1 /* $OpenBSD: md5.h,v 1.17 2012/12/05 23:19:57 deraadt 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 #define MD5_BLOCK_LENGTH 64 19 #define MD5_DIGEST_LENGTH 16 20 #define MD5_DIGEST_STRING_LENGTH (MD5_DIGEST_LENGTH * 2 + 1) 21 22 typedef struct MD5Context { 23 u_int32_t state[4]; /* state */ 24 u_int64_t count; /* number of bits, mod 2^64 */ 25 u_int8_t buffer[MD5_BLOCK_LENGTH]; /* input buffer */ 26 } MD5_CTX; 27 28 __BEGIN_DECLS 29 void MD5Init(MD5_CTX *); 30 void MD5Update(MD5_CTX *, const u_int8_t *, size_t) 31 __attribute__((__bounded__(__string__,2,3))); 32 void MD5Pad(MD5_CTX *); 33 void MD5Final(u_int8_t [MD5_DIGEST_LENGTH], MD5_CTX *) 34 __attribute__((__bounded__(__minbytes__,1,MD5_DIGEST_LENGTH))); 35 void MD5Transform(u_int32_t [4], const u_int8_t [MD5_BLOCK_LENGTH]) 36 __attribute__((__bounded__(__minbytes__,1,4))) 37 __attribute__((__bounded__(__minbytes__,2,MD5_BLOCK_LENGTH))); 38 char *MD5End(MD5_CTX *, char *) 39 __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH))); 40 char *MD5File(const char *, char *) 41 __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH))); 42 char *MD5FileChunk(const char *, char *, off_t, off_t) 43 __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH))); 44 char *MD5Data(const u_int8_t *, size_t, char *) 45 __attribute__((__bounded__(__string__,1,2))) 46 __attribute__((__bounded__(__minbytes__,3,MD5_DIGEST_STRING_LENGTH))); 47 __END_DECLS 48 49 #endif /* _MD5_H_ */ 50