include/crypto/sha.h

   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
 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
 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