1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Common values for SHA-2 algorithms 4 */ 5 6 #ifndef _CRYPTO_SHA2_H 7 #define _CRYPTO_SHA2_H 8 9 #include <linux/types.h> 10 11 #define SHA224_DIGEST_SIZE 28 12 #define SHA224_BLOCK_SIZE 64 13 14 #define SHA256_DIGEST_SIZE 32 15 #define SHA256_BLOCK_SIZE 64 16 #define SHA256_STATE_WORDS 8 17 18 #define SHA384_DIGEST_SIZE 48 19 #define SHA384_BLOCK_SIZE 128 20 21 #define SHA512_DIGEST_SIZE 64 22 #define SHA512_BLOCK_SIZE 128 23 #define SHA512_STATE_SIZE 80 24 25 #define SHA224_H0 0xc1059ed8UL 26 #define SHA224_H1 0x367cd507UL 27 #define SHA224_H2 0x3070dd17UL 28 #define SHA224_H3 0xf70e5939UL 29 #define SHA224_H4 0xffc00b31UL 30 #define SHA224_H5 0x68581511UL 31 #define SHA224_H6 0x64f98fa7UL 32 #define SHA224_H7 0xbefa4fa4UL 33 34 #define SHA256_H0 0x6a09e667UL 35 #define SHA256_H1 0xbb67ae85UL 36 #define SHA256_H2 0x3c6ef372UL 37 #define SHA256_H3 0xa54ff53aUL 38 #define SHA256_H4 0x510e527fUL 39 #define SHA256_H5 0x9b05688cUL 40 #define SHA256_H6 0x1f83d9abUL 41 #define SHA256_H7 0x5be0cd19UL 42 43 #define SHA384_H0 0xcbbb9d5dc1059ed8ULL 44 #define SHA384_H1 0x629a292a367cd507ULL 45 #define SHA384_H2 0x9159015a3070dd17ULL 46 #define SHA384_H3 0x152fecd8f70e5939ULL 47 #define SHA384_H4 0x67332667ffc00b31ULL 48 #define SHA384_H5 0x8eb44a8768581511ULL 49 #define SHA384_H6 0xdb0c2e0d64f98fa7ULL 50 #define SHA384_H7 0x47b5481dbefa4fa4ULL 51 52 #define SHA512_H0 0x6a09e667f3bcc908ULL 53 #define SHA512_H1 0xbb67ae8584caa73bULL 54 #define SHA512_H2 0x3c6ef372fe94f82bULL 55 #define SHA512_H3 0xa54ff53a5f1d36f1ULL 56 #define SHA512_H4 0x510e527fade682d1ULL 57 #define SHA512_H5 0x9b05688c2b3e6c1fULL 58 #define SHA512_H6 0x1f83d9abfb41bd6bULL 59 #define SHA512_H7 0x5be0cd19137e2179ULL 60 61 extern const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE]; 62 63 extern const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE]; 64 65 extern const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE]; 66 67 extern const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE]; 68 69 struct crypto_sha256_state { 70 u32 state[SHA256_STATE_WORDS]; 71 u64 count; 72 }; 73 74 struct sha256_state { 75 union { 76 struct crypto_sha256_state ctx; 77 struct { 78 u32 state[SHA256_STATE_WORDS]; 79 u64 count; 80 }; 81 }; 82 u8 buf[SHA256_BLOCK_SIZE]; 83 }; 84 85 struct sha512_state { 86 u64 state[SHA512_DIGEST_SIZE / 8]; 87 u64 count[2]; 88 u8 buf[SHA512_BLOCK_SIZE]; 89 }; 90 91 static inline void sha256_block_init(struct crypto_sha256_state *sctx) 92 { 93 sctx->state[0] = SHA256_H0; 94 sctx->state[1] = SHA256_H1; 95 sctx->state[2] = SHA256_H2; 96 sctx->state[3] = SHA256_H3; 97 sctx->state[4] = SHA256_H4; 98 sctx->state[5] = SHA256_H5; 99 sctx->state[6] = SHA256_H6; 100 sctx->state[7] = SHA256_H7; 101 sctx->count = 0; 102 } 103 104 static inline void sha256_init(struct sha256_state *sctx) 105 { 106 sha256_block_init(&sctx->ctx); 107 } 108 void sha256_update(struct sha256_state *sctx, const u8 *data, size_t len); 109 void sha256_final(struct sha256_state *sctx, u8 out[SHA256_DIGEST_SIZE]); 110 void sha256(const u8 *data, size_t len, u8 out[SHA256_DIGEST_SIZE]); 111 112 static inline void sha224_block_init(struct crypto_sha256_state *sctx) 113 { 114 sctx->state[0] = SHA224_H0; 115 sctx->state[1] = SHA224_H1; 116 sctx->state[2] = SHA224_H2; 117 sctx->state[3] = SHA224_H3; 118 sctx->state[4] = SHA224_H4; 119 sctx->state[5] = SHA224_H5; 120 sctx->state[6] = SHA224_H6; 121 sctx->state[7] = SHA224_H7; 122 sctx->count = 0; 123 } 124 125 static inline void sha224_init(struct sha256_state *sctx) 126 { 127 sha224_block_init(&sctx->ctx); 128 } 129 /* Simply use sha256_update as it is equivalent to sha224_update. */ 130 void sha224_final(struct sha256_state *sctx, u8 out[SHA224_DIGEST_SIZE]); 131 132 #endif /* _CRYPTO_SHA2_H */ 133