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  * [I interpet this as a blanket permision -iwj.]
   7  *
   8  * Equivalent code is available from RSA Data Security, Inc.
   9  * This code has been tested against that, and is equivalent,
  10  * except that you don't need to include two pages of legalese
  11  * with every copy.
  12  *
  13  * To compute the message digest of a chunk of bytes, declare an
  14  * MD5Context structure, pass it to MD5Init, call MD5Update as
  15  * needed on buffers full of bytes, and then call MD5Final, which
  16  * will fill a supplied 16-byte array with the digest.
  17  *
  18  * Changed so as no longer to depend on Colin Plumb's `usual.h'
  19  * header definitions; now uses stuff from dpkg's config.h
  20  *  - Ian Jackson <ijackson@nyx.cs.du.edu>.
  21  * Still in the public domain.
  22  */
  23
  24 #ifndef MD5_H
  25 #define MD5_H
  26
  27 #define md5byte unsigned char
  28
  29 struct MD5Context {
  30         uint32_t buf[4];
  31         uint32_t bytes[2];
  32         uint32_t in[16];
  33 };
  34
  35 static void MD5Init(struct MD5Context *context);
  36 static void MD5Update(struct MD5Context *context,
  37                       md5byte const *buf, unsigned len);
  38 static void MD5Final(unsigned char digest[16], struct MD5Context *context);
  39 static void MD5Transform(uint32_t buf[4], uint32_t const in[16]);
  40
  41 #endif /* !MD5_H */