Java AES Encrypt aesEncrypt(String content, String encryptKey)

Description

aes Encrypt

License

Open Source License

Declaration

public static String aesEncrypt(String content, String encryptKey) 

Method Source Code

//package com.java2s;
/*//from ww  w. j  av a2  s  .c  o  m
 * Project Name: zc-collect-common
 * File Name: EncryptUtil.java
 * Class Name: EncryptUtil
 *
 * Copyright 2014 Hengtian Software Inc
 *
 * Licensed under the Hengtiansoft
 *
 * http://www.hengtiansoft.com
 *
 * 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.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.spec.SecretKeySpec;

public class Main {

    public static String aesEncrypt(String content, String encryptKey) {
        return parseByte2HexStr(aesEncryptToBytes(content, encryptKey));
    }

    public static String parseByte2HexStr(byte buf[]) {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < buf.length; i++) {
            String hex = Integer.toHexString(buf[i] & 0xFF);
            if (hex.length() == 1) {
                hex = '0' + hex;
            }
            sb.append(hex.toUpperCase());
        }
        return sb.toString();
    }

    public static byte[] aesEncryptToBytes(String content, String encryptKey) {
        KeyGenerator kgen;
        try {
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            random.setSeed(encryptKey.getBytes());
            kgen = KeyGenerator.getInstance("AES");
            kgen.init(128, random);
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES"));
            return cipher.doFinal(content.getBytes("utf-8"));
        } catch (Exception e) {
        }
        return null;
    }
}

Related

1. aesEncrypt(byte[] source, Key key)
2. aesEncrypt(String content, String key)
3. aesEncryptBytes(byte[] pBytes, SecretKeySpec pKeySpec, IvParameterSpec ivParameterSpec)
4. aesEncryptToBytes(String content, String encryptKey)