Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2011 the original author or authors.
 *
 * 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.
 */

import javax.crypto.Cipher;

import javax.crypto.SecretKey;

import javax.crypto.spec.PBEParameterSpec;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;

import java.security.spec.AlgorithmParameterSpec;

public class Main {
    /**
     * Initializes the Cipher for use.
     */
    public static void initCipher(Cipher cipher, int mode, SecretKey secretKey) {
        initCipher(cipher, mode, secretKey, null);
    }

    /**
     * Initializes the Cipher for use.
     */
    public static void initCipher(Cipher cipher, int mode, SecretKey secretKey, byte[] salt, int iterationCount) {
        initCipher(cipher, mode, secretKey, new PBEParameterSpec(salt, iterationCount));
    }

    /**
     * Initializes the Cipher for use.
     */
    public static void initCipher(Cipher cipher, int mode, SecretKey secretKey,
            AlgorithmParameterSpec parameterSpec) {
        try {
            if (parameterSpec != null) {
                cipher.init(mode, secretKey, parameterSpec);
            } else {
                cipher.init(mode, secretKey);
            }
        } catch (InvalidKeyException e) {
            throw new IllegalArgumentException("Unable to initialize due to invalid secret key", e);
        } catch (InvalidAlgorithmParameterException e) {
            throw new IllegalStateException("Unable to initialize due to invalid decryption parameter spec", e);
        }
    }
}