java和js实现aes加密解密

超、凢脫俗 2022-07-28 06:15 233阅读 0赞

由于公司安全测试，要对重要信息进行加密传输，使得java、android、ios一致。

java代码

package gov.communitycloud.user.utils;
    
    import java.math.BigInteger;
    
    import javax.crypto.Cipher;
    import javax.crypto.KeyGenerator;
    import javax.crypto.spec.SecretKeySpec;
    
    import org.apache.commons.codec.binary.Base64;
    import org.apache.commons.lang3.StringUtils;
    
    import sun.misc.BASE64Decoder;
    
    /**
     * 编码工具类
     * 实现aes加密、解密
     */
    public class EncryptUtils {
    	
    	/**
    	 * 密钥
    	 */
    	private static final String KEY = "abcdefgabcdefg12";
    	
    	/**
    	 * 算法
    	 */
    	private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding";
    
    	public static void main(String[] args) throws Exception {
    		String content = "我爱你";
    		System.out.println("加密前：" + content);
    
    		System.out.println("加密密钥和解密密钥：" + KEY);
    
    		String encrypt = aesEncrypt(content, KEY);
    		System.out.println("加密后：" + encrypt);
    
    		String decrypt = aesDecrypt(encrypt, KEY);
    		System.out.println("解密后：" + decrypt);
    	}
    	
    	/**
    	 * aes解密
    	 * @param encrypt	内容
    	 * @return
    	 * @throws Exception
    	 */
    	public static String aesDecrypt(String encrypt) throws Exception {
    		return aesDecrypt(encrypt, KEY);
    	}
    	
    	/**
    	 * aes加密
    	 * @param content
    	 * @return
    	 * @throws Exception
    	 */
    	public static String aesEncrypt(String content) throws Exception {
    		return aesEncrypt(content, KEY);
    	}
    
    	/**
    	 * 将byte[]转为各种进制的字符串
    	 * @param bytes byte[]
    	 * @param radix 可以转换进制的范围，从Character.MIN_RADIX到Character.MAX_RADIX，超出范围后变为10进制
    	 * @return 转换后的字符串
    	 */
    	public static String binary(byte[] bytes, int radix){
    		return new BigInteger(1, bytes).toString(radix);// 这里的1代表正数
    	}
    
    	/**
    	 * base 64 encode
    	 * @param bytes 待编码的byte[]
    	 * @return 编码后的base 64 code
    	 */
    	public static String base64Encode(byte[] bytes){
    		return Base64.encodeBase64String(bytes);
    	}
    
    	/**
    	 * base 64 decode
    	 * @param base64Code 待解码的base 64 code
    	 * @return 解码后的byte[]
    	 * @throws Exception
    	 */
    	public static byte[] base64Decode(String base64Code) throws Exception{
    		return StringUtils.isEmpty(base64Code) ? null : new BASE64Decoder().decodeBuffer(base64Code);
    	}
    
    	
    	/**
    	 * AES加密
    	 * @param content 待加密的内容
    	 * @param encryptKey 加密密钥
    	 * @return 加密后的byte[]
    	 * @throws Exception
    	 */
    	public static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(128);
            Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
            cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), "AES"));
    
            return cipher.doFinal(content.getBytes("utf-8"));
        }
    
    
    	/**
    	 * AES加密为base 64 code
    	 * @param content 待加密的内容
    	 * @param encryptKey 加密密钥
    	 * @return 加密后的base 64 code
    	 * @throws Exception
    	 */
    	public static String aesEncrypt(String content, String encryptKey) throws Exception {
    		return base64Encode(aesEncryptToBytes(content, encryptKey));
    	}
    
    	/**
    	 * AES解密
    	 * @param encryptBytes 待解密的byte[]
    	 * @param decryptKey 解密密钥
    	 * @return 解密后的String
    	 * @throws Exception
    	 */
    	 public static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception {
    	        KeyGenerator kgen = KeyGenerator.getInstance("AES");
    	        kgen.init(128);
    
    	        Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
    	        cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES"));
    	        byte[] decryptBytes = cipher.doFinal(encryptBytes);
    
    	        return new String(decryptBytes);
    	    }
    
    
    	/**
    	 * 将base 64 code AES解密
    	 * @param encryptStr 待解密的base 64 code
    	 * @param decryptKey 解密密钥
    	 * @return 解密后的string
    	 * @throws Exception
    	 */
    	public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception {
    		return StringUtils.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey);
    	}
    
    }

js代码

<!DOCTYPE html>
    <html lang="en">
    <head>
    	<meta charset="UTF-8">
    	<title>aes测试</title>
    	<script type="text/javascript" src="aes.js"></script>
    	<script type="text/javascript" src="../components/mode-ecb.js"></script>
    </head>
    <body>
    	
    </body>
    
    <script type="text/javascript">
    
    	
    	function Encrypt(word){
    		 var key = CryptoJS.enc.Utf8.parse("abcdefgabcdefg12");	
    
    		 var srcs = CryptoJS.enc.Utf8.parse(word);
    		 var encrypted = CryptoJS.AES.encrypt(srcs, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
             return encrypted.toString();
    	}
    	function Decrypt(word){
    		 var key = CryptoJS.enc.Utf8.parse("abcdefgabcdefg12");	
    
    		 var decrypt = CryptoJS.AES.decrypt(word, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
    		 return CryptoJS.enc.Utf8.stringify(decrypt).toString();
    	}
    
    	alert(Encrypt("我爱你"));
    	alert(Decrypt(Encrypt("我爱你")))
    
    </script>
    </html>

注意点

1.  js中需要引入CryptoJS的架包，下载地址：[点击跳转地址][Link 1]
2.  使用aes时，js代码不要暴漏在外面，不然key会被拿到
3.  PKCS5Padding和PKCS7Padding的结果是一样

[Link 1]: http://download.csdn.net/detail/z83986976/9478038