diff options
Diffstat (limited to 'contrib/bind9/lib/isc/hmacmd5.c')
| -rw-r--r-- | contrib/bind9/lib/isc/hmacmd5.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/contrib/bind9/lib/isc/hmacmd5.c b/contrib/bind9/lib/isc/hmacmd5.c deleted file mode 100644 index f832146..0000000 --- a/contrib/bind9/lib/isc/hmacmd5.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Copyright (C) 2004-2006 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 2000, 2001 Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM - * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE - * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -/* $Id: hmacmd5.c,v 1.7.18.5 2006/02/26 22:30:56 marka Exp $ */ - -/*! \file - * This code implements the HMAC-MD5 keyed hash algorithm - * described in RFC2104. - */ - -#include "config.h" - -#include <isc/assertions.h> -#include <isc/hmacmd5.h> -#include <isc/md5.h> -#include <isc/string.h> -#include <isc/types.h> -#include <isc/util.h> - -#define PADLEN 64 -#define IPAD 0x36 -#define OPAD 0x5C - -/*! - * Start HMAC-MD5 process. Initialize an md5 context and digest the key. - */ -void -isc_hmacmd5_init(isc_hmacmd5_t *ctx, const unsigned char *key, - unsigned int len) -{ - unsigned char ipad[PADLEN]; - int i; - - memset(ctx->key, 0, sizeof(ctx->key)); - if (len > sizeof(ctx->key)) { - isc_md5_t md5ctx; - isc_md5_init(&md5ctx); - isc_md5_update(&md5ctx, key, len); - isc_md5_final(&md5ctx, ctx->key); - } else - memcpy(ctx->key, key, len); - - isc_md5_init(&ctx->md5ctx); - memset(ipad, IPAD, sizeof(ipad)); - for (i = 0; i < PADLEN; i++) - ipad[i] ^= ctx->key[i]; - isc_md5_update(&ctx->md5ctx, ipad, sizeof(ipad)); -} - -void -isc_hmacmd5_invalidate(isc_hmacmd5_t *ctx) { - isc_md5_invalidate(&ctx->md5ctx); - memset(ctx->key, 0, sizeof(ctx->key)); -} - -/*! - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -void -isc_hmacmd5_update(isc_hmacmd5_t *ctx, const unsigned char *buf, - unsigned int len) -{ - isc_md5_update(&ctx->md5ctx, buf, len); -} - -/*! - * Compute signature - finalize MD5 operation and reapply MD5. - */ -void -isc_hmacmd5_sign(isc_hmacmd5_t *ctx, unsigned char *digest) { - unsigned char opad[PADLEN]; - int i; - - isc_md5_final(&ctx->md5ctx, digest); - - memset(opad, OPAD, sizeof(opad)); - for (i = 0; i < PADLEN; i++) - opad[i] ^= ctx->key[i]; - - isc_md5_init(&ctx->md5ctx); - isc_md5_update(&ctx->md5ctx, opad, sizeof(opad)); - isc_md5_update(&ctx->md5ctx, digest, ISC_MD5_DIGESTLENGTH); - isc_md5_final(&ctx->md5ctx, digest); - isc_hmacmd5_invalidate(ctx); -} - -/*! - * Verify signature - finalize MD5 operation and reapply MD5, then - * compare to the supplied digest. - */ -isc_boolean_t -isc_hmacmd5_verify(isc_hmacmd5_t *ctx, unsigned char *digest) { - return (isc_hmacmd5_verify2(ctx, digest, ISC_MD5_DIGESTLENGTH)); -} - -isc_boolean_t -isc_hmacmd5_verify2(isc_hmacmd5_t *ctx, unsigned char *digest, size_t len) { - unsigned char newdigest[ISC_MD5_DIGESTLENGTH]; - - REQUIRE(len <= ISC_MD5_DIGESTLENGTH); - isc_hmacmd5_sign(ctx, newdigest); - return (ISC_TF(memcmp(digest, newdigest, len) == 0)); -} |
