1 /* $OpenBSD: sha1.h,v 1.24 2012/12/05 23:19:57 deraadt Exp $ */ 2 3 /* 4 * SHA-1 in C 5 * By Steve Reid <steve@edmweb.com> 6 * 100% Public Domain 7 */ 8 9 #ifndef _SHA1_H 10 #define _SHA1_H 11 12 #include <stddef.h> 13 #include <stdint.h> 14 15 #define SHA1_BLOCK_LENGTH 64 16 #define SHA1_DIGEST_LENGTH 20 17 #define SHA1_DIGEST_STRING_LENGTH (SHA1_DIGEST_LENGTH * 2 + 1) 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 typedef struct _SHA1_CTX { 24 uint32_t state[5]; 25 uint64_t count; 26 uint8_t buffer[SHA1_BLOCK_LENGTH]; 27 } SHA1_CTX; 28 29 void SHA1Init(SHA1_CTX *); 30 void SHA1Update(SHA1_CTX *, const uint8_t *, size_t); 31 void SHA1Final(uint8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *); 32 33 #define HTONDIGEST(x) do { \ 34 x[0] = htonl(x[0]); \ 35 x[1] = htonl(x[1]); \ 36 x[2] = htonl(x[2]); \ 37 x[3] = htonl(x[3]); \ 38 x[4] = htonl(x[4]); } while (0) 39 40 #define NTOHDIGEST(x) do { \ 41 x[0] = ntohl(x[0]); \ 42 x[1] = ntohl(x[1]); \ 43 x[2] = ntohl(x[2]); \ 44 x[3] = ntohl(x[3]); \ 45 x[4] = ntohl(x[4]); } while (0) 46 47 #ifdef __cplusplus 48 } 49 #endif 50 51 #endif /* _SHA1_H */ 52