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 */
13#include <crypto/internal/hash.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/mm.h>
17#include <linux/init.h>
18#include <linux/crypto.h>
19#include <linux/types.h>
20#include <crypto/sha.h>
21#include <crypto/sha512_base.h>
22#include <linux/percpu.h>
23#include <asm/byteorder.h>
24#include <asm/unaligned.h>
25
26const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE] = {
27 0x38, 0xb0, 0x60, 0xa7, 0x51, 0xac, 0x96, 0x38,
28 0x4c, 0xd9, 0x32, 0x7e, 0xb1, 0xb1, 0xe3, 0x6a,
29 0x21, 0xfd, 0xb7, 0x11, 0x14, 0xbe, 0x07, 0x43,
30 0x4c, 0x0c, 0xc7, 0xbf, 0x63, 0xf6, 0xe1, 0xda,
31 0x27, 0x4e, 0xde, 0xbf, 0xe7, 0x6f, 0x65, 0xfb,
32 0xd5, 0x1a, 0xd2, 0xf1, 0x48, 0x98, 0xb9, 0x5b
33};
34EXPORT_SYMBOL_GPL(sha384_zero_message_hash);
35
36const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE] = {
37 0xcf, 0x83, 0xe1, 0x35, 0x7e, 0xef, 0xb8, 0xbd,
38 0xf1, 0x54, 0x28, 0x50, 0xd6, 0x6d, 0x80, 0x07,
39 0xd6, 0x20, 0xe4, 0x05, 0x0b, 0x57, 0x15, 0xdc,
40 0x83, 0xf4, 0xa9, 0x21, 0xd3, 0x6c, 0xe9, 0xce,
41 0x47, 0xd0, 0xd1, 0x3c, 0x5d, 0x85, 0xf2, 0xb0,
42 0xff, 0x83, 0x18, 0xd2, 0x87, 0x7e, 0xec, 0x2f,
43 0x63, 0xb9, 0x31, 0xbd, 0x47, 0x41, 0x7a, 0x81,
44 0xa5, 0x38, 0x32, 0x7a, 0xf9, 0x27, 0xda, 0x3e
45};
46EXPORT_SYMBOL_GPL(sha512_zero_message_hash);
47
48static inline u64 Ch(u64 x, u64 y, u64 z)
49{
50 return z ^ (x & (y ^ z));
51}
52
53static inline u64 Maj(u64 x, u64 y, u64 z)
54{
55 return (x & y) | (z & (x | y));
56}
57
58static const u64 sha512_K[80] = {
59 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
60 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
61 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
62 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
63 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
64 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
65 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
66 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
67 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
68 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
69 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
70 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
71 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
72 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
73 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
74 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
75 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
76 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
77 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
78 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
79 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
80 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
81 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
82 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
83 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
84 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
85 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
86};
87
88#define e0(x) (ror64(x,28) ^ ror64(x,34) ^ ror64(x,39))
89#define e1(x) (ror64(x,14) ^ ror64(x,18) ^ ror64(x,41))
90#define s0(x) (ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7))
91#define s1(x) (ror64(x,19) ^ ror64(x,61) ^ (x >> 6))
92
93static inline void LOAD_OP(int I, u64 *W, const u8 *input)
94{
95 W[I] = get_unaligned_be64((__u64 *)input + I);
96}
97
98static inline void BLEND_OP(int I, u64 *W)
99{
100 W[I & 15] += s1(W[(I-2) & 15]) + W[(I-7) & 15] + s0(W[(I-15) & 15]);
101}
102
103static void
104sha512_transform(u64 *state, const u8 *input)
105{
106 u64 a, b, c, d, e, f, g, h, t1, t2;
107
108 int i;
109 u64 W[16];
110
111 /* load the state into our registers */
112 a=state[0]; b=state[1]; c=state[2]; d=state[3];
113 e=state[4]; f=state[5]; g=state[6]; h=state[7];
