--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcrypto/source/asymmetric/rsasigner.cpp Fri Jun 11 15:32:35 2010 +0300
@@ -0,0 +1,105 @@
+/*
+* Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+
+#include <asymmetric.h>
+#include <asymmetrickeys.h>
+#include <bigint.h>
+#include <securityerr.h>
+#include "rsafunction.h"
+
+/* CRSASigner */
+
+EXPORT_C CRSASigner::CRSASigner(void)
+ {
+ }
+
+/* CRSAPKCS1v15Signer */
+EXPORT_C CRSAPKCS1v15Signer* CRSAPKCS1v15Signer::NewL(
+ const CRSAPrivateKey& aKey)
+ {
+ CRSAPKCS1v15Signer* self = NewLC(aKey);
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+EXPORT_C CRSAPKCS1v15Signer* CRSAPKCS1v15Signer::NewLC(
+ const CRSAPrivateKey& aKey)
+ {
+ CRSAPKCS1v15Signer* self = new(ELeave) CRSAPKCS1v15Signer(aKey);
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ return self;
+ }
+
+TInt CRSAPKCS1v15Signer::MaxInputLength(void) const
+ {
+ return MaxOutputLength() - iPadding->MinPaddingLength();
+ }
+
+TInt CRSAPKCS1v15Signer::MaxOutputLength(void) const
+ {
+ return iPrivateKey.N().ByteCount();
+ }
+
+CRSASignature* CRSAPKCS1v15Signer::SignL(const TDesC8& aInput) const
+ {
+ HBufC8* buf = HBufC8::NewMaxLC(MaxOutputLength());
+ TPtr8 ptr = buf->Des();
+
+ ptr.SetLength(aInput.Length());
+
+ //The following will panic if aInput is larger than MaxOutputLength() It is
+ //likely that the caller has passed in something that has not been hashed.
+ //This is a programming, and likely a security error, in client code, not a
+ //problem here.
+ iPadding->PadL(aInput, ptr);
+
+ RInteger input = RInteger::NewL(ptr);
+ CleanupStack::PushL(input);
+ RInteger output;
+
+ RSAFunction::SignL(iPrivateKey, input, output);
+ CleanupStack::PushL(output);
+
+ CRSASignature* signature = CRSASignature::NewL(output);
+ CleanupStack::Pop(&output); //output, now owned by CRSASignature
+ CleanupStack::PopAndDestroy(2, buf); //input, buf
+ return signature;
+ }
+
+CRSAPKCS1v15Signer::CRSAPKCS1v15Signer(const CRSAPrivateKey& aKey)
+ : iPrivateKey(aKey)
+ {
+ }
+
+void CRSAPKCS1v15Signer::ConstructL(void)
+ {
+ iPadding = CPaddingPKCS1Signature::NewL(MaxOutputLength());
+
+ // Check if MaxInputLength() makes sense, if not the key length must
+ // be too small
+ if(MaxInputLength() <= 0)
+ {
+ User::Leave(KErrKeySize);
+ }
+ }
+
+CRSAPKCS1v15Signer::~CRSAPKCS1v15Signer(void)
+ {
+ delete iPadding;
+ }