Java使用DSA密钥对生成XML签名的方法

2019-12-12 14:59鉴客 JAVA教程

这篇文章主要介绍了Java使用DSA密钥对生成XML签名的方法,实例分析了java使用DSA密钥对生成XML签名的技巧,具有一定参考借鉴价值,需要的朋友可以参考下

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);

	  }

	}