diff options
Diffstat (limited to 'contrib/bind9/lib/isc/hmacsha.c')
| -rw-r--r-- | contrib/bind9/lib/isc/hmacsha.c | 438 |
1 files changed, 0 insertions, 438 deletions
diff --git a/contrib/bind9/lib/isc/hmacsha.c b/contrib/bind9/lib/isc/hmacsha.c deleted file mode 100644 index 7ee13f7..0000000 --- a/contrib/bind9/lib/isc/hmacsha.c +++ /dev/null @@ -1,438 +0,0 @@ -/* - * Copyright (C) 2005-2007 Internet Systems Consortium, Inc. ("ISC") - * - * Permission to use, copy, modify, and/or 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: hmacsha.c,v 1.2.2.7 2007/08/28 07:20:06 tbox Exp $ */ - -/* - * This code implements the HMAC-SHA1, HMAC-SHA224, HMAC-SHA256, HMAC-SHA384 - * and HMAC-SHA512 keyed hash algorithm described in RFC 2104 and - * draft-ietf-dnsext-tsig-sha-01.txt. - */ - -#include "config.h" - -#include <isc/assertions.h> -#include <isc/hmacsha.h> -#include <isc/sha1.h> -#include <isc/sha2.h> -#include <isc/string.h> -#include <isc/types.h> -#include <isc/util.h> - -#define IPAD 0x36 -#define OPAD 0x5C - -/* - * Start HMAC-SHA1 process. Initialize an sha1 context and digest the key. - */ -void -isc_hmacsha1_init(isc_hmacsha1_t *ctx, const unsigned char *key, - unsigned int len) -{ - unsigned char ipad[ISC_SHA1_BLOCK_LENGTH]; - unsigned int i; - - memset(ctx->key, 0, sizeof(ctx->key)); - if (len > sizeof(ctx->key)) { - isc_sha1_t sha1ctx; - isc_sha1_init(&sha1ctx); - isc_sha1_update(&sha1ctx, key, len); - isc_sha1_final(&sha1ctx, ctx->key); - } else - memcpy(ctx->key, key, len); - - isc_sha1_init(&ctx->sha1ctx); - memset(ipad, IPAD, sizeof(ipad)); - for (i = 0; i < ISC_SHA1_BLOCK_LENGTH; i++) - ipad[i] ^= ctx->key[i]; - isc_sha1_update(&ctx->sha1ctx, ipad, sizeof(ipad)); -} - -void -isc_hmacsha1_invalidate(isc_hmacsha1_t *ctx) { - isc_sha1_invalidate(&ctx->sha1ctx); - memset(ctx->key, 0, sizeof(ctx->key)); - memset(ctx, 0, sizeof(ctx)); -} - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -void -isc_hmacsha1_update(isc_hmacsha1_t *ctx, const unsigned char *buf, - unsigned int len) -{ - isc_sha1_update(&ctx->sha1ctx, buf, len); -} - -/* - * Compute signature - finalize SHA1 operation and reapply SHA1. - */ -void -isc_hmacsha1_sign(isc_hmacsha1_t *ctx, unsigned char *digest, size_t len) { - unsigned char opad[ISC_SHA1_BLOCK_LENGTH]; - unsigned char newdigest[ISC_SHA1_DIGESTLENGTH]; - unsigned int i; - - REQUIRE(len <= ISC_SHA1_DIGESTLENGTH); - isc_sha1_final(&ctx->sha1ctx, newdigest); - - memset(opad, OPAD, sizeof(opad)); - for (i = 0; i < ISC_SHA1_BLOCK_LENGTH; i++) - opad[i] ^= ctx->key[i]; - - isc_sha1_init(&ctx->sha1ctx); - isc_sha1_update(&ctx->sha1ctx, opad, sizeof(opad)); - isc_sha1_update(&ctx->sha1ctx, newdigest, ISC_SHA1_DIGESTLENGTH); - isc_sha1_final(&ctx->sha1ctx, newdigest); - isc_hmacsha1_invalidate(ctx); - memcpy(digest, newdigest, len); - memset(newdigest, 0, sizeof(newdigest)); -} - -/* - * Verify signature - finalize SHA1 operation and reapply SHA1, then - * compare to the supplied digest. - */ -isc_boolean_t -isc_hmacsha1_verify(isc_hmacsha1_t *ctx, unsigned char *digest, size_t len) { - unsigned char