org.rapidoid.crypto.CryptoKey Maven / Gradle / Ivy
/*-
* #%L
* rapidoid-commons
* %%
* Copyright (C) 2014 - 2017 Nikolche Mihajlovski and contributors
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
package org.rapidoid.crypto;
import org.rapidoid.RapidoidThing;
import org.rapidoid.annotation.Authors;
import org.rapidoid.annotation.Since;
import org.rapidoid.commons.Arr;
@Authors("Nikolche Mihajlovski")
@Since("5.3.0")
public class CryptoKey extends RapidoidThing {
final byte[] encryptionKey;
final byte[] hmacKey;
public CryptoKey(byte[] encryptionKey, byte[] hmacKey) {
this.encryptionKey = encryptionKey;
this.hmacKey = hmacKey;
}
public static CryptoKey from(char[] password) {
int totalSize = AESCypherTool.AES_KEY_LENGTH + Crypto.HMAC_KEY_LENGTH; // bits
byte[] keys = Crypto.pbkdf2(password, Crypto.DEFAULT_PBKDF2_SALT, 100000, totalSize);
byte[] encryptionKey = new byte[AESCypherTool.AES_KEY_LENGTH / 8]; // bits to bytes
byte[] hmacKey = new byte[Crypto.HMAC_KEY_LENGTH / 8]; // bits to bytes
Arr.split(keys, encryptionKey, hmacKey);
return new CryptoKey(encryptionKey, hmacKey);
}
}