114 lines
4.5 KiB
Plaintext
114 lines
4.5 KiB
Plaintext
package com.nationalelectric.greenH5.utils;
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import java.util.Locale;
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import java.util.Properties;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import org.apache.commons.lang.StringUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import sun.misc.BASE64Decoder;
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import sun.misc.BASE64Encoder;
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public class AESUtil {
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private static final Log log = LogFactory.getLog(AESUtil.class);
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// 加密
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public static String Encrypt(String sSrc, String sKey) throws Exception {
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return Encrypt(sSrc,sKey,"1234567890123456"); //默认的加密向量1234567890123456
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}
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/**
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* @param sSrc 加密data
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* @param sKey 加密密钥
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* @param ivStr 加密向量
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* @Description:加密操作
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*/
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public static String Encrypt(String sSrc, String sKey,String ivStr) throws Exception {
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if (sKey == null) {
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log.info("Key为空null");
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return null;
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}
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// 判断Key是否为16位
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if (sKey.length() != 16) {
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log.info("Key长度不是16位");
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return null;
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}
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byte[] raw = sKey.getBytes();
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SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");//"算法/模式/补码方式" 密码器
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IvParameterSpec iv = new IvParameterSpec(ivStr.getBytes());//使用CBC模式，需要一个向量iv，可增加加密算法的强度1234567890123456
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cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); //初始化
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// sSrc= escapeChar(sSrc);
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byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8")); //执行最终的加密操作
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String str=new BASE64Encoder().encode(encrypted); ////此处使用BASE64做转码功能，同时能起到2次加密的作用。
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//获取操作系统的类型（目前默认无mac操作系统）
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Properties prop = System.getProperties();
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String os = prop.getProperty("os.name");
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// log.info("操作系统类型："+os);
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if (os!=null && StringUtils.isNotEmpty(os)) {
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if(os.toLowerCase(Locale.ENGLISH).startsWith("win")){ //windows 系统
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str=str.replaceAll("\r\n", ""); //windows 换行\r\n; linux 换行\n ;mac 换行 \r
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}else{ //linux 系统
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str=str.replaceAll("\n", ""); //windows 换行\r\n; linux 换行\n ;mac 换行 \r
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}
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}
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return str;//new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码功能，同时能起到2次加密的作用。
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}
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// 解密
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public static String Decrypt(String sSrc, String sKey) throws Exception {
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return Decrypt(sSrc,sKey,"1234567890123456");
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}
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// 解密
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public static String Decrypt(String sSrc, String sKey,String ivStr) throws Exception {
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try {
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// 判断Key是否正确
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if (sKey == null) {
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log.info("Key为空null");
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return null;
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}
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// 判断Key是否为16位
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if (sKey.length() != 16) {
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log.info("Key长度不是16位");
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return null;
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}
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byte[] raw = sKey.getBytes("UTF-8");
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SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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IvParameterSpec iv = new IvParameterSpec(ivStr.getBytes("utf-8"));
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cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
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byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密
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try {
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byte[] original = cipher.doFinal(encrypted1);
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String originalString = new String(original,"utf-8");
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originalString= unEscapeChar(originalString);
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return originalString;
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} catch (Exception e) {
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//log.error(printErr(e));
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return sSrc;
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}
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} catch (Exception ex) {
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//log.error(printErr(ex));
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return sSrc;
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}
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}
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private static String unEscapeChar(String beforeDecryptString ){
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String unEscapeStr=beforeDecryptString;
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unEscapeStr=unEscapeStr.replaceAll( "<","<");
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unEscapeStr=unEscapeStr.replaceAll( ">",">");
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unEscapeStr=unEscapeStr.replaceAll( "&","&");
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unEscapeStr=unEscapeStr.replaceAll( ""","\"");
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unEscapeStr=unEscapeStr.replaceAll( "©","©");
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unEscapeStr=unEscapeStr.replaceAll( " "," ");
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return unEscapeStr;
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}} |