X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_cryptkit/lib/HmacSha1Legacy.c

diff --git a/libsecurity_cryptkit/lib/HmacSha1Legacy.c b/libsecurity_cryptkit/lib/HmacSha1Legacy.c
deleted file mode 100644
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--- a/libsecurity_cryptkit/lib/HmacSha1Legacy.c
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-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- * 
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-/*
- 	File:		HmacSha1Legacy.c
- 	Contains:	HMAC/SHA1, bug-for-bug compatible with BSAFE 4.0.
- 	Copyright:	(C) 2001 by Apple Computer, Inc., all rights reserved
- 	Written by:	Doug Mitchell
-*/
-
-#include "ckconfig.h"
-
-#if	CRYPTKIT_HMAC_LEGACY
-
-#include "HmacSha1Legacy.h"
-#include "ckSHA1.h"
-#include <string.h>
-#include <stdlib.h>
-#include <Security/SecBase.h>
-#define kHMACSHA1DigestSize  20
-
-/* XXX These should really be in ckSHA1.h */
-#define kSHA1DigestSize  	20
-#define kSHA1BlockSize  	64
-
-/*
- * bug-for-bug compatible with BSAFE 4.0. See
- * BSafe/bsource/algs/ahchhmac.c.
- *
- * This implementation, and the BSAFE implementation it emulates, work fine 
- * when calculating a MAC in a single update (init, update, final). They 
- * generate nonconforming MACs when performing multiple updates because 
- * the entire algorithm - both inner and outer digests - are performed 
- * in the update() step. As a result, if one e.g. calculates a MAC of 
- * a block of text with one update, and then calculates the MAC over the 
- * same block of text via two updates, different results will obtain.ÊThe 
- * incorrect result from the multiple-update scenario is repeatable if and 
- * only if the same boundaries (same update sizes) are observed on each operation. 
- *
- * Because all of the data to be MAC'd is in fact protected by both levels of 
- * SHA1, and all of the key bits are used, this nonconforming implementation is
- * believed to be as strong, cryptographically, as a conforming SHA1HMAC
- * implementation. 
- */
-struct hmacLegacyContext {
-	sha1Obj sha1Context;
-	UInt8 	k_ipad[kSHA1BlockSize];
-	UInt8 	k_opad[kSHA1BlockSize];
-};
-
-hmacLegacyContextRef hmacLegacyAlloc(void)
-{
-	hmacLegacyContextRef hmac = 
-		(hmacLegacyContextRef)malloc(sizeof(struct hmacLegacyContext));
-	memset(hmac, 0, sizeof(struct hmacLegacyContext));
-	return hmac;
-}
-
-void hmacLegacyFree(
-	hmacLegacyContextRef hmac)
-{
-	if(hmac != NULL) {
-		if(hmac->sha1Context != NULL) {
-			sha1Free (hmac->sha1Context);
-		}
-		memset(hmac, 0, sizeof(struct hmacLegacyContext));
-		free(hmac);
-	}
-}
-
-/* reusable init */
-OSStatus hmacLegacyInit(
-	hmacLegacyContextRef hmac,
-	const void *keyPtr,
-	UInt32 keyLen)
-{	
-	UInt8 	*key;
-	UInt32 	byte;
-
-	if(hmac->sha1Context == NULL) {
-		hmac->sha1Context = sha1Alloc();
-		if(hmac->sha1Context == NULL) {
-			return errSecAllocate;
-		}
-	}
-	else {
-		sha1Reinit(hmac->sha1Context);
-	}
-	/* this implementation requires a 20-byte key */
-	if (keyLen != kSHA1DigestSize) {
-		/* FIXME */
-		return errSecParam;
-	}
-	key = (UInt8*)keyPtr;
-	
-	/* The HMAC_SHA_1 transform looks like:
-	   SHA1 (K XOR opad || SHA1 (K XOR ipad || text))
-	   Where K is a n byte key
-	   ipad is the byte 0x36 repeated 64 times.
-	   opad is the byte 0x5c repeated 64 times.
-	   text is the data being protected.
-	  */
-	/* Copy the key into k_ipad and k_opad while doing the XOR. */
-	for (byte = 0; byte < keyLen; byte++)
-	{
-		hmac->k_ipad[byte] = key[byte] ^ 0x36;
-		hmac->k_opad[byte] = key[byte] ^ 0x5c;
-	}
-
-	/* Fill the remainder of k_ipad and k_opad with 0 XORed with 
-	 * appropriate value. */
-	memset (hmac->k_ipad + keyLen, 0x36, kSHA1BlockSize - keyLen);
-	memset (hmac->k_opad + keyLen, 0x5c, kSHA1BlockSize - keyLen);
-	
-	/* remainder happens in update */
-	return errSecSuccess;
-}
-
-OSStatus hmacLegacyUpdate(
-	hmacLegacyContextRef hmac,
-	const void *textPtr,
-	UInt32 textLen)
-{
-	UInt8 innerDigest[kSHA1DigestSize];
-	
-	/* compute SHA1(k_ipad || data) ==> innerDigest */
-	sha1AddData (hmac->sha1Context, hmac->k_ipad, kSHA1BlockSize);
-	sha1AddData (hmac->sha1Context, (UInt8*)textPtr, textLen);
-	memcpy (innerDigest, sha1Digest(hmac->sha1Context), kSHA1DigestSize);
-	
-	/* reset context (BSAFE does this implicitly in a final() call) */
-	sha1Reinit(hmac->sha1Context);
-	
-	/* compute SHA1(k_opad || innerDigest) */
-	sha1AddData (hmac->sha1Context, hmac->k_opad, kSHA1BlockSize);
-	sha1AddData (hmac->sha1Context, innerDigest, kSHA1DigestSize);
-	
-	/* if there is another update coming, it gets added in to existing 
-	 * context; if the next step is a final, the current digest state is used. */
-	return errSecSuccess;
-}
-
-OSStatus hmacLegacyFinal(
-	hmacLegacyContextRef hmac,
-	void *resultPtr)		// caller mallocs, must be HMACSHA1_OUT_SIZE bytes
-{
-	memcpy (resultPtr, sha1Digest (hmac->sha1Context), kSHA1DigestSize);
-	return errSecSuccess;
-}
-
-#endif	/* CRYPTKIT_HMAC_LEGACY */