/*
 * IRC - Internet Relay Chat, include/ircd_md5.h
 *
 * 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.
 *
 * ircuified 2002 by hikari
 */
/** @file
 * @brief MD5 implementation for ircu.
 * @version $Id: ircd_md5.h 1234 2004-10-05 22:51:47Z entrope $
 */
#ifndef ircd_md5_h
#define ircd_md5_h

/** Typedef for an unsigned 32-bit integer. */
typedef unsigned int uint32;

/** MD5 context structure. */
struct MD5Context {
	uint32 buf[4];        /**< Current digest state/value. */
	uint32 bits[2];       /**< Number of bits hashed so far. */
	unsigned char in[64]; /**< Residual input buffer. */
};

void MD5Init(struct MD5Context *);
void MD5Update(struct MD5Context *, unsigned const char *, unsigned);
void MD5Final(unsigned char digest[16], struct MD5Context *);
void MD5Transform(uint32 buf[4], uint32 const in[16]);
void DoMD5(unsigned char *mdout, unsigned char *src, unsigned long n);

char *crypt_md5(const char *pw, const char *salt);

/** Helper typedef for the MD5 context structure. */
typedef struct MD5Context MD5_CTX;

#endif /* ircd_md5_h */