114
115 /* now iterate */
116 for (i=0; i<80; i+=8) {
117 if (!(i & 8)) {
118 int j;
119
120 if (i < 16) {
121 /* load the input */
122 for (j = 0; j < 16; j++)
123 LOAD_OP(i + j, W, input);
124 } else {
125 for (j = 0; j < 16; j++) {
126 BLEND_OP(i + j, W);
127 }
128 }
129 }
130
131 t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[(i & 15)];
132 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
133 t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[(i & 15) + 1];
134 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
135 t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[(i & 15) + 2];
136 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
137 t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[(i & 15) + 3];
138 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
139 t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[(i & 15) + 4];
140 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
141 t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[(i & 15) + 5];
142 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
143 t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[(i & 15) + 6];
144 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
145 t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[(i & 15) + 7];
146 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
147 }
148
149 state[0] += a; state[1] += b; state[2] += c; state[3] += d;
150 state[4] += e; state[5] += f; state[6] += g; state[7] += h;
151
152 /* erase our data */
153 a = b = c = d = e = f = g = h = t1 = t2 = 0;
154}
155
156static void sha512_generic_block_fn(struct sha512_state *sst, u8 const *src,
157 int blocks)
158{
159 while (blocks--) {
160 sha512_transform(sst->state, src);
161 src += SHA512_BLOCK_SIZE;
162 }
163}
164
165int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
166 unsigned int len)
167{
168 return sha512_base_do_update(desc, data, len, sha512_generic_block_fn);
169}
170EXPORT_SYMBOL(crypto_sha512_update);
171
172static int sha512_final(struct shash_desc *desc, u8 *hash)
173{
174 sha512_base_do_finalize(desc, sha512_generic_block_fn);
175 return sha512_base_finish(desc, hash);
176}
177
178int crypto_sha512_finup(struct shash_desc *desc, const u8 *data,
179 unsigned int len, u8 *hash)
180{
181 sha512_base_do_update(desc, data, len, sha512_generic_block_fn);
182 return sha512_final(desc, hash);
183}
184EXPORT_SYMBOL(crypto_sha512_finup);
185
186static struct shash_alg sha512_algs[2] = { {
187 .digestsize = SHA512_DIGEST_SIZE,
188 .init = sha512_base_init,
189 .update = crypto_sha512_update,
190 .final = sha512_final,
191 .finup = crypto_sha512_finup,
192 .descsize = sizeof(struct sha512_state),
193 .base = {
194 .cra_name = "sha512",
195 .cra_driver_name = "sha512-generic",
196 .cra_priority = 100,
197 .cra_blocksize = SHA512_BLOCK_SIZE,
198 .cra_module = THIS_MODULE,
199 }
200}, {
201 .digestsize = SHA384_DIGEST_SIZE,
202 .init = sha384_base_init,
203 .update = crypto_sha512_update,
204 .final = sha512_final,
205 .finup = crypto_sha512_finup,
206 .descsize = sizeof(struct sha512_state),
207 .base = {
208 .cra_name = "sha384",
209 .cra_driver_name = "sha384-generic",
210 .cra_priority = 100,
211 .cra_blocksize = SHA384_BLOCK_SIZE,
212 .cra_module = THIS_MODULE,
213 }
214} };
215
216static int __init sha512_generic_mod_init(void)
217{
218 return crypto_register_shashes(sha512_algs, ARRAY_SIZE(sha512_algs));
219}
220
221static void __exit sha512_generic_mod_fini(void)
222{
223 crypto_unregister_shashes(sha512_algs, ARRAY_SIZE(sha512_algs));
224}
225
226module_init(sha512_generic_mod_init);
227module_exit(sha512_generic_mod_fini);
228
229MODULE_LICENSE("GPL");
230MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms");
231
232MODULE_ALIAS_CRYPTO("sha384");
233MODULE_ALIAS_CRYPTO("sha384-generic");
234MODULE_ALIAS_CRYPTO("sha512");
235MODULE_ALIAS_CRYPTO("sha512-generic");
236