AES加密

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最新推荐文章于 2024-05-11 14:40:23 发布

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分类专栏： java

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博客展示了AES加解密算法的Java代码，涉及AES 128位CBC算法，引入了相关加密类和日志记录类，还提到HTML部分字符的转义字符。

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package com.arvato.utils.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;

/*******************************************************************************

AES加解密算法
2016.07.22
@author 王学明
aes 128位 cbc 算法

public class AESUtil {
private static final Logger LOGGER = LoggerFactory.getLogger(AESUtil.class);

// 加密
public static String encrypt(final String sSrc, final String sKey, final String ivStr) {
    if (sKey == null) {
        LOGGER.info("Key为空null");
        return null;
    }
    // 判断Key是否为16位
    if (sKey.length() != 16) {
        LOGGER.info("Key长度不是16位");
        return null;
    }
    final byte[] raw = sKey.getBytes();
    final SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
    try {
        byte[] encrypted = new byte[0];

        final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        final IvParameterSpec iv = new IvParameterSpec(ivStr.getBytes());
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        encrypted = cipher.doFinal(sSrc.getBytes());
        return new BASE64Encoder().encode(encrypted)
                .replaceAll("\r\n", "")
                .replaceAll("\n", "");

    } catch (final Exception e) {
        LOGGER.error("encrypt is error", e);
        return null;
    }

}


// 解密
public static String decrypt(final String sSrc, final String sKey, final String ivStr) {
    try {
        // 判断Key是否正确
        if (sKey == null) {
            LOGGER.info("Key为空null");
            return null;
        }
        // 判断Key是否为16位
        if (sKey.length() != 16) {
            LOGGER.info("Key长度不是16位");
            return null;
        }
        final byte[] raw = sKey.getBytes(StandardCharsets.UTF_8);
        final SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
        final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        final IvParameterSpec iv = new IvParameterSpec(ivStr.getBytes());
        cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
        final byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);

        final byte[] original = cipher.doFinal(encrypted1);
        return new String(original);

    } catch (final Exception ex) {
        LOGGER.error("decrypt is error", ex);
        return null;
    }
}


public static void main(final String[] args) {
    //String str = "{\"code\":\"1710121851401851\"}";
    String str = "{\"distributeCode\":\"0703111941451358\",\"distributeTarget\":\"18141914966\",\"num\":\"2\"}";
    String str1 = "{\"phone:\"15620732549\",ip:\"111.200.59.42\"}";
    String encrypt = encrypt(str1, "1234567890abcdef", "1234567890abcdef");
    System.out.println("加密:" + encrypt);
    //推送设备状态变化信息
    System.out.println("解密 = [" + decrypt("+vMJusBjgmSnXGVlrI5Q1IxDJJAtzcPN2RurzSkQTjrgqgSnBAx3numZe7hvmMqQYfHvuGXM5nXbN5Uwel1BsSZhJ2MrwJKAcdkJjD28ovpz2fDnINbVk0PZujWlxrGFePGV0QdOp8EckrxztpcZ9KTDxtBm8pdqKWGM6l76qVXRIMCHlQyEUHSlZmTwll1XviJ9ufrNssgl7Xb/hsIDoCWKp+T8NMNwWrwlJDHHW/byb7w6JyRkWCw/1CC7GCsrX49kJoyHKU2rRPNPJfVvew==", "1234567890abcdef", "1234567890abcdef") + "]");
    System.out.println("解密 = [" + decrypt(encrypt, "1234567890abcdef", "1234567890abcdef") + "]");

}

}