142584 AB |
149 | while (blocks--) { |
150 | sha512_transform(sst->state, src); | |
151 | src += SHA512_BLOCK_SIZE; | |
152 | } | |
1da177e4 LT |
153 | } |
154 | ||
bf70fa9d TC |
155 | int crypto_sha512_update(struct shash_desc *desc, const u8 *data, |
156 | unsigned int len) | |
1da177e4 | 157 | { |
ca142584 | 158 | return sha512_base_do_update(desc, data, len, sha512_generic_block_fn); |
1da177e4 | 159 | } |
bf70fa9d | 160 | EXPORT_SYMBOL(crypto_sha512_update); |
1da177e4 | 161 | |
ca142584 | 162 | static int sha512_final(struct shash_desc *desc, u8 *hash) |
1da177e4 | 163 | { |
ca142584 AB |
164 | sha512_base_do_finalize(desc, sha512_generic_block_fn); |
165 | return sha512_base_finish(desc, hash); | |
1da177e4 LT |
166 | } |
167 | ||
ca142584 AB |
168 | int crypto_sha512_finup(struct shash_desc *desc, const u8 *data, |
169 | unsigned int len, u8 *hash) | |
1da177e4 | 170 | { |
ca142584 AB |
171 | sha512_base_do_update(desc, data, len, sha512_generic_block_fn); |
172 | return sha512_final(desc, hash); | |
1da177e4 | 173 | } |
ca142584 | 174 | EXPORT_SYMBOL(crypto_sha512_finup); |
1da177e4 | 175 | |
648b2a10 | 176 | static struct shash_alg sha512_algs[2] = { { |
bd9d20db | 177 | .digestsize = SHA512_DIGEST_SIZE, |
ca142584 | 178 | .init = sha512_base_init, |
bf70fa9d | 179 | .update = crypto_sha512_update, |
bd9d20db | 180 | .final = sha512_final, |
ca142584 | 181 | .finup = crypto_sha512_finup, |
1f38ad83 | 182 | .descsize = sizeof(struct sha512_state), |
bd9d20db AKR |
183 | .base = { |
184 | .cra_name = "sha512", | |
d3295814 | 185 | .cra_driver_name = "sha512-generic", |
bd9d20db AKR |
186 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
187 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
188 | .cra_module = THIS_MODULE, | |
189 | } | |
648b2a10 | 190 | }, { |
bd9d20db | 191 | .digestsize = SHA384_DIGEST_SIZE, |
ca142584 | 192 | .init = sha384_base_init, |
bf70fa9d | 193 | .update = crypto_sha512_update, |
ca142584 AB |
194 | .final = sha512_final, |
195 | .finup = crypto_sha512_finup, | |
1f38ad83 | 196 | .descsize = sizeof(struct sha512_state), |
bd9d20db AKR |
197 | .base = { |
198 | .cra_name = "sha384", | |
d3295814 | 199 | .cra_driver_name = "sha384-generic", |
bd9d20db AKR |
200 | .cra_flags = CRYPTO_ALG_TYPE_SHASH, |
201 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
202 | .cra_module = THIS_MODULE, | |
203 | } | |
648b2a10 | 204 | } }; |
1da177e4 | 205 | |
3af5b90b | 206 | static int __init sha512_generic_mod_init(void) |
1da177e4 | 207 | { |
648b2a10 | 208 | return crypto_register_shashes(sha512_algs, ARRAY_SIZE(sha512_algs)); |
1da177e4 LT |
209 | } |
210 | ||
3af5b90b | 211 | static void __exit sha512_generic_mod_fini(void) |
1da177e4 | 212 | { |
648b2a10 | 213 | crypto_unregister_shashes(sha512_algs, ARRAY_SIZE(sha512_algs)); |
1da177e4 LT |
214 | } |
215 | ||
3af5b90b KB |
216 | module_init(sha512_generic_mod_init); |
217 | module_exit(sha512_generic_mod_fini); | |
1da177e4 LT |
218 | |
219 | MODULE_LICENSE("GPL"); | |
220 | MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms"); | |
78f8b3a2 | 221 | |
5d26a105 | 222 | MODULE_ALIAS_CRYPTO("sha384"); |
3e14dcf7 | 223 | MODULE_ALIAS_CRYPTO("sha384-generic"); |
5d26a105 | 224 | MODULE_ALIAS_CRYPTO("sha512"); |
3e14dcf7 | 225 | MODULE_ALIAS_CRYPTO("sha512-generic"); |