DigestMethod (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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javax.xml.crypto.dsig
Interface DigestMethod

All Superinterfaces:: AlgorithmMethod, XMLStructure

public interface DigestMethod
extends XMLStructure, AlgorithmMethod
extends XMLStructure, AlgorithmMethod

A representation of the XML DigestMethod element as defined in the W3C Recommendation for XML-Signature Syntax and Processing. The XML Schema Definition is defined as:

   <element name="DigestMethod" type="ds:DigestMethodType"/>
     <complexType name="DigestMethodType" mixed="true">
       <sequence>
         <any namespace="##any" minOccurs="0" maxOccurs="unbounded"/>
           <!-- (0,unbounded) elements from (1,1) namespace -->
       </sequence>
       <attribute name="Algorithm" type="anyURI" use="required"/>
     </complexType>

A DigestMethod instance may be created by invoking the newDigestMethod method of the XMLSignatureFactory class.

Since:: 1.6
See Also:: XMLSignatureFactory.newDigestMethod(String, DigestMethodParameterSpec)

Field Summary

static String RIPEMD160
          The RIPEMD-160 digest method algorithm URI.

static String SHA1
          The SHA1 digest method algorithm URI.

static String SHA256
          The SHA256 digest method algorithm URI.

static String SHA512
          The SHA512 digest method algorithm URI.

Method Summary

AlgorithmParameterSpec getParameterSpec()
          Returns the algorithm-specific input parameters associated with this DigestMethod.

Methods inherited from interface javax.xml.crypto.XMLStructure

isFeatureSupported

Methods inherited from interface javax.xml.crypto.AlgorithmMethod

getAlgorithm

Field Summary
`static String`	`RIPEMD160` The RIPEMD-160 digest method algorithm URI.
`static String`	`SHA1` The SHA1 digest method algorithm URI.
`static String`	`SHA256` The SHA256 digest method algorithm URI.
`static String`	`SHA512` The SHA512 digest method algorithm URI.

Method Summary
`AlgorithmParameterSpec`	`getParameterSpec()` Returns the algorithm-specific input parameters associated with this `DigestMethod`.

Methods inherited from interface javax.xml.crypto.XMLStructure
`isFeatureSupported`

Methods inherited from interface javax.xml.crypto.AlgorithmMethod
`getAlgorithm`

Field Detail

SHA1

static final String SHA1

The SHA1 digest method algorithm URI.

See Also:: Constant Field Values

SHA256

static final String SHA256

The SHA256 digest method algorithm URI.

See Also:: Constant Field Values

SHA512

static final String SHA512

The SHA512 digest method algorithm URI.

See Also:: Constant Field Values

RIPEMD160

static final String RIPEMD160

The RIPEMD-160 digest method algorithm URI.

See Also:: Constant Field Values

Method Detail

getParameterSpec

AlgorithmParameterSpec getParameterSpec()

Returns the algorithm-specific input parameters associated with this DigestMethod.

The returned parameters can be typecast to a DigestMethodParameterSpec object.

Specified by:: getParameterSpec in interface AlgorithmMethod

Returns:: the algorithm-specific parameters (may be null if not specified)