--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javaextensions/satsa/crypto/src/stssignature.h	Mon May 03 12:27:20 2010 +0300
@@ -0,0 +1,100 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:  Provides the functionality of a digital signature algorithm
+ *
+*/
+
+
+#ifndef STSSIGNATURE_H
+#define STSSIGNATURE_H
+
+//  INCLUDES
+
+#include <jni.h>
+#include <openssl/evp.h>
+#include "javajniutils.h"
+
+namespace java
+{
+namespace satsa
+{
+
+/**
+ *  STSSignature provides the functionality of a digital signature algorithm.
+ *
+ *  Digital signatures are used for authentication and
+ *  integrity assurance of digital data.
+ *  There are three phases to the use of a Signature object
+ *  for verifying a signature:
+ *  1. Initialization, with a public key, which initializes the signature for
+ *     verification
+ *  2. Updating Depending on the type of initialization,
+ *     this will update the bytes to be verified.
+ *  3. Verifying a signature on all updated bytes.
+ *
+ */
+class STSSignature
+{
+public:
+
+    static STSSignature* Create();
+
+    virtual ~STSSignature();
+
+public:
+    /**
+     * Initializes this object for verification. If this method is called
+     * again with a different argument, it negates the effect of this call.
+     *
+     * @param aKey The public key of the identity whose signature is going
+     *        to be verified.
+     */
+    virtual int InitVerify(JNIEnv* aJni, jstring aKeyAlgorithm,
+                           jstring aKeyFormat, jbyteArray aKeyEncoded) = 0;
+
+    /**
+     * Updates the data to be verified.
+     *
+     * @param aData Data for update.
+     */
+    virtual int Update(JNIEnv* aJni, jbyteArray aData, jint aOffset,
+                       jint aLength);
+
+    /**
+     * Verifies the passed-in signature.
+     * A call to this method resets this signature object to the state it
+     * was in when previously initialized for verification via a call to
+     * InitVerify. That is, the object is reset and available to verify
+     * another signature from the identity whose public key was specified
+     * in the call to InitVerify.
+     *
+     * @param aSignature The signature to be verified.
+     * @return ETrue if the signature was verified, EFalse if not.
+     */
+    virtual int Verify(JNIEnv* aJni, jbyteArray aSignature) = 0;
+
+protected:
+
+    STSSignature();
+
+protected:
+
+    EVP_MD_CTX *mdctx;
+    const EVP_MD *md;
+    bool mIsUpdated;
+};
+} // namespace satsa
+} // namespace java
+#endif // STSSIGNATURE_H
+// End of File