/*
* The MIT License
*
* Copyright (c) 2015, CloudBees, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package jenkins.security;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import java.security.Signature;
import java.security.interfaces.RSAPrivateKey;
/**
* RSA digital signature as {@link ConfidentialKey} to prevent accidental leak of private key.
*
* @author Kohsuke Kawaguchi
*/
public class RSADigitalSignatureConfidentialKey extends RSAConfidentialKey {
public RSADigitalSignatureConfidentialKey(String id) {
super(id);
}
public RSADigitalSignatureConfidentialKey(Class owner, String shortName) {
super(owner, shortName);
}
/**
* Sign a message and base64 encode the signature.
*/
public String sign(String msg) {
try {
RSAPrivateKey key = getPrivateKey();
Signature sig = Signature.getInstance(SIGNING_ALGORITHM + "with" + key.getAlgorithm());
sig.initSign(key);
sig.update(msg.getBytes("UTF-8"));
return hudson.remoting.Base64.encode(sig.sign());
} catch (GeneralSecurityException e) {
throw new SecurityException(e);
} catch (UnsupportedEncodingException e) {
throw new AssertionError(e); // UTF-8 is mandatory
}
}
static final String SIGNING_ALGORITHM = "SHA256";
}