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package org.spongycastle.ocsp.test;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;
import java.util.Date;
import javax.crypto.KeyGenerator;
import org.spongycastle.asn1.ASN1InputStream;
import org.spongycastle.asn1.ASN1Sequence;
import org.spongycastle.asn1.x509.AuthorityKeyIdentifier;
import org.spongycastle.asn1.x509.BasicConstraints;
import org.spongycastle.asn1.x509.SubjectKeyIdentifier;
import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
import org.spongycastle.asn1.x509.X509Extensions;
import org.spongycastle.asn1.x509.X509Name;
import org.spongycastle.x509.X509V3CertificateGenerator;
public class OCSPTestUtil
{
public static SecureRandom rand;
public static KeyPairGenerator kpg, eckpg;
public static KeyGenerator desede128kg;
public static KeyGenerator desede192kg;
public static KeyGenerator rc240kg;
public static KeyGenerator rc264kg;
public static KeyGenerator rc2128kg;
public static BigInteger serialNumber;
public static final boolean DEBUG = true;
static
{
try
{
rand = new SecureRandom();
kpg = KeyPairGenerator.getInstance("RSA", "SC");
kpg.initialize(1024, rand);
serialNumber = new BigInteger("1");
eckpg = KeyPairGenerator.getInstance("ECDSA", "SC");
eckpg.initialize(192, rand);
}
catch(Exception ex)
{
throw new RuntimeException(ex.toString());
}
}
public static KeyPair makeKeyPair()
{
return kpg.generateKeyPair();
}
public static KeyPair makeECKeyPair()
{
return eckpg.generateKeyPair();
}
public static X509Certificate makeCertificate(KeyPair _subKP,
String _subDN, KeyPair _issKP, String _issDN)
throws Exception
{
return makeCertificate(_subKP, _subDN, _issKP, _issDN, false);
}
public static X509Certificate makeECDSACertificate(KeyPair _subKP,
String _subDN, KeyPair _issKP, String _issDN)
throws Exception
{
return makeECDSACertificate(_subKP, _subDN, _issKP, _issDN, false);
}
public static X509Certificate makeCACertificate(KeyPair _subKP,
String _subDN, KeyPair _issKP, String _issDN)
throws Exception
{
return makeCertificate(_subKP, _subDN, _issKP, _issDN, true);
}
public static X509Certificate makeCertificate(KeyPair _subKP,
String _subDN, KeyPair _issKP, String _issDN, boolean _ca)
throws Exception
{
return makeCertificate(_subKP,_subDN, _issKP, _issDN, "MD5withRSA", _ca);
}
public static X509Certificate makeECDSACertificate(KeyPair _subKP,
String _subDN, KeyPair _issKP, String _issDN, boolean _ca)
throws Exception
{
return makeCertificate(_subKP,_subDN, _issKP, _issDN, "SHA1WithECDSA", _ca);
}
public static X509Certificate makeCertificate(KeyPair _subKP,
String _subDN, KeyPair _issKP, String _issDN, String algorithm, boolean _ca)
throws Exception
{
PublicKey _subPub = _subKP.getPublic();
PrivateKey _issPriv = _issKP.getPrivate();
PublicKey _issPub = _issKP.getPublic();
X509V3CertificateGenerator _v3CertGen = new X509V3CertificateGenerator();
_v3CertGen.reset();
_v3CertGen.setSerialNumber(allocateSerialNumber());
_v3CertGen.setIssuerDN(new X509Name(_issDN));
_v3CertGen.setNotBefore(new Date(System.currentTimeMillis()));
_v3CertGen.setNotAfter(new Date(System.currentTimeMillis()
+ (1000L * 60 * 60 * 24 * 100)));
_v3CertGen.setSubjectDN(new X509Name(_subDN));
_v3CertGen.setPublicKey(_subPub);
_v3CertGen.setSignatureAlgorithm(algorithm);
_v3CertGen.addExtension(X509Extensions.SubjectKeyIdentifier, false,
createSubjectKeyId(_subPub));
_v3CertGen.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
createAuthorityKeyId(_issPub));
_v3CertGen.addExtension(X509Extensions.BasicConstraints, false,
new BasicConstraints(_ca));
X509Certificate _cert = _v3CertGen.generate(_issPriv);
_cert.checkValidity(new Date());
_cert.verify(_issPub);
return _cert;
}
/*
*
* INTERNAL METHODS
*
*/
private static AuthorityKeyIdentifier createAuthorityKeyId(PublicKey _pubKey)
throws IOException
{
ByteArrayInputStream _bais = new ByteArrayInputStream(_pubKey
.getEncoded());
SubjectPublicKeyInfo _info = new SubjectPublicKeyInfo(
(ASN1Sequence)new ASN1InputStream(_bais).readObject());
return new AuthorityKeyIdentifier(_info);
}
private static SubjectKeyIdentifier createSubjectKeyId(PublicKey _pubKey)
throws IOException
{
ByteArrayInputStream _bais = new ByteArrayInputStream(_pubKey
.getEncoded());
SubjectPublicKeyInfo _info = new SubjectPublicKeyInfo(
(ASN1Sequence)new ASN1InputStream(_bais).readObject());
return new SubjectKeyIdentifier(_info);
}
private static BigInteger allocateSerialNumber()
{
BigInteger _tmp = serialNumber;
serialNumber = serialNumber.add(BigInteger.valueOf(1));
return _tmp;
}
}
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