1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 

    19 

    20 package java.security;

    21 

    22 

    23 import com.nokia.mj.impl.security.SignatureImpl;

    24 import java.security.PrivSignatureImpl;

    25 

    26 /**

    27  * Refer JSR-177 Specification for details

    28  */

    29 public abstract class Signature

    30 {

    31     /**

    32      * Signature implementation

    33      */

    34     private SignatureImpl iSignature;

    35 

    36     /**

    37      * Package private constructor.

    38      */

    39     Signature(SignatureImpl aSignature)

    40     {

    41         iSignature = aSignature;

    42     }

    43 

    44     /**

    45     * Refer JSR-177 Specification for details

    46     */

    47     static public Signature getInstance(String aAlgorithm)

    48     throws NoSuchAlgorithmException

    49     {

    50         SignatureImpl signatureImpl = new SignatureImpl(aAlgorithm);

    51         return new PrivSignatureImpl(signatureImpl);

    52     }

    53 

    54     /**

    55     * Refer JSR-177 Specification for details

    56     */

    57     public final void initVerify(PublicKey aPublicKey)

    58     throws InvalidKeyException

    59     {

    60         iSignature.initVerifyImpl(aPublicKey);

    61     }

    62 

    63     /**

    64     * Refer JSR-177 Specification for details

    65     */

    66     public final void update(byte[] aData, int aOffset, int aLength)

    67     throws SignatureException

    68     {

    69         iSignature.updateImpl(aData, aOffset, aLength);

    70     }

    71 

    72     /**

    73     * Refer JSR-177 Specification for details

    74     */

    75     public final boolean verify(byte[] aSignature) throws SignatureException

    76     {

    77         return iSignature.verifyImpl(aSignature);

    78     }

    79 

    80 }