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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.auth.saml;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Base64;
import org.sonar.api.server.ServerSide;
@ServerSide
class SamlPrivateKeyConverter {
PrivateKey toPrivateKey(String privateKeyString) {
String cleanedPrivateKeyString = sanitizePrivateKeyString(privateKeyString);
byte[] decoded = Base64.getDecoder().decode(cleanedPrivateKeyString);
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(decoded);
try {
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
return keyFactory.generatePrivate(keySpec);
} catch (NoSuchAlgorithmException | InvalidKeySpecException e) {
throw new IllegalArgumentException("Error while loading PKCS8 private key, please check the format", e);
}
}
private static String sanitizePrivateKeyString(String privateKeyString) {
return privateKeyString
.replace("-----BEGIN PRIVATE KEY-----", "")
.replace("-----END PRIVATE KEY-----", "")
.replaceAll("\\s+", "");
}
}
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