mdw@git.distorted.org.uk Git - secnet/blob - md5.h

   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; now uses stuff from dpkg's config.h
  19  *  - Ian Jackson <ijackson@nyx.cs.du.edu>.
  20  * Still in the public domain.
  21  */
  22
  23 #ifndef MD5_H
  24 #define MD5_H
  25
  26 #define md5byte unsigned char
  27
  28 struct MD5Context {
  29         uint32_t buf[4];
  30         uint32_t bytes[2];
  31         uint32_t in[16];
  32 };
  33
  34 static void MD5Init(struct MD5Context *context);
  35 static void MD5Update(struct MD5Context *context,
  36                       md5byte const *buf, unsigned len);
  37 static void MD5Final(unsigned char digest[16], struct MD5Context *context);
  38 static void MD5Transform(uint32_t buf[4], uint32_t const in[16]);
  39
  40 #endif /* !MD5_H */