Android SHA256 Hash Create cipher(int mode, byte[] data, byte[] secret)

Description

cipher

License

Apache License

Declaration

public static byte[] cipher(int mode, byte[] data, byte[] secret)
            throws NoSuchAlgorithmException, NoSuchPaddingException,
            InvalidKeyException, IllegalBlockSizeException,
            BadPaddingException 

Method Source Code

//package com.java2s;
/*/*www .  j  a  va2 s. c om*/
 * ConnectBot: simple, powerful, open-source SSH client for Android
 * Copyright 2007 Kenny Root, Jeffrey Sharkey
 *
 * 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 java.security.InvalidKeyException;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;

import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;

import javax.crypto.spec.SecretKeySpec;

public class Main {
    public static byte[] cipher(int mode, byte[] data, byte[] secret)
            throws NoSuchAlgorithmException, NoSuchPaddingException,
            InvalidKeyException, IllegalBlockSizeException,
            BadPaddingException {
        SecretKeySpec secretKeySpec = new SecretKeySpec(sha256(secret),
                "AES");
        Cipher c = Cipher.getInstance("AES");
        c.init(mode, secretKeySpec);
        return c.doFinal(data);
    }

    public static byte[] sha256(byte[] data)
            throws NoSuchAlgorithmException {
        return MessageDigest.getInstance("SHA-256").digest(data);
    }
}

Related

1. doubleSha256(byte[] data, int offset, int length)
2. doubleSha256TwoBuffers(byte[] data1, byte[] data2)
3. SHA256(String text)
4. getHmacSHA256(String key, String input)
5. sha256(byte[] data)