1 /* 2 * This is the header file for the MD5 message-digest algorithm. 3 * The algorithm is due to Ron Rivest. This code was 4 * written by Colin Plumb in 1993, no copyright is claimed. 5 * This code is in the public domain; do with it what you wish. 6 * 7 * Equivalent code is available from RSA Data Security, Inc. 8 * This code has been tested against that, and is equivalent, 9 * except that you don't need to include two pages of legalese 10 * with every copy. 11 * 12 * To compute the message digest of a chunk of bytes, declare an 13 * MD5Context structure, pass it to MD5Init, call MD5Update as 14 * needed on buffers full of bytes, and then call MD5Final, which 15 * will fill a supplied 16-byte array with the digest. 16 * 17 * Changed so as no longer to depend on Colin Plumb's `usual.h' 18 * header definitions 19 * - Ian Jackson <ian (at) chiark.greenend.org.uk>. 20 * Still in the public domain. 21 */ 22 23 #ifndef MD5_H 24 #define MD5_H 25 26 #define md5byte unsigned char 27 #define UWORD32 unsigned int 28 29 typedef struct MD5Context MD5Context; 30 struct MD5Context 31 { 32 UWORD32 buf[4]; 33 UWORD32 bytes[2]; 34 UWORD32 in[16]; 35 }; 36 37 void MD5Init(struct MD5Context *context); 38 void MD5Update(struct MD5Context *context, md5byte const *buf, unsigned len); 39 void MD5Final(unsigned char digest[16], struct MD5Context *context); 40 void MD5Transform(UWORD32 buf[4], UWORD32 const in[16]); 41 42 #endif /* !MD5_H */ 43
