md5.h
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 /*	$OpenBSD: md5.h,v 1.15 2004/05/03 17:30:14 millert Exp $	*/
 
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 /*
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  * This code implements the MD5 message-digest algorithm.
  * The algorithm is due to Ron Rivest.  This code was
  * written by Colin Plumb in 1993, no copyright is claimed.
  * This code is in the public domain; do with it what you wish.
  *
  * Equivalent code is available from RSA Data Security, Inc.
  * This code has been tested against that, and is equivalent,
  * except that you don't need to include two pages of legalese
  * with every copy.
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  */
 
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 #ifndef _MD5_H_
 #define _MD5_H_
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 #define	MD5_BLOCK_LENGTH		64
 #define	MD5_DIGEST_LENGTH		16
 #define	MD5_DIGEST_STRING_LENGTH	(MD5_DIGEST_LENGTH * 2 + 1)
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 /* Probably not the proper place, but will do for Debian: */
 #include <sys/types.h>
 
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 /* fix types for Sun Solaris */
 #if defined(__SVR4) || defined(__sun)
     typedef uint8_t u_int8_t;
     typedef uint32_t u_int32_t;
     typedef uint64_t u_int64_t;
 #endif
 
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 typedef struct MD5Context {
 	u_int32_t state[4];			/* state */
 	u_int64_t count;			/* number of bits, mod 2^64 */
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 	unsigned char buffer[MD5_BLOCK_LENGTH];	/* input buffer */
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 } MD5_CTX;
 
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 void	 MD5Init(MD5_CTX *);
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 void	 U_MD5Update(MD5_CTX *, const unsigned char *, size_t);
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 void	 MD5Pad(MD5_CTX *);
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 void	 U_MD5Final(unsigned char [MD5_DIGEST_LENGTH], MD5_CTX *);
 void	 MD5Transform(u_int32_t [4], const unsigned char [MD5_BLOCK_LENGTH]);
 
 static inline void MD5Update(MD5_CTX *ctx, const char *str, size_t len) {
 	U_MD5Update(ctx, (const unsigned char *)str, len);
 }
 
 static inline void MD5Final(char buf[MD5_DIGEST_LENGTH], MD5_CTX *ctx) {
 	U_MD5Final((unsigned char *)buf, ctx);
 }
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 #endif /* _MD5_H_ */