1 /* 2 * BIRD Library -- SHA-256 and SHA-224 Hash Functions 3 * 4 * (c) 2015 CZ.NIC z.s.p.o. 5 * 6 * Based on the code from libgcrypt-1.6.0, which is 7 * (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc. 8 * 9 * Can be freely distributed and used under the terms of the GNU GPL. 10 */ 11 12 #ifndef _BIRD_SHA256_H_ 13 #define _BIRD_SHA256_H_ 14 15 #include "nest/bird.h" 16 17 18 #define SHA224_SIZE 28 19 #define SHA224_HEX_SIZE 57 20 #define SHA224_BLOCK_SIZE 64 21 22 #define SHA256_SIZE 32 23 #define SHA256_HEX_SIZE 65 24 #define SHA256_BLOCK_SIZE 64 25 26 27 struct hash_context; 28 29 struct sha256_context { 30 u32 h0, h1, h2, h3, h4, h5, h6, h7; 31 byte buf[SHA256_BLOCK_SIZE]; 32 uint nblocks; 33 uint count; 34 }; 35 36 #define sha224_context sha256_context 37 38 39 void sha256_init(struct hash_context *ctx); 40 void sha224_init(struct hash_context *ctx); 41 42 void sha256_update(struct hash_context *ctx, const byte *buf, uint len); 43 #define sha224_update sha256_update 44 45 byte *sha256_final(struct hash_context *ctx); 46 #define sha224_final sha256_final 47 48 49 #endif /* _BIRD_SHA256_H_ */ 50