Class HMACParameterSpec

java.lang.Object

javax.xml.crypto.dsig.spec.HMACParameterSpec

All Implemented Interfaces:: AlgorithmParameterSpec, SignatureMethodParameterSpec

public final class HMACParameterSpec extends Object implements SignatureMethodParameterSpec

Parameters for the XML Signature HMAC Algorithm. 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 HMACOutputLength element is defined as:

<element name="HMACOutputLength" minOccurs="0" type="ds:HMACOutputLengthType"/>
<simpleType name="HMACOutputLengthType">
  <restriction base="integer"/>
</simpleType>

Since:

1.6

See Also:

Constructor Summary

Constructor	Description
`HMACParameterSpec(int outputLength)`	Creates an `HMACParameterSpec` with the specified truncation length.

Method Summary

Modifier and Type	Method	Description
`int`	`getOutputLength()`	Returns the truncation length.

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HMACParameterSpec

public HMACParameterSpec(int outputLength)

Creates an HMACParameterSpec with the specified truncation length.

Parameters:: outputLength - the truncation length in number of bits

Method Details

getOutputLength

public int getOutputLength()

Returns the truncation length.

Returns:: the truncation length in number of bits

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https://docs.oracle.com/en/java/javase/25/docs/api/java.xml.crypto/javax/xml/crypto/dsig/spec/HMACParameterSpec.html