2 * Copyright (C) 2015 Felix Fietkau <nbd@openwrt.org>
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 * Daniel Beer <dlbeer@gmail.com>, 22 Apr 2014
20 * This file is in the public domain.
25 static const uint64_t sha512_initial_state
[8] = {
26 0x6a09e667f3bcc908LL
, 0xbb67ae8584caa73bLL
,
27 0x3c6ef372fe94f82bLL
, 0xa54ff53a5f1d36f1LL
,
28 0x510e527fade682d1LL
, 0x9b05688c2b3e6c1fLL
,
29 0x1f83d9abfb41bd6bLL
, 0x5be0cd19137e2179LL
,
32 static const uint64_t round_k
[80] = {
33 0x428a2f98d728ae22LL
, 0x7137449123ef65cdLL
,
34 0xb5c0fbcfec4d3b2fLL
, 0xe9b5dba58189dbbcLL
,
35 0x3956c25bf348b538LL
, 0x59f111f1b605d019LL
,
36 0x923f82a4af194f9bLL
, 0xab1c5ed5da6d8118LL
,
37 0xd807aa98a3030242LL
, 0x12835b0145706fbeLL
,
38 0x243185be4ee4b28cLL
, 0x550c7dc3d5ffb4e2LL
,
39 0x72be5d74f27b896fLL
, 0x80deb1fe3b1696b1LL
,
40 0x9bdc06a725c71235LL
, 0xc19bf174cf692694LL
,
41 0xe49b69c19ef14ad2LL
, 0xefbe4786384f25e3LL
,
42 0x0fc19dc68b8cd5b5LL
, 0x240ca1cc77ac9c65LL
,
43 0x2de92c6f592b0275LL
, 0x4a7484aa6ea6e483LL
,
44 0x5cb0a9dcbd41fbd4LL
, 0x76f988da831153b5LL
,
45 0x983e5152ee66dfabLL
, 0xa831c66d2db43210LL
,
46 0xb00327c898fb213fLL
, 0xbf597fc7beef0ee4LL
,
47 0xc6e00bf33da88fc2LL
, 0xd5a79147930aa725LL
,
48 0x06ca6351e003826fLL
, 0x142929670a0e6e70LL
,
49 0x27b70a8546d22ffcLL
, 0x2e1b21385c26c926LL
,
50 0x4d2c6dfc5ac42aedLL
, 0x53380d139d95b3dfLL
,
51 0x650a73548baf63deLL
, 0x766a0abb3c77b2a8LL
,
52 0x81c2c92e47edaee6LL
, 0x92722c851482353bLL
,
53 0xa2bfe8a14cf10364LL
, 0xa81a664bbc423001LL
,
54 0xc24b8b70d0f89791LL
, 0xc76c51a30654be30LL
,
55 0xd192e819d6ef5218LL
, 0xd69906245565a910LL
,
56 0xf40e35855771202aLL
, 0x106aa07032bbd1b8LL
,
57 0x19a4c116b8d2d0c8LL
, 0x1e376c085141ab53LL
,
58 0x2748774cdf8eeb99LL
, 0x34b0bcb5e19b48a8LL
,
59 0x391c0cb3c5c95a63LL
, 0x4ed8aa4ae3418acbLL
,
60 0x5b9cca4f7763e373LL
, 0x682e6ff3d6b2b8a3LL
,
61 0x748f82ee5defb2fcLL
, 0x78a5636f43172f60LL
,
62 0x84c87814a1f0ab72LL
, 0x8cc702081a6439ecLL
,
63 0x90befffa23631e28LL
, 0xa4506cebde82bde9LL
,
64 0xbef9a3f7b2c67915LL
, 0xc67178f2e372532bLL
,
65 0xca273eceea26619cLL
, 0xd186b8c721c0c207LL
,
66 0xeada7dd6cde0eb1eLL
, 0xf57d4f7fee6ed178LL
,
67 0x06f067aa72176fbaLL
, 0x0a637dc5a2c898a6LL
,
68 0x113f9804bef90daeLL
, 0x1b710b35131c471bLL
,
69 0x28db77f523047d84LL
, 0x32caab7b40c72493LL
,
70 0x3c9ebe0a15c9bebcLL
, 0x431d67c49c100d4cLL
,
71 0x4cc5d4becb3e42b6LL
, 0x597f299cfc657e2aLL
,
72 0x5fcb6fab3ad6faecLL
, 0x6c44198c4a475817LL
,
75 static inline uint64_t load64(const uint8_t *x
)
80 r
= (r
<< 8) | *(x
++);
81 r
= (r
<< 8) | *(x
++);
82 r
= (r
<< 8) | *(x
++);
83 r
= (r
<< 8) | *(x
++);
