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