newdigest[ISC_SHA1_DIGESTLENGTH]; - - REQUIRE(len <= ISC_SHA1_DIGESTLENGTH); - isc_hmacsha1_sign(ctx, newdigest, ISC_SHA1_DIGESTLENGTH); - return (ISC_TF(memcmp(digest, newdigest, len) == 0)); -} - -/* - * Start HMAC-SHA224 process. Initialize an sha224 context and digest the key. - */ -void -isc_hmacsha224_init(isc_hmacsha224_t *ctx, const unsigned char *key, - unsigned int len) -{ - unsigned char ipad[ISC_SHA224_BLOCK_LENGTH]; - unsigned int i; - - memset(ctx->key, 0, sizeof(ctx->key)); - if (len > sizeof(ctx->key)) { - isc_sha224_t sha224ctx; - isc_sha224_init(&sha224ctx); - isc_sha224_update(&sha224ctx, key, len); - isc_sha224_final(ctx->key, &sha224ctx); - } else - memcpy(ctx->key, key, len); - - isc_sha224_init(&ctx->sha224ctx); - memset(ipad, IPAD, sizeof(ipad)); - for (i = 0; i < ISC_SHA224_BLOCK_LENGTH; i++) - ipad[i] ^= ctx->key[i]; - isc_sha224_update(&ctx->sha224ctx, ipad, sizeof(ipad)); -} - -void -isc_hmacsha224_invalidate(isc_hmacsha224_t *ctx) { - memset(ctx->key, 0, sizeof(ctx->key)); - memset(ctx, 0, sizeof(ctx)); -} - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -void -isc_hmacsha224_update(isc_hmacsha224_t *ctx, const unsigned char *buf, - unsigned int len) -{ - isc_sha224_update(&ctx->sha224ctx, buf, len); -} - -/* - * Compute signature - finalize SHA224 operation and reapply SHA224. - */ -void -isc_hmacsha224_sign(isc_hmacsha224_t *ctx, unsigned char *digest, size_t len) { - unsigned char opad[ISC_SHA224_BLOCK_LENGTH]; - unsigned char newdigest[ISC_SHA224_DIGESTLENGTH]; - unsigned int i; - - REQUIRE(len <= ISC_SHA224_DIGESTLENGTH); - isc_sha224_final(newdigest, &ctx->sha224ctx); - - memset(opad, OPAD, sizeof(opad)); - for (i = 0; i < ISC_SHA224_BLOCK_LENGTH; i++) - opad[i] ^= ctx->key[i]; - - isc_sha224_init(&ctx->sha224ctx); - isc_sha224_update(&ctx->sha224ctx, opad, sizeof(opad)); - isc_sha224_update(&ctx->sha224ctx, newdigest, ISC_SHA224_DIGESTLENGTH); - isc_sha224_final(newdigest, &ctx->sha224ctx); - memcpy(digest, newdigest, len); - memset(newdigest, 0, sizeof(newdigest)); -} - -/* - * Verify signature - finalize SHA224 operation and reapply SHA224, then - * compare to the supplied digest. - */ -isc_boolean_t -isc_hmacsha224_verify(isc_hmacsha224_t *ctx, unsigned char *digest, size_t len) { - unsigned char newdigest[ISC_SHA224_DIGESTLENGTH]; - - REQUIRE(len <= ISC_SHA224_DIGESTLENGTH); - isc_hmacsha224_sign(ctx, newdigest, ISC_SHA224_DIGESTLENGTH); - return (ISC_TF(memcmp(digest, newdigest, len) == 0)); -} - -/* - * Start HMAC-SHA256 process. Initialize an sha256 context and digest the key. - */ -void -isc_hmacsha256_init(isc_hmacsha256_t *ctx, const unsigned char *key, - unsigned int len) -{ - unsigned char ipad[ISC_SHA256_BLOCK_LENGTH]; - unsigned int i; - - memset(ctx->key, 0, sizeof(ctx->key)); - if (len > sizeof(ctx->key)) { - isc_sha256_t sha256ctx; - isc_sha256_init(&sha256ctx); - isc_sha256_update(&sha256ctx, key, len); - isc_sha256_final(ctx->key, &sha256ctx); - } else - memcpy(ctx->key, key, len); - - isc_sha256_init(&ctx->sha256ctx); - memset(ipad, IPAD, sizeof(ipad)); - for (i = 0; i < ISC_SHA256_BLOCK_LENGTH; i++) - ipad[i] ^= ctx->key[i]; - isc_sha256_update(&ctx->sha256ctx, ipad, sizeof(ipad)); -} - -void -isc_hmacsha256_invalidate(isc_hmacsha256_t *ctx) { - memset(ctx->key, 0, sizeof(ctx->key)); - memset(ctx, 0, sizeof(ctx)); -} - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -void -isc_hmacsha256_update(isc_hmacsha256_t *ctx, const unsigned char *buf, - unsigned int len) -{ - isc_sha256_update(&ctx->sha256ctx, buf, len); -} - -/* - * Compute signature - finalize SHA256 operation and reapply SHA256. - */ -void -isc_hmacsha256_sign(isc_hmacsha256_t *ctx, unsigned char *digest, size_t len) { - unsigned char opad[ISC_SHA256_BLOCK_LENGTH]; - unsigned char newdigest[ISC_SHA256_DIGESTLENGTH]; - unsigned int i; - - REQUIRE(len <= ISC_SHA256_DIGESTLENGTH); - isc_sha256_final(newdigest, &ctx->sha256ctx); - - memset(opad, OPAD, sizeof(opad)); - for (i = 0; i < ISC_SHA256_BLOCK_LENGTH; i++) - opad[i] ^= ctx->key[i]; - - isc_sha256_init(&ctx->sha256ctx); - isc_sha256_update(&ctx->sha256ctx, opad, sizeof(opad)); - isc_sha256_update(&ctx->sha256ctx, newdigest, ISC_SHA256_DIGESTLENGTH); - isc_sha256_final(newdigest, &ctx->sha256ctx); - memcpy(digest, newdigest, len); - memset(newdigest, 0, sizeof(newdigest)); -} - -/* - * Verify signature - finalize SHA256 operation and reapply SHA256, then - * compare to the supplied digest. - */ -isc_boolean_t -isc_hmacsha256_verify(isc_hmacsha256_t *ctx, unsigned char *digest, size_t len) { - unsigned char newdigest[ISC_SHA256_DIGESTLENGTH]; - - REQUIRE(len <= ISC_SHA256_DIGESTLENGTH); - isc_hmacsha256_sign(ctx, newdigest, ISC_SHA256_DIGESTLENGTH); - return (ISC_TF(memcmp(digest, newdigest, len) == 0)); -} - -/* - * Start HMAC-SHA384 process. Initialize an sha384 context and digest the key. - */ -void -isc_hmacsha384_init(isc_hmacsha384_t *ctx, const unsigned char *key, - unsigned int len) -{ - unsigned char ipad[ISC_SHA384_BLOCK_LENGTH]; - unsigned int i; - - memset(ctx->key, 0, sizeof(ctx->key)); - if (len > sizeof(ctx->key)) { - isc_sha384_t sha384ctx; - isc_sha384_init(&sha384ctx); - isc_sha384_update(&sha384ctx, key, len); - isc_sha384_final(ctx->key, &sha384ctx); - } else - memcpy(ctx->key, key, len); - - isc_sha384_init(&ctx->sha384ctx); - memset(ipad, IPAD, sizeof(ipad)); - for (i = 0; i < ISC_SHA384_BLOCK_LENGTH; i++) - ipad[i] ^= ctx->key[i]; - isc_sha384_update(&ctx->sha384ctx, ipad, sizeof(ipad)); -} - -void -isc_hmacsha384_invalidate(isc_hmacsha384_t *ctx) { - memset(ctx->key, 0, sizeof(ctx->key)); - memset(ctx, 0, sizeof(ctx)); -} - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -void -isc_hmacsha384_update(isc_hmacsha384_t *ctx, const unsigned char *buf, - unsigned int len) -{ - isc_sha384_update(&ctx->sha384ctx, buf, len); -} - -/* - * Compute signature - finalize SHA384 operation and reapply SHA384. - */ -void -isc_hmacsha384_sign(isc_hmacsha384_t *ctx, unsigned char *digest, size_t len) { - unsigned char opad[ISC_SHA384_BLOCK_LENGTH]; - unsigned char newdigest[ISC_SHA384_DIGESTLENGTH]; - unsigned int i; - - REQUIRE(len <= ISC_SHA384_DIGESTLENGTH); - isc_sha384_final(newdigest, &ctx->sha384ctx); - - memset(opad, OPAD, sizeof(opad)); - for (i = 0; i < ISC_SHA384_BLOCK_LENGTH; i++) - opad[i] ^= ctx->key[i]; - - isc_sha384_init(&ctx->sha384ctx); - isc_sha384_update(&ctx->sha384ctx, opad, sizeof(opad)); - isc_sha384_update(&ctx->sha384ctx, newdigest, ISC_SHA384_DIGESTLENGTH); - isc_sha384_final(newdigest, &ctx->sha384ctx); - memcpy(digest, newdigest, len); - memset(newdigest, 0, sizeof(newdigest)); -} - -/* - * Verify signature - finalize SHA384 operation and reapply SHA384, then - * compare to the supplied digest. - */ -isc_boolean_t -isc_hmacsha384_verify(isc_hmacsha384_t *ctx, unsigned char *digest, size_t len) { - unsigned char newdigest[ISC_SHA384_DIGESTLENGTH]; - - REQUIRE(len <= ISC_SHA384_DIGESTLENGTH); - isc_hmacsha384_sign(ctx, newdigest, ISC_SHA384_DIGESTLENGTH); - return (ISC_TF(memcmp(digest, newdigest, len) == 0)); -} - -/* - * Start HMAC-SHA512 process. Initialize an sha512 context and digest the key. - */ -void -isc_hmacsha512_init(isc_hmacsha512_t *ctx, const unsigned char *key, - unsigned int len) -{ - unsigned char ipad[ISC_SHA512_BLOCK_LENGTH]; - unsigned int i; - - memset(ctx->key, 0, sizeof(ctx->key)); - if (len > sizeof(ctx->key)) { - isc_sha512_t sha512ctx; - isc_sha512_init(&sha512ctx); - isc_sha512_update(&sha512ctx, key, len); - isc_sha512_final(ctx->key, &sha512ctx); - } else - memcpy(ctx->key, key, len); - - isc_sha512_init(&ctx->sha512ctx); - memset(ipad, IPAD, sizeof(ipad)); - for (i = 0; i < ISC_SHA512_BLOCK_LENGTH; i++) - ipad[i] ^= ctx->key[i]; - isc_sha512_update(&ctx->sha512ctx, ipad, sizeof(ipad)); -} - -void -isc_hmacsha512_invalidate(isc_hmacsha512_t *ctx) { - memset(ctx->key, 0, sizeof(ctx->key)); - memset(ctx, 0, sizeof(ctx)); -} - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -void -isc_hmacsha512_update(isc_hmacsha512_t *ctx, const unsigned char *buf, - unsigned int len) -{ - isc_sha512_update(&ctx->sha512ctx, buf, len); -} - -/* - * Compute signature - finalize SHA512 operation and reapply SHA512. - */ -void -isc_hmacsha512_sign(isc_hmacsha512_t *ctx, unsigned char *digest, size_t len) { - unsigned char opad[ISC_SHA512_BLOCK_LENGTH]; - unsigned char newdigest[ISC_SHA512_DIGESTLENGTH]; - unsigned int i; - - REQUIRE(len <= ISC_SHA512_DIGESTLENGTH); - isc_sha512_final(newdigest, &ctx->sha512ctx); - - memset(opad, OPAD, sizeof(opad)); - for (i = 0; i < ISC_SHA512_BLOCK_LENGTH; i++) - opad[i] ^= ctx->key[i]; - - isc_sha512_init(&ctx->sha512ctx); - isc_sha512_update(&ctx->sha512ctx, opad, sizeof(opad)); - isc_sha512_update(&ctx->sha512ctx, newdigest, ISC_SHA512_DIGESTLENGTH); - isc_sha512_final(newdigest, &ctx->sha512ctx); - memcpy(digest, newdigest, len); - memset(newdigest, 0, sizeof(newdigest)); -} - -/* - * Verify signature - finalize SHA512 operation and reapply SHA512, then - * compare to the supplied digest. - */ -isc_boolean_t -isc_hmacsha512_verify(isc_hmacsha512_t *ctx, unsigned char *digest, size_t len) { - unsigned char newdigest[ISC_SHA512_DIGESTLENGTH]; - - REQUIRE(len <= ISC_SHA512_DIGESTLENGTH); - isc_hmacsha512_sign(ctx, newdigest, ISC_SHA512_DIGESTLENGTH); - return (ISC_TF(memcmp(digest, newdigest, len) == 0)); -} |
