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/* $OpenBSD: md4.h,v 1.15 2004/06/22 01:57:30 jfb Exp $ */
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/*
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* This code implements the MD4 message-digest algorithm.
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* The algorithm is due to Ron Rivest. This code was
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* written by Colin Plumb in 1993, no copyright is claimed.
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* This code is in the public domain; do with it what you wish.
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* Todd C. Miller modified the MD5 code to do MD4 based on RFC 1186.
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*
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* Equivalent code is available from RSA Data Security, Inc.
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* This code has been tested against that, and is equivalent,
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* except that you don't need to include two pages of legalese
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* with every copy.
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*/
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#ifndef _MD4_H_
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#define _MD4_H_
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#define MD4_BLOCK_LENGTH 64
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#define MD4_DIGEST_LENGTH 16
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#define MD4_DIGEST_STRING_LENGTH (MD4_DIGEST_LENGTH * 2 + 1)
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typedef struct MD4Context {
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u_int32_t state[4]; /* state */
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u_int64_t count; /* number of bits, mod 2^64 */
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u_int8_t buffer[MD4_BLOCK_LENGTH]; /* input buffer */
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} MD4_CTX;
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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void MD4Init(MD4_CTX *);
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void MD4Update(MD4_CTX *, const u_int8_t *, size_t)
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__attribute__((__bounded__(__string__,2,3)));
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void MD4Pad(MD4_CTX *);
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void MD4Final(u_int8_t [MD4_DIGEST_LENGTH], MD4_CTX *)
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__attribute__((__bounded__(__minbytes__,1,MD4_DIGEST_LENGTH)));
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void MD4Transform(u_int32_t [4], const u_int8_t [MD4_BLOCK_LENGTH])
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__attribute__((__bounded__(__minbytes__,1,4)))
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__attribute__((__bounded__(__minbytes__,2,MD4_BLOCK_LENGTH)));
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char *MD4End(MD4_CTX *, char *)
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__attribute__((__bounded__(__minbytes__,2,MD4_DIGEST_STRING_LENGTH)));
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char *MD4File(const char *, char *)
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__attribute__((__bounded__(__minbytes__,2,MD4_DIGEST_STRING_LENGTH)));
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char *MD4FileChunk(const char *, char *, off_t, off_t)
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__attribute__((__bounded__(__minbytes__,2,MD4_DIGEST_STRING_LENGTH)));
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char *MD4Data(const u_int8_t *, size_t, char *)
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__attribute__((__bounded__(__string__,1,2)))
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__attribute__((__bounded__(__minbytes__,3,MD4_DIGEST_STRING_LENGTH)));
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__END_DECLS
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#endif /* _MD4_H_ */
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