1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Common values for SHA algorithms
4 */
5
6 #ifndef _CRYPTO_SHA_H
7 #define _CRYPTO_SHA_H
8
9 #include <linux/types.h>
10
11 #define SHA1_DIGEST_SIZE 20
12 #define SHA1_BLOCK_SIZE 64
13
14 #define SHA224_DIGEST_SIZE 28
15 #define SHA224_BLOCK_SIZE 64
16
17 #define SHA256_DIGEST_SIZE 32
18 #define SHA256_BLOCK_SIZE 64
19
20 #define SHA384_DIGEST_SIZE 48
21 #define SHA384_BLOCK_SIZE 128
22
23 #define SHA512_DIGEST_SIZE 64
24 #define SHA512_BLOCK_SIZE 128
25
26 #define SHA1_H0 0x67452301UL
27 #define SHA1_H1 0xefcdab89UL
28 #define SHA1_H2 0x98badcfeUL
29 #define SHA1_H3 0x10325476UL
30 #define SHA1_H4 0xc3d2e1f0UL
31
32 #define SHA224_H0 0xc1059ed8UL
33 #define SHA224_H1 0x367cd507UL
34 #define SHA224_H2 0x3070dd17UL
35 #define SHA224_H3 0xf70e5939UL
36 #define SHA224_H4 0xffc00b31UL
37 #define SHA224_H5 0x68581511UL
38 #define SHA224_H6 0x64f98fa7UL
39 #define SHA224_H7 0xbefa4fa4UL
40
41 #define SHA256_H0 0x6a09e667UL
42 #define SHA256_H1 0xbb67ae85UL
43 #define SHA256_H2 0x3c6ef372UL
44 #define SHA256_H3 0xa54ff53aUL
45 #define SHA256_H4 0x510e527fUL
46 #define SHA256_H5 0x9b05688cUL
47 #define SHA256_H6 0x1f83d9abUL
48 #define SHA256_H7 0x5be0cd19UL
49
50 #define SHA384_H0 0xcbbb9d5dc1059ed8ULL
51 #define SHA384_H1 0x629a292a367cd507ULL
52 #define SHA384_H2 0x9159015a3070dd17ULL
53 #define SHA384_H3 0x152fecd8f70e5939ULL
54 #define SHA384_H4 0x67332667ffc00b31ULL
55 #define SHA384_H5 0x8eb44a8768581511ULL
56 #define SHA384_H6 0xdb0c2e0d64f98fa7ULL
57 #define SHA384_H7 0x47b5481dbefa4fa4ULL
58
59 #define SHA512_H0 0x6a09e667f3bcc908ULL
60 #define SHA512_H1 0xbb67ae8584caa73bULL
61 #define SHA512_H2 0x3c6ef372fe94f82bULL
62 #define SHA512_H3 0xa54ff53a5f1d36f1ULL
63 #define SHA512_H4 0x510e527fade682d1ULL
64 #define SHA512_H5 0x9b05688c2b3e6c1fULL
65 #define SHA512_H6 0x1f83d9abfb41bd6bULL
66 #define SHA512_H7 0x5be0cd19137e2179ULL
67
68 extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE];
69
70 extern const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE];
71
72 extern const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE];
73
74 extern const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE];
75
76 extern const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE];
77
78 struct sha1_state {
79 u32 state[SHA1_DIGEST_SIZE / 4];
80 u64 count;
81 u8 buffer[SHA1_BLOCK_SIZE];
82 };
83
84 struct sha256_state {
85 u32 state[SHA256_DIGEST_SIZE / 4];
86 u64 count;
87 u8 buf[SHA256_BLOCK_SIZE];
88 };
89
90 struct sha512_state {
91 u64 state[SHA512_DIGEST_SIZE / 8];
92 u64 count[2];
93 u8 buf[SHA512_BLOCK_SIZE];
94 };
95
96 struct shash_desc;
97
98 extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
99 unsigned int len);
100
101 extern int crypto_sha1_finup(struct shash_desc *desc, const u8 *data,
102 unsigned int len, u8 *hash);
103
104 extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
105 unsigned int len);
106
107 extern int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,
108 unsigned int len, u8 *hash);
109
110 extern int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
111 unsigned int len);
112
113 extern int crypto_sha512_finup(struct shash_desc *desc, const u8 *data,
114 unsigned int len, u8 *hash);
115
116 /*
117 * Stand-alone implementation of the SHA256 algorithm. It is designed to
118 * have as little dependencies as possible so it can be used in the
119 * kexec_file purgatory. In other cases you should generally use the
120 * hash APIs from include/crypto/hash.h. Especially when hashing large
121 * amounts of data as those APIs may be hw-accelerated.
122 *
123 * For details see lib/crypto/sha256.c
124 */
125
sha256_init(struct sha256_state * sctx)126 static inline int sha256_init(struct sha256_state *sctx)
127 {
128 sctx->state[0] = SHA256_H0;
129 sctx->state[1] = SHA256_H1;
130 sctx->state[2] = SHA256_H2;
131 sctx->state[3] = SHA256_H3;
132 sctx->state[4] = SHA256_H4;
133 sctx->state[5] = SHA256_H5;
134 sctx->state[6] = SHA256_H6;
135 sctx->state[7] = SHA256_H7;
136 sctx->count = 0;
137
138 return 0;
139 }
140 extern int sha256_update(struct sha256_state *sctx, const u8 *input,
141 unsigned int length);
142 extern int sha256_final(struct sha256_state *sctx, u8 *hash);
143
sha224_init(struct sha256_state * sctx)144 static inline int sha224_init(struct sha256_state *sctx)
145 {
146 sctx->state[0] = SHA224_H0;
147 sctx->state[1] = SHA224_H1;
148 sctx->state[2] = SHA224_H2;
149 sctx->state[3] = SHA224_H3;
150 sctx->state[4] = SHA224_H4;
151 sctx->state[5] = SHA224_H5;
152 sctx->state[6] = SHA224_H6;
153 sctx->state[7] = SHA224_H7;
154 sctx->count = 0;
155
156 return 0;
157 }
158 extern int sha224_update(struct sha256_state *sctx, const u8 *input,
159 unsigned int length);
160 extern int sha224_final(struct sha256_state *sctx, u8 *hash);
161
162 #endif
163
