--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoservices/certificateandkeymgmt/pkcs10/keyhelper.h	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,157 @@
+/*
+* Copyright (c) 2002-2009 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: 
+* Declares key helper classes for PKCS#10 that perform the algorithm dependant work.
+*
+*/
+
+
+
+
+/**
+ @file
+ @internalComponent
+ @released 
+*/
+
+#ifndef __PKCS10KEYHELPER_H__
+#define __PKCS10KEYHELPER_H__
+
+#include <mctkeystore.h>
+#include <x509keys.h>
+
+class CASN1EncBase;
+class CASN1EncSequence;
+class CASN1EncBitString;
+
+/**
+ * Abstract base class defines the interface for PKCS#10 key helpers.
+ *
+ * This class is fairly dumb, and provides a generic interface for various
+ * keystore functionality.  The methods are called from the RunL of
+ * CPKCS10Request.
+ *
+ * The implementation decodes the public key to create a public key object -
+ * this is pretty wasteful, as the first thing we're going to do is re-encode it
+ * again, mostly in exactly the same format.  However it's simpler and less
+ * error-prome to do it this way.
+ */
+class CPKCS10KeyHelper : public CBase
+	{
+ public:
+
+	/**
+	 * Create appropriate subclass of CPKCS10KeyHelper depending on key
+	 * alogorithm.
+	 *
+	 * @param aKeyStore The keystore to use - this object takes ownership.
+	 * @param aKeyInfo The key to use.
+	 */	
+	static CPKCS10KeyHelper* CreateKeyHelperL(MCTKeyStore& aKeyStore,
+											  const CCTKeyInfo& aKeyInfo,
+											  const TDesC8& aExportedKey,
+											  const TAlgorithmId aDigestId);
+
+	virtual ~CPKCS10KeyHelper();
+
+ public:
+
+	void FetchPublicKey(TRequestStatus& aStatus);
+	void CancelFetchPublicKey();
+
+	virtual void OpenSigner(TRequestStatus& aStatus) = 0;
+	virtual void CancelOpenSigner() = 0;
+
+	virtual void SignDigestL(const TDesC8& aDigest, TRequestStatus& aStatus) = 0;
+	virtual void CancelSignDigest() = 0;
+
+	virtual CASN1EncBase* EncodeKeyLC();
+	virtual CASN1EncSequence* EncodeSignatureAlgorithmLC();
+	virtual CASN1EncBitString* EncodeSignatureLC() = 0;
+	
+ protected:
+
+	CPKCS10KeyHelper(MCTKeyStore& aKeyStore, const CCTKeyInfo& aKeyInfo);
+
+	virtual void CreateKeyEncoderL(const TDesC8& aExportedKey,
+								   const TAlgorithmId aDigestId) = 0;
+	
+	CASN1EncBase* DigestInfoLC(const TDesC8& digest);
+
+ protected:
+
+	MCTKeyStore&		iKeyStore;
+	const CCTKeyInfo&	iKeyInfo;
+	TX509KeyEncoder*	iKeyEncoder;
+	};
+
+/**
+ * Implementation of PKCS#10 key helper for RSA keys.
+ */
+class CPKCS10RSAKeyHelper : public CPKCS10KeyHelper
+	{
+ public:
+
+	CPKCS10RSAKeyHelper(MCTKeyStore& aKeyStore, const CCTKeyInfo& aKeyInfo);
+	virtual ~CPKCS10RSAKeyHelper();
+
+ private:
+
+	virtual void OpenSigner(TRequestStatus& aStatus);
+	virtual void CancelOpenSigner();
+
+	virtual void SignDigestL(const TDesC8& aDigest, TRequestStatus& aStatus);
+	virtual void CancelSignDigest();	
+
+	virtual void CreateKeyEncoderL(const TDesC8& aExportedKey, const TAlgorithmId aDigestId);
+	virtual CASN1EncBitString* EncodeSignatureLC();
+
+private:
+
+	CRSAPublicKey*		iPublicKey;
+	MRSASigner*			iRSASigner;
+	CRSASignature*		iRSASignature;
+	HBufC8* 			iDigestBuf;
+	};
+
+/**
+ * Implementation of PKCS#10 key helper for DSA keys.
+ */
+class CPKCS10DSAKeyHelper : public CPKCS10KeyHelper
+	{
+ public:
+
+	CPKCS10DSAKeyHelper(MCTKeyStore& aKeyStore, const CCTKeyInfo& aKeyInfo);
+	virtual ~CPKCS10DSAKeyHelper();
+
+ private:
+	
+	virtual void OpenSigner(TRequestStatus& aStatus);
+	virtual void CancelOpenSigner();
+
+	virtual void SignDigestL(const TDesC8& aDigest, TRequestStatus& aStatus);
+	virtual void CancelSignDigest();	
+
+	virtual void CreateKeyEncoderL(const TDesC8& aExportedKey, const TAlgorithmId aDigestId);
+	virtual CASN1EncSequence* EncodeSignatureAlgorithmLC();
+	virtual CASN1EncBitString* EncodeSignatureLC();
+
+ private:
+
+ 	CDSAPublicKey* 		iPublicKey;
+	MDSASigner*			iDSASigner;
+	CDSASignature*		iDSASignature;
+	};
+
+#endif