Java Key Pair Create generateKey(String algorithm, int keySize)

Description

Generate a SecretKey for the given symmetric algorithm and keysize Example: CipherUtils.generateKeyPair("AES", 128)

License

Apache License

Declaration

public static SecretKey generateKey(String algorithm, int keySize) 

Method Source Code

//package com.java2s;
/**/*from w ww  .j ava  2 s . co  m*/
 * Licensed to the Austrian Association for Software Tool Integration (AASTI)
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. The AASTI licenses this file to you 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.
 */

import java.security.NoSuchAlgorithmException;

import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;

public class Main {
    /**
     * Generate a {@link SecretKey} for the given symmetric algorithm and keysize
     *
     * Example: CipherUtils.generateKeyPair("AES", 128)
     */
    public static SecretKey generateKey(String algorithm, int keySize) {
        KeyGenerator secretKeyGenerator;
        try {
            secretKeyGenerator = KeyGenerator.getInstance(algorithm);
        } catch (NoSuchAlgorithmException e) {
            throw new IllegalArgumentException(e);
        }
        secretKeyGenerator.init(keySize);
        return secretKeyGenerator.generateKey();
    }
}

Related

1. generateKey(char[] password)
2. generateKey(final SecureRandom srand)
3. generateKey(final String password, final byte salt[])
4. generateKey(SecureRandom sr, int size)
5. generateKey(String algom, int keylength)
6. generateKey(String algorithm, int size)
7. generateKey(String cipherAlgorithm)
8. generateKey(String keyPhrase)
9. generateKey(String password)