1 /* $OpenBSD: md5.h,v 1.15 2004/05/03 17:30:14 millert Exp $ */ 2 3 /* 4 * This code implements the MD5 message-digest algorithm. 5 * The algorithm is due to Ron Rivest. This code was 6 * written by Colin Plumb in 1993, no copyright is claimed. 7 * This code is in the public domain; do with it what you wish. 8 * 9 * Equivalent code is available from RSA Data Security, Inc. 10 * This code has been tested against that, and is equivalent, 11 * except that you don't need to include two pages of legalese 12 * with every copy. 13 */ 14 15 #ifndef _MD5_H_ 16 #define _MD5_H_ 17 18 #include <stdint.h> 19 20 #define MD5_BLOCK_LENGTH 64 21 #define MD5_DIGEST_LENGTH 16 22 #define MD5_DIGEST_STRING_LENGTH (MD5_DIGEST_LENGTH * 2 + 1) 23 24 typedef struct MD5Context { 25 uint32_t state[4]; /* state */ 26 uint64_t count; /* number of bits, mod 2^64 */ 27 uint8_t buffer[MD5_BLOCK_LENGTH]; /* input buffer */ 28 } MD5_CTX; 29 30 void MD5Init(MD5_CTX *); 31 void MD5Update(MD5_CTX *, const uint8_t *, size_t); 32 void MD5Pad(MD5_CTX *); 33 void MD5Final(uint8_t [MD5_DIGEST_LENGTH], MD5_CTX *); 34 void MD5Transform(uint32_t [4], const uint8_t [MD5_BLOCK_LENGTH]); 35 36 #endif /* _MD5_H_ */ 37