AES ECB模式+BASE64加解密

Posted 2020-12-18 98kkkkkkkkkk

import org.apache.commons.codec.binary.Base64;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

/**
 * Created with IntelliJ IDEA. * Description:1、对明文密码进行加密验证
*             2、AES ECB模式+BASE64加密方式
*
 */
public class AesBase64Utils {

    private static final String AES_KEY = "123asdadawwad1yhgfdfesdcswerthyyuhsaAXCSESXCVFGD";

    // 加密
public static String Encrypt(String sSrc) throws Exception {
        byte[] bytes = getSecretKeySpecByte(AES_KEY);
        SecretKeySpec skeySpec =new SecretKeySpec(bytes,"AES");
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
        String encryStr = new String(new Base64().encode(encrypted));
        return encryStr;//此处使用BASE64做转码功能，同时能起到2次加密的作用。
}
    // 解密
public static String Decrypt(String sSrc) {
        try {
            byte[] bytes = getSecretKeySpecByte(AES_KEY);
            SecretKeySpec skeySpec =new SecretKeySpec(bytes,"AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);
            byte[] encrypted1 = (byte[])new Base64().decode(sSrc);//先用base64解密
byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original,"utf-8");
            return originalString;
        } catch (Exception ex) {
           return null;
        }
    }

    /**
     * 如果sKey长度小于等于16，则补零；
*如果sKey长度大于16，则超过16的部分字节，返回去与原来的字节进行异或操作。
* @param sKey
* @return
*/
private static byte[] getSecretKeySpecByte(String sKey){
        byte[] bytes = new byte[16];
        byte[] keyBytes = sKey.getBytes();
        for (int i = 0; i < sKey.length(); i++) {
            bytes[i % 16]  = (byte) (bytes[i % 16] ^ keyBytes[i]);
        }
        return  bytes;
    }

    public static void main(String[] args) {
        try {
            String encryptPw = AesBase64Utils.Encrypt("123645");
            System.out.println("加密数据========"+encryptPw);
            String decryptPw = AesBase64Utils.Decrypt(encryptPw);
            System.out.println("解密数据========"+decryptPw);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

 推荐：sitemap