两种加密算法的结合使用是为了更加安全,使得真正的密码只用用户自己知道,并且外人河南破解。废话不多说,我这里直接写了AES加密算法和BASE64加密算法的工具类,可以直接调用

一. BASE64加密工具类

package com.AES;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.IOException;
/*** Created by ${ligh} on 2019/2/25 下午2:17*/
public class BaseUtil {/*** 编码** @param bstr* @return String*/public static String encode(byte[] bstr) {return new BASE64Encoder().encode(bstr);}/*** 解码** @param str* @return string*/public static byte[] decode(String str) {byte[] bt = null;try {BASE64Decoder decoder = new BASE64Decoder();bt = decoder.decodeBuffer(str);} catch (IOException e) {e.printStackTrace();}return bt;}
}

二. AES加密算法工具类

package com.AES;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.Key;
import java.security.MessageDigest;
/*** Created by ${ligh} on 2019/02/27 下午4:01*/
public class AESUtil {/*** 預設的Initialization Vector，為16 Bits的0*/private static final IvParameterSpec DEFAULT_IV = new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0});/*** 加密演算法使用AES*/private static final String ALGORITHM = "AES";/*** AES使用CBC模式與PKCS5Padding*/private static final String TRANSFORMATION = "AES/CBC/PKCS5Padding";/*** 取得AES加解密的密鑰*/private Key key;/*** AES CBC模式使用的Initialization Vector*/private IvParameterSpec iv;/*** Cipher 物件*/private Cipher cipher;/*** 建構子，使用128 Bits的AES密鑰(計算任意長度密鑰的MD5)和預設IV** @param key 傳入任意長度的AES密鑰*/public AESUtil(final String key) {this(key, 128);}/*** 建構子，使用128 Bits或是256 Bits的AES密鑰(計算任意長度密鑰的MD5或是SHA256)和預設IV** @param key 傳入任意長度的AES密鑰* @param bit 傳入AES密鑰長度，數值可以是128、256 (Bits)*/public AESUtil(final String key, final int bit) {this(key, bit, null);}/*** 建構子，使用128 Bits或是256 Bits的AES密鑰(計算任意長度密鑰的MD5或是SHA256)，用MD5計算IV值** @param key 傳入任意長度的AES密鑰* @param bit 傳入AES密鑰長度，數值可以是128、256 (Bits)* @param iv 傳入任意長度的IV字串*/public AESUtil(final String key, final int bit, final String iv) {if (bit == 256) {this.key = new SecretKeySpec(getHash("SHA-256", key), ALGORITHM);} else {this.key = new SecretKeySpec(getHash("MD5", key), ALGORITHM);}if (iv != null) {this.iv = new IvParameterSpec(getHash("MD5", iv));} else {this.iv = DEFAULT_IV;}init();}/*** 取得字串的雜湊值** @param algorithm 傳入雜驟演算法* @param text 傳入要雜湊的字串* @return 傳回雜湊後資料內容*/private static byte[] getHash(final String algorithm, final String text) {try {return getHash(algorithm, text.getBytes("UTF-8"));} catch (final Exception ex) {throw new RuntimeException(ex.getMessage());}}/*** 取得資料的雜湊值** @param algorithm 傳入雜驟演算法* @param data 傳入要雜湊的資料* @return 傳回雜湊後資料內容*/private static byte[] getHash(final String algorithm, final byte[] data) {try {final MessageDigest digest = MessageDigest.getInstance(algorithm);digest.update(data);return digest.digest();} catch (final Exception ex) {throw new RuntimeException(ex.getMessage());}}/*** 初始化*/private void init() {try {cipher = Cipher.getInstance(TRANSFORMATION);} catch (final Exception ex) {throw new RuntimeException(ex.getMessage());}}/*** 加密文字** @param str 傳入要加密的文字* @return 傳回加密後的文字*/public String encrypt(final String str) {try {return encrypt(str.getBytes("UTF-8"));} catch (final Exception ex) {throw new RuntimeException(ex.getMessage());}}/*** 加密資料** @param data 傳入要加密的資料* @return 傳回加密後的資料*/public String encrypt(final byte[] data) {try {cipher.init(Cipher.ENCRYPT_MODE, key, iv);final byte[] encryptData = cipher.doFinal(data);return BaseUtil.encode(encryptData);} catch (final Exception ex) {throw new RuntimeException(ex.getMessage());}}/*** 解密文字** @param str 傳入要解密的文字* @return 傳回解密後的文字*/public String decrypt(final String str) {try {return decrypt(BaseUtil.decode(str));} catch (final Exception ex) {throw new RuntimeException(ex.getMessage());}}/*** 解密文字** @param data 傳入要解密的資料* @return 傳回解密後的文字*/public String decrypt(final byte[] data) {try {cipher.init(Cipher.DECRYPT_MODE, key, iv);final byte[] decryptData = cipher.doFinal(data);return new String(decryptData, "UTF-8");} catch (final Exception ex) {throw new RuntimeException(ex.getMessage());}}
}

三. 创建测试

package com.AES;
/*** Created by ${ligh} on 2019/2/27 下午4:46*/
public class TestAesBase {public static void main(String[] args) {String key = "ligh";String phone = "123456";System.out.println("加密前的字符串: "+phone);AESUtil aesUtil = new AESUtil(key);String encrypt = aesUtil.encrypt(phone);System.out.println("加密后的字符串: "+ encrypt);String decrypt = aesUtil.decrypt(encrypt);System.out.println("解密之后的字符串: "+decrypt);}
}

显示结果:

四. 总结

注意:
    构造方法中传入的参数一定要在加密和解密前统一,不然会出现解密失败的现象