org.graylog2.security.AccessTokenCipher Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.security;
import com.google.common.hash.Hashing;
import org.graylog2.Configuration;
import javax.inject.Inject;
import static java.nio.charset.StandardCharsets.UTF_8;
public class AccessTokenCipher {
private final byte[] encryptionKey;
@Inject
public AccessTokenCipher(Configuration configuration) {
// The password secret is only required to be at least 16 bytes long. Since the encryptSiv/decryptSiv methods
// in AESTools require an encryption key that is at least 32 bytes long, we create a hash of the value.
encryptionKey = Hashing.sha256().hashString(configuration.getPasswordSecret(), UTF_8).asBytes();
}
public String encrypt(String cleartext) {
return AESTools.encryptSiv(cleartext, encryptionKey);
}
public String decrypt(String ciphertext) {
return AESTools.decryptSiv(ciphertext, encryptionKey);
}
}