package com.changhong.epc.rely.api.tool;
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import com.changhong.cacsdk.api.MainApi;
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import com.changhong.cacsdk.entity.CryptEntity;
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import com.changhong.cacsdk.util.Base64Utils;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.codec.binary.Base64;
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import sun.misc.BASE64Decoder;
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import sun.misc.BASE64Encoder;
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import javax.crypto.*;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import java.io.UnsupportedEncodingException;
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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import java.security.SecureRandom;
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/*
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* AES对称加密和解密
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*/
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@Slf4j
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public class CscAesUtils {
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private static final String KEY_ALGORITHM = "AES";
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private static final String DEFAULT_CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";//默认的加密算法
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/**
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* AES 加密操作
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*
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* @param content 待加密内容
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* @param password 加密密码
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* @return 返回Base64转码后的加密数据
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*/
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public static String encrypt(String content, String password) {
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try {
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Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);// 创建密码器
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byte[] byteContent = content.getBytes("utf-8");
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cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(password));// 初始化为加密模式的密码器
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byte[] result = cipher.doFinal(byteContent);// 加密
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return Base64.encodeBase64String(result);//通过Base64转码返回
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} catch (Exception ex) {
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log.error("AES加密失败：{}", ex.getMessage());
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}
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return null;
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}
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/**
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* AES 解密操作
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*
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* @param content
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* @param password
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* @return
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*/
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public static String decrypt(String content, String password) {
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try {
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//实例化
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Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);
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//使用密钥初始化，设置为解密模式
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cipher.init(Cipher.DECRYPT_MODE, getSecretKey(password));
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//执行操作
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byte[] result = cipher.doFinal(Base64.decodeBase64(content));
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return new String(result, "utf-8");
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} catch (Exception ex) {
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log.error("AES解密失败：{}", ex.getMessage());
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}
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return null;
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}
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/**
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* 生成加密秘钥
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*
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* @return
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*/
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private static SecretKeySpec getSecretKey(final String key) {
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//返回生成指定算法密钥生成器的 KeyGenerator 对象
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KeyGenerator kg = null;
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try {
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SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
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random.setSeed(key.getBytes());
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kg = KeyGenerator.getInstance(KEY_ALGORITHM);
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//AES 要求密钥长度为 128
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kg.init(128, random);
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//生成一个密钥
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SecretKey secretKey = kg.generateKey();
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return new SecretKeySpec(secretKey.getEncoded(), KEY_ALGORITHM);// 转换为AES专用密钥
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} catch (NoSuchAlgorithmException ex) {
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log.error("AES生成秘钥失败：" + ex.getMessage());
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}
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return null;
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}
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public static void main(String[] args) {
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String Code = "3141bf6b126f4f16";
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String key = "0123456789ABCDEF";
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String codE;
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codE = CscAesUtils.encrypt(Code, key);
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System.out.println("原文：" + Code);
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System.out.println("密钥：" + key);
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System.out.println("密文：" + codE);
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System.out.println("解密：" + CscAesUtils.decrypt(codE, key));
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System.out.println(
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CscAesUtils.decrypt("foHgkbudC1IdOvqig+qbpG5lZuAGS1l1mX1tJUlqJcY=", key)
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);
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}
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}
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