AES加密解密的java工具类

百度百科一下，AES：高级加密标准（英语：Advanced Encryption Standard，缩写：AES），在密码学中又称Rijndael加密法，是美国联邦政府采用的一种区块加密标准。这个标准用来替代原先的DES，已经被多方分析且广为全世界所使用。经过五年的甄选流程，高级加密标准由美国国家标准与技术研究院（NIST）于2001年11月26日发布于FIPS PUB 197，并在2002年5月26日成为有效的标准。2006年，高级加密标准已然成为对称密钥加密中最流行的算法之一。

AESCipher.java代码：

import java.security.InvalidAlgorithmParameterException;import java.security.InvalidKeyException;import java.security.NoSuchAlgorithmException;import javax.crypto.BadPaddingException;import javax.crypto.Cipher;import javax.crypto.IllegalBlockSizeException;import javax.crypto.NoSuchPaddingException;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;

import java.io.UnsupportedEncodingException;import org.apache.commons.codec.binary.Base64;

public class AESCipher {

    private static final String IV_STRING = "A-16-Byte-String";    private static final String charset = "UTF-8";

    /**     * 加密     * @param content     * @param key     * @return     * @throws InvalidKeyException     * @throws NoSuchAlgorithmException     * @throws NoSuchPaddingException     * @throws InvalidAlgorithmParameterException     * @throws IllegalBlockSizeException     * @throws BadPaddingException     * @throws UnsupportedEncodingException     */    public static String aesEncryptString(String content, String key) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException {        byte[] contentBytes = content.getBytes(charset);        byte[] keyBytes = key.getBytes(charset);        byte[] encryptedBytes = aesEncryptBytes(contentBytes, keyBytes);        //Encoder encoder = Base64.getEncoder();        return Base64.encodeBase64(encryptedBytes).toString();    }

    /**     * 解密     * @param content     * @param key     * @return     * @throws InvalidKeyException     * @throws NoSuchAlgorithmException     * @throws NoSuchPaddingException     * @throws InvalidAlgorithmParameterException     * @throws IllegalBlockSizeException     * @throws BadPaddingException     * @throws UnsupportedEncodingException     */    public static String aesDecryptString(String content, String key) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException {        byte[] encryptedBytes = Base64.decodeBase64(content.getBytes());        byte[] keyBytes = key.getBytes(charset);        byte[] decryptedBytes = aesDecryptBytes(encryptedBytes, keyBytes);        return new String(decryptedBytes, charset);    }

    public static byte[] aesEncryptBytes(byte[] contentBytes, byte[] keyBytes) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException {        return cipherOperation(contentBytes, keyBytes, Cipher.ENCRYPT_MODE);    }

    public static byte[] aesDecryptBytes(byte[] contentBytes, byte[] keyBytes) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException {        return cipherOperation(contentBytes, keyBytes, Cipher.DECRYPT_MODE);    }

    private static byte[] cipherOperation(byte[] contentBytes, byte[] keyBytes, int mode) throws UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {        SecretKeySpec secretKey = new SecretKeySpec(keyBytes, "AES");

        byte[] initParam = IV_STRING.getBytes(charset);        IvParameterSpec ivParameterSpec = new IvParameterSpec(initParam);

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");        cipher.init(mode, secretKey, ivParameterSpec);

        return cipher.doFinal(contentBytes);    }

}

调用，比如解密方法：

String deCodeStr = AESCipher.aesDecryptString(enCodeStr, secretKey);   //secretKey是加密时候的秘钥，相同才能解密

原文地址：https://www.cnblogs.com/tuituji27/p/11304014.html