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About jQuery implementing base64 front-end encryption and decryption function
About jQuery implementing base64 front-end encryption and decryption function
Dec 29, 2017 am 11:48 AM
This article mainly introduces jQuery's implementation of base64 front-end encryption and decryption functions. It analyzes the implementation method of jquery.base64.js to implement front-end base64 encryption and decryption functions in the form of examples, and gives a comparison of operation examples of java's implementation of back-end base64 encryption and decryption. To verify the encryption effect, friends who need it can refer to it. I hope it can help everyone.
Regarding encryption, many people think of encodeURI and escape. This is useful for encrypting URLs, especially URLs with Chinese parameters.
If you just want to do encryption and decryption, similar to Java's DES, jQuery on the Internet has jquery.base64.js.
(For md5 encryption of js, you can use jquery.md5.js. If you are interested, you can find it and test it).
The following is the test:
<html>
<head>
??<title></title>
??<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
??<script language="javascript" src="jquery-1.7.1.js"></script>
??<script language="javascript" src="jquery.base64.js"></script>
</head>
<body>
<input id="path" name="path" type="hidden" value="haha"></input>
<input id="putcardno01" name="putcardno01" type="text" size="65" value=""></input>
<br>
<input onclick="subfunc();" class="btn1" value="提交加密" type="button"></input>
<br>
加密后：<input id="putcardno02" name="putcardno02" type="text" size="65" value=""></input>
<br>
<input onclick="subfunc02();" class="btn1" value="提交解密" type="button"></input>
<br>
<br>
<hr>
<input onclick="subfunc03();" class="btn1" value="提交N次加密" type="button"></input>
<br>
加密后：<input id="putcardno03" name="putcardno03" type="text" size="65" value=""></input>
<br>
<input onclick="subfunc04();" class="btn1" value="提交N次解密" type="button"></input>
<br>
<br>
<input onclick="clearrr();" class="btn1" value="清除" type="button"></input>
<br>
<textarea id='txt' cols="75" rows="19"></textarea>
</body>
<script language="javascript">
var?path=document.getElementById("path").value;
function?app(info){
??$("#txt").val($("#txt").val()+'\n'+info);
}
function?subfunc(){
?var?put1=$.trim($("#putcardno01").val());
?//?var?estxt=$.base64.encode(put1);
?//var?estxt=$.base64.btoa(put1);
?var?estxt=encodeBase64(put1);
?$("#putcardno02").val(estxt);
?app("加密后["+estxt+"]");
}
function?subfunc02(){
?var?put1=$.trim($("#putcardno02").val());
?//var?estxt=$.base64.decode(put1);
?//var?estxt=$.base64.atob(put1);
?var?estxt=decodeBase64(put1);
?app("解密后["+estxt+"]");
}
//////////////////////////////////////////
var?numTimes=5;
function?subfunc03(){
?var?put1=$.trim($("#putcardno01").val());
?//?var?estxt=$.base64.encode(put1);
?//var?estxt=$.base64.btoa(put1);
?//estxt=$.base64.btoa(estxt);
?estxt=encodeBase64(put1,numTimes);
?$("#putcardno03").val(estxt);
?app(numTimes+"次加密后["+estxt+"]");
}
function?subfunc04(){
?var?put1=$.trim($("#putcardno03").val());
?//var?estxt=$.base64.decode(put1);
?//var?estxt=$.base64.atob(put1);
?//estxt=$.base64.atob(estxt);
?estxt=decodeBase64(put1,numTimes);
?app(numTimes+"次解密后["+estxt+"]");
}
function?clearrr(){
?$("#putcardno02").val("");
?$("#putcardno03").val("");
?$("#putcardno04").val("");
?$("#txt").val("");
}
//加密方法。沒(méi)有過(guò)濾首尾空格，即沒(méi)有trim.
//加密可以加密N次，對(duì)應(yīng)解密N次就可以獲取明文
function?encodeBase64(mingwen,times){
??var?code="";
??var?num=1;
??if(typeof?times=='undefined'||times==null||times==""){
????num=1;
??}else{
????var?vt=times+"";
????num=parseInt(vt);
??}
??if(typeof?mingwen=='undefined'||mingwen==null||mingwen==""){
??}else{
????$.base64.utf8encode?=?true;
????code=mingwen;
????for(var?i=0;i<num;i++){
??????code=$.base64.btoa(code);
????}
??}
??return?code;
}
//解密方法。沒(méi)有過(guò)濾首尾空格，即沒(méi)有trim
//加密可以加密N次，對(duì)應(yīng)解密N次就可以獲取明文
function?decodeBase64(mi,times){
??var?mingwen="";
??var?num=1;
??if(typeof?times=='undefined'||times==null||times==""){
????num=1;
??}else{
????var?vt=times+"";
????num=parseInt(vt);
??}
??if(typeof?mi=='undefined'||mi==null||mi==""){
??}else{
????$.base64.utf8encode?=?true;
????mingwen=mi;
????for(var?i=0;i<num;i++){
??????mingwen=$.base64.atob(mingwen);
????}
??}
??return?mingwen;
}
/*
測(cè)試
輸入?suolong2014version
加密后[c3VvbG9uZzIwMTR2ZXJzaW9u]
解密后[suolong2014version]
5次加密后[VjFod1QxWXlVblJUYTJoUVYwWmFhRnBYZEhOTk1WSlhWV3hPVG1KSVFscFZNalYzWVVaYU5tSkVSVDA9]
5次解密后[suolong2014version]
*/
</script>
Is the encryption and decryption in the background the same as in the front desk?
