perf tools: Enable libtraceevent dynamic linking
[linux-2.6-microblaze.git] / include / crypto / blake2b.h
1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2
3 #ifndef _CRYPTO_BLAKE2B_H
4 #define _CRYPTO_BLAKE2B_H
5
6 #include <linux/bug.h>
7 #include <linux/types.h>
8 #include <linux/kernel.h>
9 #include <linux/string.h>
10
11 enum blake2b_lengths {
12         BLAKE2B_BLOCK_SIZE = 128,
13         BLAKE2B_HASH_SIZE = 64,
14         BLAKE2B_KEY_SIZE = 64,
15
16         BLAKE2B_160_HASH_SIZE = 20,
17         BLAKE2B_256_HASH_SIZE = 32,
18         BLAKE2B_384_HASH_SIZE = 48,
19         BLAKE2B_512_HASH_SIZE = 64,
20 };
21
22 struct blake2b_state {
23         /* 'h', 't', and 'f' are used in assembly code, so keep them as-is. */
24         u64 h[8];
25         u64 t[2];
26         u64 f[2];
27         u8 buf[BLAKE2B_BLOCK_SIZE];
28         unsigned int buflen;
29         unsigned int outlen;
30 };
31
32 enum blake2b_iv {
33         BLAKE2B_IV0 = 0x6A09E667F3BCC908ULL,
34         BLAKE2B_IV1 = 0xBB67AE8584CAA73BULL,
35         BLAKE2B_IV2 = 0x3C6EF372FE94F82BULL,
36         BLAKE2B_IV3 = 0xA54FF53A5F1D36F1ULL,
37         BLAKE2B_IV4 = 0x510E527FADE682D1ULL,
38         BLAKE2B_IV5 = 0x9B05688C2B3E6C1FULL,
39         BLAKE2B_IV6 = 0x1F83D9ABFB41BD6BULL,
40         BLAKE2B_IV7 = 0x5BE0CD19137E2179ULL,
41 };
42
43 static inline void __blake2b_init(struct blake2b_state *state, size_t outlen,
44                                   const void *key, size_t keylen)
45 {
46         state->h[0] = BLAKE2B_IV0 ^ (0x01010000 | keylen << 8 | outlen);
47         state->h[1] = BLAKE2B_IV1;
48         state->h[2] = BLAKE2B_IV2;
49         state->h[3] = BLAKE2B_IV3;
50         state->h[4] = BLAKE2B_IV4;
51         state->h[5] = BLAKE2B_IV5;
52         state->h[6] = BLAKE2B_IV6;
53         state->h[7] = BLAKE2B_IV7;
54         state->t[0] = 0;
55         state->t[1] = 0;
56         state->f[0] = 0;
57         state->f[1] = 0;
58         state->buflen = 0;
59         state->outlen = outlen;
60         if (keylen) {
61                 memcpy(state->buf, key, keylen);
62                 memset(&state->buf[keylen], 0, BLAKE2B_BLOCK_SIZE - keylen);
63                 state->buflen = BLAKE2B_BLOCK_SIZE;
64         }
65 }
66
67 #endif /* _CRYPTO_BLAKE2B_H */