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@chiark.greenend.org.uk>. 20 * Still in the public domain. 21 */ 22 23 #ifndef MD5_UTILS_H_ 24 #define MD5_UTILS_H_ 25 26 #ifdef __cplusplus 27 extern "C" { 28 #endif 29 30 #define md5byte unsigned char 31 #define UWORD32 unsigned int 32 33 typedef struct MD5Context MD5Context; 34 struct MD5Context { 35 UWORD32 buf[4]; 36 UWORD32 bytes[2]; 37 UWORD32 in[16]; 38 }; 39 40 void MD5Init(struct MD5Context *context); 41 void MD5Update(struct MD5Context *context, md5byte const *buf, unsigned len); 42 void MD5Final(unsigned char digest[16], struct MD5Context *context); 43 void MD5Transform(UWORD32 buf[4], UWORD32 const in[16]); 44 45 #ifdef __cplusplus 46 } // extern "C" 47 #endif 48 49 #endif // MD5_UTILS_H_ 50