--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoservices/certificateandkeymgmt/inc/pkcs7digestinfo.h	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,135 @@
+/*
+* Copyright (c) 2005-2009 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: 
+*
+*/
+
+
+
+
+/**
+ @file
+ @publishedPartner
+ @released
+*/
+
+#ifndef __PKCS7_DIGEST_INFO_H__
+#define __PKCS7_DIGEST_INFO_H__
+
+#include <e32base.h>
+#include <x509cert.h>
+#include <signed.h>
+#include <asn1dec.h>
+
+/**
+ Provides the means to decode PKCS#7 encoded DigestInfo Structure.
+ */
+class CPKCS7DigestInfo : public CBase
+	{
+public:	
+	/**
+	 Creates a new PKCS#7 DigestInfo object. 
+	 @param     aRawData contains a PKCS#7 DigestInfo Structure
+	 @return    A pointer to the newly allocated object.
+	 @leave 	KErrArgument if digestAlgorithm and digest is not present.
+	 @leave 	KErrNotSupported if algorithm is other than MD2, MD5 and SHA1.
+	 */
+    IMPORT_C static CPKCS7DigestInfo* NewL(const TDesC8& aRawData);
+    
+    /**
+	 An Algorithm present DigestAlgorithmIdentifier.
+     @return    The enum which identifies the type of Algorithm
+                used to obtain the hash.
+     */   
+	IMPORT_C TAlgorithmId Algorithm() const;
+	
+	/**
+	 Encoded Parameters present in the DigestAlgorithmIdentifier.
+	 The client has to check for data length. It is 0 in case there are no EncodedParams
+	 @return    The Encoded Parameters which is in the DigestAlgorithmIdentifier.
+     */     
+	IMPORT_C const TPtrC8& EncodedParams() const;
+	
+	/**
+	 The Digest which is in the DigestInfo.
+	 @return    The Digest which is in the DigestInfo and is an Octet String.
+     */
+	IMPORT_C const TDesC8& Digest() const;
+	
+	/**
+	 Destructor.
+	 */
+	virtual ~CPKCS7DigestInfo();
+	
+private:
+	/**
+	 Constructor.
+	 */
+    CPKCS7DigestInfo(); 
+    
+    /**
+	 Copy Constructor.
+	 @param aDigestInfo A CPKCS7DigestInfo object.
+	 */
+	CPKCS7DigestInfo(const CPKCS7DigestInfo& aDigestInfo);
+	
+	/**
+	 Assignment operator.
+	 @param aDigestInfo A CPKCS7DigestInfo object.
+	 @return A reference to CPKCS7DigestInfo class.
+	 */
+	CPKCS7DigestInfo& operator=(const CPKCS7DigestInfo& aDigestInfo);
+    
+	/**
+	 Decodes the given ASN1 DigestInfo. Below is the ASN1 syntax
+	
+	 DigestInfo ::= SEQUENCE
+	 	{
+	    digestAlgorithm  DigestAlgorithmIdentifier,
+	    digest           Digest
+	    }
+	 Digest ::= OCTET String	 
+	 DigestAlgorithmIdentifier ::= AlgorithmIdentifier
+	 AlgorithmIdentifier ::= SEQUENCE 
+	 	{
+	    algorithm   ALGORITHM.&id({SupportedAlgorithms}),
+	    parameters  ALGORITHM.&Type({SupportedAlgorithms}{@ algorithm}) OPTIONAL
+	    }
+	    
+	 @param     aRawData A descriptor containing the PKCS7 DigestInfo Sequence.
+	 @leave KErrArgument if digestAlgorithm and digest is not present.
+	 @leave KErrNotSupported if algorithm is other than MD2, MD5 and SHA1.
+	 @see TASN1DecGeneric, CX509AlgorithmIdentifier.
+	 */
+    void ConstructL(const TDesC8& aRawData);
+    
+private:
+    /** 
+     The object identifier which identifies the message-digest algorithm.
+	 A message-digest algorithm maps an octet string (the message) to 
+	 another octet string (the message digest) 
+	 */
+	TAlgorithmId iAlgorithmId;
+	
+	/** Encoded Parameters which is in the DigestAlgorithmIdentifier */
+    TPtrC8 iEncodedParams;
+	
+	/** 
+	 The Digest is present in the DigestInfo. 
+	 It is the result of the message-digesting process 
+	 */
+	TPtrC8 iDigest;
+	};
+	
+#endif //__PKCS7_DIGEST_INFO_H__