package org.jboss.resteasy.security;
import java.io.DataInputStream;
import java.io.InputStream;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
Extract PrivateKey, PublicKey, and X509Certificate from a DER encoded byte array or file. Usually
generated from openssl
Author: Bill Burke Version: $Revision: 1 $
/**
* Extract PrivateKey, PublicKey, and X509Certificate from a DER encoded byte array or file. Usually
* generated from openssl
*
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class DerUtils
{
static
{
BouncyIntegration.init();
}
public static PrivateKey decodePrivateKey(InputStream is)
throws Exception
{
DataInputStream dis = new DataInputStream(is);
byte[] keyBytes = new byte[dis.available()];
dis.readFully(keyBytes);
dis.close();
PKCS8EncodedKeySpec spec =
new PKCS8EncodedKeySpec(keyBytes);
KeyFactory kf = KeyFactory.getInstance("RSA", "BC");
return kf.generatePrivate(spec);
}
public static PublicKey decodePublicKey(byte[] der) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchProviderException
{
X509EncodedKeySpec spec =
new X509EncodedKeySpec(der);
KeyFactory kf = KeyFactory.getInstance("RSA", "BC");
return kf.generatePublic(spec);
}
public static X509Certificate decodeCertificate(InputStream is) throws Exception
{
CertificateFactory cf = CertificateFactory.getInstance("X.509", "BC");
X509Certificate cert = (X509Certificate) cf.generateCertificate(is);
is.close();
return cert;
}
public static PrivateKey decodePrivateKey(byte[] der) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchProviderException
{
PKCS8EncodedKeySpec spec =
new PKCS8EncodedKeySpec(der);
KeyFactory kf = KeyFactory.getInstance("RSA", "BC");
return kf.generatePrivate(spec);
}
}