84 r
= (r
<< 8) | *(x
++);
85 r
= (r
<< 8) | *(x
++);
86 r
= (r
<< 8) | *(x
++);
91 static inline void store64(uint8_t *x
, uint64_t v
)
111 static inline uint64_t rot64(uint64_t x
, int bits
)
113 return (x
>> bits
) | (x
<< (64 - bits
));
117 sha512_block(struct sha512_state
*s
, const uint8_t *blk
)
120 uint64_t a
, b
, c
, d
, e
, f
, g
, h
;
123 for (i
= 0; i
< 16; i
++) {
138 for (i
= 0; i
< 80; i
++) {
139 /* Compute value of w[i + 16]. w[wrap(i)] is currently w[i] */
140 const uint64_t wi
= w
[i
& 15];
141 const uint64_t wi15
= w
[(i
+ 1) & 15];
142 const uint64_t wi2
= w
[(i
+ 14) & 15];
143 const uint64_t wi7
= w
[(i
+ 9) & 15];
145 rot64(wi15
, 1) ^ rot64(wi15
, 8) ^ (wi15
>> 7);
147 rot64(wi2
, 19) ^ rot64(wi2
, 61) ^ (wi2
>> 6);
149 /* Round calculations */
150 const uint64_t S0
= rot64(a
, 28) ^ rot64(a
, 34) ^ rot64(a
, 39);
151 const uint64_t S1
= rot64(e
, 14) ^ rot64(e
, 18) ^ rot64(e
, 41);
152 const uint64_t ch
= (e
& f
) ^ ((~e
) & g
);
153 const uint64_t temp1
= h
+ S1
+ ch
+ round_k
[i
] + wi
;
154 const uint64_t maj
= (a
& b
) ^ (a
& c
) ^ (b
& c
);
155 const uint64_t temp2
= S0
+ maj
;
157 /* Update round state */
167 /* w[wrap(i)] becomes w[i + 16] */
168 w
[i
& 15] = wi
+ s0
+ wi7
+ s1
;
182 void sha512_init(struct sha512_state
*s
)
184 memcpy(s
->h
, &sha512_initial_state
, sizeof(s
->h
));
188 void sha512_add(struct sha512_state
*s
, const void *data
, size_t len
)
190 unsigned int partial
= s
->len
& (SHA512_BLOCK_SIZE
- 1);
193 unsigned int cur
= SHA512_BLOCK_SIZE
- partial
;
198 memcpy(&s
->partial
[partial
], data
, cur
);
204 partial
= s
->len
& (SHA512_BLOCK_SIZE
- 1);
206 sha512_block(s
, s
->partial
);
209 while (len
>= SHA512_BLOCK_SIZE
) {
210 sha512_block(s
, data
);
212 s
->len
+= SHA512_BLOCK_SIZE
;
213 data
+= SHA512_BLOCK_SIZE
;
214 len
-= SHA512_BLOCK_SIZE
;
220 memcpy(s
->partial
, data
, len
);
224 void sha512_final(struct sha512_state
*s
, uint8_t *hash
)
226 size_t last_size
= s
->len
& (SHA512_BLOCK_SIZE
- 1);
227 unsigned int len
= SHA512_HASH_SIZE
;
230 s
->partial
[last_size
++] = 0x80;
231 if (last_size
< SHA512_BLOCK_SIZE
)
232 memset(&s
->partial
[last_size
], 0,
233 SHA512_BLOCK_SIZE
- last_size
);
235 if (last_size
> (SHA512_BLOCK_SIZE
- 16)) {
236 sha512_block(s
, s
->partial
);
237 memset(s
->partial
, 0, sizeof(s
->partial
));
240 /* Note: we assume total_size fits in 61 bits */
241 store64(s
->partial
+ SHA512_BLOCK_SIZE
- 8, s
->len
<< 3);
242 sha512_block(s
, s
->partial
);
244 /* Read out whole words */
246 store64(hash
, s
->h
[i
++]);
255 store64(tmp
, s
->h
[i
]);
256 memcpy(hash
, tmp
, len
);