Let’s test it:
package?com.code;
import?sun.misc.BASE64Decoder;
import?sun.misc.BASE64Encoder;
/**
?*
?*?Base64加密--解密
?*
?*?@author?lushuaiyin
?*
?*/
public?class?Base64Util?{
??/**
???*?@param?args
???*/
??public?static?void?main(String[]?args)?{
????//?TODO?Auto-generated?method?stub
????String?str="suolong2014version";
????System.out.println("測(cè)試明文["+str+"]");
????String?basecode?=Base64Util.encodeBase64(str);
????System.out.println("加密后["+basecode+"]");
????if(basecode!=null){
??????String?res?=Base64Util.decodeBase64(basecode);
??????System.out.println("解密后["+res+"]");
????}
????/////////////////////////////////////////
????System.out.println("");
????System.out.println("N次加密測(cè)試--------");
????String?basecodeN=Base64Util.encodeBase64(str,?2);
????String?resN=Base64Util.decodeBase64(basecodeN,?2);
????String?basecodeN3=Base64Util.encodeBase64(str,?5);
????String?resN3=Base64Util.decodeBase64(basecodeN3,?5);
??}
??//提供加密N次
??public?static?String?encodeBase64(String?mingwen,int?times){
????int?num=(times<=0)?1:times;
????String?code="";
????if(mingwen==null||mingwen.equals("")){
????}else{
??????code=mingwen;
??????for(int?i=0;i<num;i++){
????????code=encodeBase64(code);
??????}
??????System.out.println("加密"+num+"次后["+code+"]");
????}
????return?code;
??}
??//對(duì)應(yīng)提供解密N次
??public?static?String?decodeBase64(String?mi,int?times){
????int?num=(times<=0)?1:times;
????String?mingwen="";
????if(mi==null||mi.equals("")){
????}else{
??????mingwen=mi;
??????for(int?i=0;i<num;i++){
????????mingwen=decodeBase64(mingwen);
??????}
??????System.out.println("解密"+num+"次后["+mingwen+"]");
????}
????return?mingwen;
??}
??///////////////////////////////////////////////////////////////////
??public?static?String?encodeBase64(String?mingwen){
????String?code="";
????if(mingwen==null||mingwen.equals("")){
????}else{
??????BASE64Encoder?encoder?=?new?BASE64Encoder();
??????try?{
????????code=encoder.encode(mingwen.getBytes());
??????}?catch?(Exception?e)?{
????????e.printStackTrace();
??????}
//?????System.out.println("加密后["+code+"]");
????}
????return?code;
??}
??public?static?String?decodeBase64(String?mi){
????String?mingwen="";
????if(mi==null||mi.equals("")){
????}else{
??????BASE64Decoder?decoder?=?new?BASE64Decoder();
??????try?{
????????byte[]?by?=?decoder.decodeBuffer(mi);
????????mingwen?=?new?String(by);
??????}?catch?(Exception?e)?{
????????e.printStackTrace();
??????}
//?????System.out.println("解密后["+mingwen+"]");
????}
????return?mingwen;
??}
}
/*
打?。?
測(cè)試明文[suolong2014version]
加密后[c3VvbG9uZzIwMTR2ZXJzaW9u]
解密后[suolong2014version]
N次加密測(cè)試--------
加密2次后[YzNWdmJHOXVaekl3TVRSMlpYSnphVzl1]
解密2次后[suolong2014version]
加密5次后[VjFod1QxWXlVblJUYTJoUVYwWmFhRnBYZEhOTk1WSlhWV3hPVG1KSVFscFZNalYzWVVaYU5tSkVS
VDA9]
解密5次后[suolong2014version]
*/
From the results, jquery.base64.js encryption and decryption are the same as java’s base64 encryption and decryption.
Related recommendations:
How does PHP use a custom key to encrypt and decrypt data?
Java encryption and decryption and Digital signature complete code example
php data encryption related introduction
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