reference to :

加密和解密要用同一個key

AES：

import java.util.UUID;import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;public class DES {    private static final byte[] iv = { 1, 2, 3, 4, 5, 6, 7, 8 };    /**     *      * @param encryptString 加密内容     * @param encryptKey 加密key     * @return     * @throws Exception     */    public static String encryptDES(String encryptString, String encryptKey)            throws Exception {        IvParameterSpec zeroIv = new IvParameterSpec(iv);        SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES");        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");        cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv);        String tmp = Base64.encodeBytes(encryptString.getBytes("UTF-8"));        byte[] encryptedData = cipher.doFinal(tmp.getBytes("UTF-8"));        return Base64.encodeBytes(encryptedData);    }        /**     *      * @param decryptString 解密内容     * @param encryptKey 解密key     * @return     * @throws Exception     */    public static String decryptDES(String decryptString,String encryptKey)throws Exception {        IvParameterSpec zeroIv = new IvParameterSpec(iv);        SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES");        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");        cipher.init(Cipher.DECRYPT_MODE, key, zeroIv);        byte[] decryptBytes = cipher.doFinal(Base64.decode(decryptString));        String tmp = new String(decryptBytes,"UTF-8");        return new String(Base64.decode(tmp));    }        public static String getKey(){        String p = UUID.randomUUID().toString();        return SHA1.Encrypt(p).substring(0, 8);    }    }

Test：

public static void testDES() throws Exception{            String content = "AES加密";        String key = DES.getKey();        String a = DES.encryptDES(content, key);        System.out.println("DES Encrypt..." + a);        String b = DES.decryptDES(a, key);        System.out.println("DES decrypt..." + b);}

Console：

DES Encrypt...93koM7boCXsNrH91Y0MDJA==DES decrypt...AES加密