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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
26static inline u64 Ch(u64 x, u64 y, u64 z)
27{
28 return z ^ (x & (y ^ z));
29}
30
31static inline u64 Maj(u64 x, u64 y, u64 z)
32{
33 return (x & y) | (z & (x | y));
34}
35
36static const u64 sha512_K[80] = {
37 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
38 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
39 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
40 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
41 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
42 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
43 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
44 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
45 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
46 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
47 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
48 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
49 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
50 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
51 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
52 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
53 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
54 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
55 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
56 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
57 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
58 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
59 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
60 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
61 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
62 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
63 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
64};
65
66#define e0(x) (ror64(x,28) ^ ror64(x,34) ^ ror64(x,39))
67#define e1(x) (ror64(x,14) ^ ror64(x,18) ^ ror64(x,41))
68#define s0(x) (ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7))
69#define s1(x) (ror64(x,19) ^ ror64(x,61) ^ (x >> 6))
70
71static inline void LOAD_OP(int I, u64 *W, const u8 *input)
72{
73 W[I] = get_unaligned_be64((__u64 *)input + I);
74}
75
76static inline void BLEND_OP(int I, u64 *W)
77{
78 W[I & 15] += s1(W[(I-2) & 15]) + W[(I-7) & 15] + s0(W[(I-15) & 15]);
79}
80
81static void
82sha512_transform(u64 *state, const u8 *input)
83{
84 u64 a, b, c, d, e, f, g, h, t1, t2;
85
86 int i;
87 u64 W[16];
88
89
90 a=state[0]; b=state[1]; c=state[2]; d=state[3];
91 e=state[4]; f=state[5]; g=state[6]; h=state[7];
92
93
94 for (i=0; i<80; i+=8) {
95 if (!(i & 8)) {
96 int j;
97
98 if (i < 16) {
99
100 for (j = 0; j < 16; j++)
101 LOAD_OP(i + j, W, input);
102 } else {
103 for (j = 0; j < 16; j++) {
104 BLEND_OP(i + j, W);
105 }
106 }
107 }
108
109 t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[(i & 15)];
110 t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
111 t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[(i & 15) + 1];
112 t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
113 t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[(i & 15) + 2];
114 t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
115 t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[(i & 15) + 3];
116 t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
117 t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[(i & 15) + 4];
118 t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
119 t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[(i & 15) + 5];
120 t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
121 t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[(i & 15) + 6];
122 t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
123 t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[(i & 15) + 7];
124 t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
125 }
126
127 state[0] += a; state[1] += b; state[2] += c; state[3] += d;
128 state[4] += e; state[5] += f; state[6] += g; state[7] += h;
129
130
131 a = b = c = d = e = f = g = h = t1 = t2 = 0;
132}
133
134static void sha512_generic_block_fn(struct sha512_state *sst, u8 const *src,
135 int blocks)
136{
137 while (blocks--) {
138 sha512_transform(sst->state, src);
139 src += SHA512_BLOCK_SIZE;
140 }
141}
142
143int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
144 unsigned int len)
145{
146 return sha512_base_do_update(desc, data, len, sha512_generic_block_fn);
147}
148EXPORT_SYMBOL(crypto_sha512_update);
149
150static int sha512_final(struct shash_desc *desc, u8 *hash)
151{
152 sha512_base_do_finalize(desc, sha512_generic_block_fn);
153 return sha512_base_finish(desc, hash);
154}
155
156int crypto_sha512_finup(struct shash_desc *desc, const u8 *data,
157 unsigned int len, u8 *hash)
158{
159 sha512_base_do_update(desc, data, len, sha512_generic_block_fn);
160 return sha512_final(desc, hash);
161}
162EXPORT_SYMBOL(crypto_sha512_finup);
163
164static struct shash_alg sha512_algs[2] = { {
165 .digestsize = SHA512_DIGEST_SIZE,
166 .init = sha512_base_init,
167 .update = crypto_sha512_update,
168 .final = sha512_final,
169 .finup = crypto_sha512_finup,
170 .descsize = sizeof(struct sha512_state),
171 .base = {
172 .cra_name = "sha512",
173 .cra_driver_name = "sha512-generic",
174 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
175 .cra_blocksize = SHA512_BLOCK_SIZE,
176 .cra_module = THIS_MODULE,
177 }
178}, {
179 .digestsize = SHA384_DIGEST_SIZE,
180 .init = sha384_base_init,
181 .update = crypto_sha512_update,
182 .final = sha512_final,
183 .finup = crypto_sha512_finup,
184 .descsize = sizeof(struct sha512_state),
185 .base = {
186 .cra_name = "sha384",
187 .cra_driver_name = "sha384-generic",
188 .cra_flags = CRYPTO_ALG_TYPE_SHASH,
189 .cra_blocksize = SHA384_BLOCK_SIZE,
190 .cra_module = THIS_MODULE,
191 }
192} };
193
194static int __init sha512_generic_mod_init(void)
195{
196 return crypto_register_shashes(sha512_algs, ARRAY_SIZE(sha512_algs));
197}
198
199static void __exit sha512_generic_mod_fini(void)
200{
201 crypto_unregister_shashes(sha512_algs, ARRAY_SIZE(sha512_algs));
202}
203
204module_init(sha512_generic_mod_init);
205module_exit(sha512_generic_mod_fini);
206
207MODULE_LICENSE("GPL");
208MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms");
209
210MODULE_ALIAS_CRYPTO("sha384");
211MODULE_ALIAS_CRYPTO("sha384-generic");
212MODULE_ALIAS_CRYPTO("sha512");
213MODULE_ALIAS_CRYPTO("sha512-generic");
214
