【Java】DSA鍵ペアを使用してXML署名を生成する

2014年7月12日

ファイル名
MainClass.java
サンプルコード：
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);
}
}