X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_apple_csp/lib/DH_exchange.cpp

diff --git a/libsecurity_apple_csp/lib/DH_exchange.cpp b/libsecurity_apple_csp/lib/DH_exchange.cpp
deleted file mode 100644
index f09c83f7..00000000
--- a/libsecurity_apple_csp/lib/DH_exchange.cpp
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (c) 2000-2002 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.
- */
-
-
-/*
- * DH_exchange.cp - Diffie-Hellman key exchange
- */
- 
-#include "DH_exchange.h"
-#include <Security/cssmerr.h>
-#include "DH_utils.h"
-#include "DH_keys.h"
-#include <strings.h>
-#include <opensslUtils/opensslUtils.h>
-
-void DeriveKey_DH (
-	const Context &context,
-	const CssmData &Param,			// other's public key. may be empty
-	CSSM_DATA *keyData,				// mallocd by caller
-									// we fill in keyData->Length bytes
-	AppleCSPSession &session)
-{
-	bool mallocdPrivKey;
-	size_t privSize;
-	
-	/* private DH key from context - required */
-	DH *privKey = contextToDhKey(context, session, CSSM_ATTRIBUTE_KEY,
-		CSSM_KEYCLASS_PRIVATE_KEY, CSSM_KEYUSE_DERIVE, mallocdPrivKey);
-	if(privKey == NULL) {
-		CssmError::throwMe(CSSMERR_CSP_MISSING_ATTR_KEY);
-	}
-	cspDhDebug("DeriveKey_DH, privKey %p", privKey);
-	privSize = DH_size(privKey);
-	if(privSize < keyData->Length) {
-		/* we've been asked for more bits than this key can generate */
-		CssmError::throwMe(CSSMERR_CSP_UNSUPPORTED_KEY_SIZE);
-	}
-	
-	/*
-	 * Public key ("their" key) can come from two places:
-	 * -- in the context as a CSSM_ATTRIBUTE_PUBLIC_KEY. This is how 
-	 *    public keys in X509 format must be used in this function
-	 * -- in the incoming Param, the raw unformatted (PKCS3) form 
-	 */
-	bool mallocdPubKey = false;
-	BIGNUM *pubKeyBn = NULL;
-	bool allocdPubKeyBn = false;
-	DH *pubKey = contextToDhKey(context, session, CSSM_ATTRIBUTE_PUBLIC_KEY,
-		CSSM_KEYCLASS_PUBLIC_KEY, CSSM_KEYUSE_DERIVE, mallocdPubKey);
-	if(pubKey != NULL) {
-		if(pubKey->pub_key == NULL) {
-			errorLog0("DeriveKey_DH: public key in context with no pub_key\n");
-			CssmError::throwMe(CSSMERR_CSP_INVALID_KEY);
-		}
-		pubKeyBn = pubKey->pub_key;
-		cspDhDebug("DeriveKey_DH, pubKey from context %p", pubKey);
-	}
-	else {
-		if((Param.Data == NULL) || (Param.Length == 0)) {
-			errorLog0("DeriveKey_DH: no pub_key, no Param\n");
-			CssmError::throwMe(CSSMERR_CSP_INVALID_KEY);
-		}
-		pubKeyBn = BN_bin2bn(Param.Data, (int)Param.Length, NULL);
-		if(pubKeyBn == NULL) {
-			CssmError::throwMe(CSSMERR_CSP_MEMORY_ERROR);
-		}
-		allocdPubKeyBn = true;
-		cspDhDebug("DeriveKey_DH, no pubKey in context");
-	}
-	unsigned char *buf = (unsigned char *)session.malloc(privSize);
-	int rtn = DH_compute_key(buf, pubKeyBn, privKey);
-	if(rtn > 0) {
-		/*
-		 * FIXME : I have not found a specification describing *which*
-		 * bytes of the value we just computed we are supposed to
-		 * use as the actual key bytes. We use the M.S. bytes.
-		 *
-		 * Note that due to modulo arithmetic, we may have gotten fewer
-		 * bytes than we asked for. If so, the caller will have
-		 * to deal with that if they really need privSize bytes.
-		 */
-		assert((uint32)rtn <= privSize);
-		CSSM_SIZE toMove = keyData->Length;
-		if((uint32)rtn < toMove) {
-			toMove = (uint32)rtn;
-		}
-		memmove(keyData->Data, buf, toMove);
-		keyData->Length = toMove;
-	}
-	if(mallocdPrivKey) {
-		DH_free(privKey);
-	}
-	if(mallocdPubKey) {
-		DH_free(pubKey);
-	}
-	if(allocdPubKeyBn) {
-		BN_free(pubKeyBn);
-	}
-	session.free(buf);
-	if(rtn <= 0) {
-		throwRsaDsa("DH_compute_key");
-	}
-}
-