/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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/*
* $Id: HMACParameterSpec.java,v 1.4 2005/05/10 16:40:17 mullan Exp $
*/
package javax.xml.crypto.dsig.spec;
import javax.xml.crypto.dsig.SignatureMethod;
/**
* Parameters for the <a href="http://www.w3.org/TR/xmldsig-core/#sec-MACs">
* XML Signature HMAC Algorithm</a>. The parameters include an optional output
* length which specifies the MAC truncation length in bits. The resulting
* HMAC will be truncated to the specified number of bits. If the parameter is
* not specified, then this implies that all the bits of the hash are to be
* output. The XML Schema Definition of the <code>HMACOutputLength</code>
* element is defined as:
* <pre><code>
* <element name="HMACOutputLength" minOccurs="0" type="ds:HMACOutputLengthType"/>
* <simpleType name="HMACOutputLengthType">
* <restriction base="integer"/>
* </simpleType>
* </code></pre>
*
* @author Sean Mullan
* @author JSR 105 Expert Group
* @since 1.6
* @see SignatureMethod
* @see <a href="http://www.ietf.org/rfc/rfc2104.txt">RFC 2104</a>
*/
public final class HMACParameterSpec implements SignatureMethodParameterSpec {
private int outputLength;
/**
* Creates an <code>HMACParameterSpec</code> with the specified truncation
* length.
*
* @param outputLength the truncation length in number of bits
*/
public HMACParameterSpec(int outputLength) {
this.outputLength = outputLength;
}
/**
* Returns the truncation length.
*
* @return the truncation length in number of bits
*/
public int getOutputLength() {
return outputLength;
}
}