hmacmd5.c File Reference

#include "config.h"
#include <isc/assertions.h>
#include <isc/hmacmd5.h>
#include <isc/md5.h>
#include <isc/platform.h>
#include <isc/safe.h>
#include <isc/string.h>
#include <isc/types.h>
#include <isc/util.h>

Go to the source code of this file.

Defines
#define	PADLEN   64
#define	IPAD   0x36
#define	OPAD   0x5C
Functions
void	isc_hmacmd5_init (isc_hmacmd5_t *ctx, const unsigned char *key, unsigned int len)
void	isc_hmacmd5_invalidate (isc_hmacmd5_t *ctx)
void	isc_hmacmd5_update (isc_hmacmd5_t *ctx, const unsigned char *buf, unsigned int len)
void	isc_hmacmd5_sign (isc_hmacmd5_t *ctx, unsigned char *digest)
isc_boolean_t	isc_hmacmd5_verify (isc_hmacmd5_t *ctx, unsigned char *digest)
isc_boolean_t	isc_hmacmd5_verify2 (isc_hmacmd5_t *ctx, unsigned char *digest, size_t len)

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Detailed Description

This code implements the HMAC-MD5 keyed hash algorithm described in RFC2104.

Definition in file hmacmd5.c.

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Define Documentation

#define PADLEN   64

Definition at line 244 of file hmacmd5.c.

#define IPAD   0x36

Definition at line 245 of file hmacmd5.c.

Referenced by isc_hmacmd5_init(), isc_hmacsha1_init(), isc_hmacsha224_init(), isc_hmacsha256_init(), isc_hmacsha384_init(), and isc_hmacsha512_init().

#define OPAD   0x5C

Definition at line 246 of file hmacmd5.c.

Referenced by isc_hmacmd5_sign(), isc_hmacsha1_sign(), isc_hmacsha224_sign(), isc_hmacsha256_sign(), isc_hmacsha384_sign(), and isc_hmacsha512_sign().

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Function Documentation

void isc_hmacmd5_init	(	isc_hmacmd5_t *	ctx,
		const unsigned char *	key,
		unsigned int	len
	)

Start HMAC-MD5 process. Initialize an md5 context and digest the key.

Definition at line 252 of file hmacmd5.c.

References IPAD, isc_md5_final(), isc_md5_init(), isc_md5_update(), isc_hmacmd5_t::key, and isc_hmacmd5_t::md5ctx.

Referenced by ATF_TC_BODY(), hmacmd5_createctx(), sign(), and verify().

void isc_hmacmd5_invalidate

(

isc_hmacmd5_t *

ctx

)

Definition at line 275 of file hmacmd5.c.

References isc_md5_invalidate(), isc_hmacmd5_t::key, and isc_hmacmd5_t::md5ctx.

Referenced by hmacmd5_destroyctx(), and isc_hmacmd5_sign().

void isc_hmacmd5_update	(	isc_hmacmd5_t *	ctx,
		const unsigned char *	buf,
		unsigned int	len
	)

Update context to reflect the concatenation of another buffer full of bytes.

Definition at line 285 of file hmacmd5.c.

References isc_md5_update(), and isc_hmacmd5_t::md5ctx.

Referenced by ATF_TC_BODY(), hmacmd5_adddata(), sign(), and verify().

void isc_hmacmd5_sign	(	isc_hmacmd5_t *	ctx,
		unsigned char *	digest
	)

Compute signature - finalize MD5 operation and reapply MD5.

Definition at line 295 of file hmacmd5.c.

References isc_hmacmd5_invalidate(), ISC_MD5_DIGESTLENGTH, isc_md5_final(), isc_md5_init(), isc_md5_update(), isc_hmacmd5_t::key, isc_hmacmd5_t::md5ctx, and OPAD.

Referenced by ATF_TC_BODY(), hmacmd5_sign(), isc_hmacmd5_verify2(), sign(), and verify().

isc_boolean_t isc_hmacmd5_verify	(	isc_hmacmd5_t *	ctx,
		unsigned char *	digest
	)

Verify signature - finalize MD5 operation and reapply MD5, then compare to the supplied digest.

Definition at line 319 of file hmacmd5.c.

References isc_hmacmd5_verify2(), and ISC_MD5_DIGESTLENGTH.

isc_boolean_t isc_hmacmd5_verify2	(	isc_hmacmd5_t *	ctx,
		unsigned char *	digest,
		size_t	len
	)

Definition at line 324 of file hmacmd5.c.

References isc_hmacmd5_sign(), ISC_MD5_DIGESTLENGTH, isc_safe_memcmp(), and REQUIRE.

Referenced by hmacmd5_verify(), and isc_hmacmd5_verify().

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