Security-57031.1.35.tar.gz

[apple/security.git] / SecurityTests / cspxutils / utilLib / nssAppUtils.cpp

diff --git a/SecurityTests/cspxutils/utilLib/nssAppUtils.cpp b/SecurityTests/cspxutils/utilLib/nssAppUtils.cpp
new file mode 100644 (file)
index 0000000..d1c7e21
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+++ b/SecurityTests/cspxutils/utilLib/nssAppUtils.cpp
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+/*
+ * Copyright (c) 2003-2004 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.
+ */
+/*
+ * nssAppUtils.cpp
+ */
+ 
+#include "nssAppUtils.h"
+#include "common.h"
+#include "cspwrap.h"
+#include <Security/SecAsn1Coder.h>
+#include <Security/osKeyTemplates.h>   
+#include <stdlib.h>
+#include <stdio.h>
+#include <strings.h>
+
+/*
+ * Create pubKeyPartial as copy of pubKey without the DSA params.
+ * Returned partial key is RAW. Incoming key can be raw or ref.
+ */
+CSSM_RETURN extractDsaPartial(
+       CSSM_CSP_HANDLE cspHand,
+       const CSSM_KEY *pubKey, 
+       CSSM_KEY_PTR pubKeyPartial)
+{
+       const CSSM_KEY *thePubKey = pubKey;
+       CSSM_KEY rawPubKey;
+       CSSM_RETURN crtn;
+       
+       if(pubKey->KeyHeader.BlobType == CSSM_KEYBLOB_REFERENCE) {
+               /* first get this in raw form */
+               crtn = cspRefKeyToRaw(cspHand, pubKey, &rawPubKey);
+               if(crtn) {
+                       return crtn;
+               }
+               thePubKey = &rawPubKey;
+       }
+       
+       /* decode raw public key */
+       NSS_DSAPublicKeyX509 nssPub;
+       SecAsn1CoderRef coder;
+       
+       OSStatus ortn = SecAsn1CoderCreate(&coder);
+       if(ortn) {
+               cssmPerror("SecAsn1CoderCreate", ortn);
+               return ortn;
+       }
+       memset(&nssPub, 0, sizeof(nssPub));
+       if(SecAsn1DecodeData(coder, &thePubKey->KeyData, kSecAsn1DSAPublicKeyX509Template,
+                       &nssPub)) {
+               printf("***Error decoding DSA public key. Aborting.\n");
+               return 1;
+       }
+       
+       /* zero out the params and reencode */
+       nssPub.dsaAlg.params = NULL;
+       CSSM_DATA newKey = {0, NULL};
+       if(SecAsn1EncodeItem(coder, &nssPub, kSecAsn1DSAPublicKeyX509Template,
+                       &newKey)) {
+               printf("***Error reencoding DSA pub key\n");
+               return 1;
+       }
+       
+       /* copy - newKey is in coder space */
+       *pubKeyPartial = *thePubKey;
+       appCopyCssmData(&newKey, &pubKeyPartial->KeyData);
+
+       if(pubKey->KeyHeader.BlobType == CSSM_KEYBLOB_REFERENCE) {
+               /* free the KeyData mallocd by cspRefKeyToRaw */
+               CSSM_FREE(thePubKey->KeyData.Data);
+               pubKeyPartial->KeyHeader.BlobType = CSSM_KEYBLOB_RAW;
+       }
+       pubKeyPartial->KeyHeader.KeyAttr |= CSSM_KEYATTR_PARTIAL;
+       SecAsn1CoderRelease(coder);
+       return CSSM_OK;
+}