Java使用DSA密钥对生成XML签名的方法

本文实例讲述了Java使用DSA密钥对生成XML签名的方法。分享给大家供大家参考。具体实现方法如下：

MainClass.java代码如下：

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.SecureRandom;

import java.util.Collections;

import javax.xml.crypto.dsig.CanonicalizationMethod;

import javax.xml.crypto.dsig.DigestMethod;

import javax.xml.crypto.dsig.Reference;

import javax.xml.crypto.dsig.SignatureMethod;

import javax.xml.crypto.dsig.SignedInfo;

import javax.xml.crypto.dsig.XMLSignature;

import javax.xml.crypto.dsig.XMLSignatureFactory;

import javax.xml.crypto.dsig.keyinfo.KeyInfo;

import javax.xml.crypto.dsig.keyinfo.KeyInfoFactory;

import javax.xml.crypto.dsig.keyinfo.KeyValue;

import javax.xml.crypto.dsig.spec.C14NMethodParameterSpec;

public class MainClass {

  public static void main(String[] args) throws Exception {

    KeyPairGenerator kpg = KeyPairGenerator.getInstance("DSA");

    kpg.initialize(1024, new SecureRandom());

    KeyPair dsaKeyPair = kpg.generateKeyPair();

    XMLSignatureFactory sigFactory = XMLSignatureFactory.getInstance();

    Reference ref = sigFactory.newReference("#Body", sigFactory.newDigestMethod(DigestMethod.SHA1, null));

    SignedInfo signedInfo = sigFactory.newSignedInfo(sigFactory.newCanonicalizationMethod(

        CanonicalizationMethod.INCLUSIVE_WITH_COMMENTS, (C14NMethodParameterSpec) null), sigFactory.newSignatureMethod(SignatureMethod.DSA_SHA1, null), Collections.singletonList(ref));

    KeyInfoFactory kif = sigFactory.getKeyInfoFactory();

    KeyValue kv = kif.newKeyValue(dsaKeyPair.getPublic());

    KeyInfo keyInfo = kif.newKeyInfo(Collections.singletonList(kv));

    XMLSignature xmlSig = sigFactory.newXMLSignature(signedInfo, keyInfo);

  }

}

希望本文所述对大家的java程序设计有所帮助。