JS：存储在数据库（SJCL）后无法解密(JS: Decryption not possible after storing in database (SJCL))

 我正在尝试使用Stanford Javascript加密库（SJCL）并希望加密并稍后解密字符串。 
 
 以下代码工作正常： 
 
var pw = "password";
var message = "message";
var encrypted = sjcl.encrypt(pw, message);
alert(encrypted);

var decrypted = sjcl.decrypt(pw, encrypted)
alert(decrypted);
 
 第一个警报显示加密数据，第二个警报显示“消息”。 但是我需要将var加密存储在SQL数据库中，因此我将它通过ajax发送到服务器，然后将其存储在表中。 
 
 我后来请求加密的消息（再次通过ajax）并将其存储在加密的变量中。 之后我想解密它： 
 
var decrypted = sjcl.decrypt(pw, encrypted);
alert(decrypted);
 
 但我没有收到包含字符串“messages”的警报，控制台只显示“未捕获的异常：CORRUPT：ccm：tag不匹配”。 
 
 我没有更改加密文本，两个示例之间的唯一区别是我从服务器加密了变量。 
 
 有什么想法有什么不对？ 
 
 编辑： 
 
 将它存储在DB中的ajax代码： 
 
var url = "action.php?action=r&n="+name+"&pw="+pw_hashed+"&encrypted="+encrypted;
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function()
{
    if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
    {
        if(xmlhttp.responseText == "success")
        {
            alert("success");
        }
    }
}
 
 以及接收数据的ajax代码： 
 
var url = "action.php?action=l&n="+name+"&pw="+pw_hashed;
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function()
{
    if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
    {
        if(xmlhttp.responseText == "success")
        {
            var encrypted = xmlhttp.responseText;;
        }
    }
}
 
 我还将加密后的加密字符串与服务器上的字符串和客户端上的字符串（用于解密）进行了比较：所有都是相同的。 

I'm experimenting with the Stanford Javascript Crypto Library (SJCL) and want to encrypt and later decrypt a string.
 
The following code works fine:
 
var pw = "password";
var message = "message";
var encrypted = sjcl.encrypt(pw, message);
alert(encrypted);

var decrypted = sjcl.decrypt(pw, encrypted)
alert(decrypted);
 
The first alert show the encrypted data and the second alert shows "message". However I need to store var encrypted in a SQL database so I send it through ajax to the server which stores it in a table.
 
I later request the encrypted message (again through ajax) and store it in the variable encrypted. After that I want to decrypt it:
 
var decrypted = sjcl.decrypt(pw, encrypted);
alert(decrypted);
 
But I don't get an alert which contains the string "messages", the console only displays "uncaught exception: CORRUPT: ccm: tag doesn't match".
 
I didn't change the encrypted text, the only difference between the two examples is that I got the variable encrypted from the server.
 
Any ideas what is wrong?
 
EDIT:
 
The ajax code to store it in the DB:
 
var url = "action.php?action=r&n="+name+"&pw="+pw_hashed+"&encrypted="+encrypted;
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function()
{
    if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
    {
        if(xmlhttp.responseText == "success")
        {
            alert("success");
        }
    }
}
 
And the ajax code to receive the data:
 
var url = "action.php?action=l&n="+name+"&pw="+pw_hashed;
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function()
{
    if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
    {
        if(xmlhttp.responseText == "success")
        {
            var encrypted = xmlhttp.responseText;;
        }
    }
}
 
I also compared the the encrypted string right after the encryption with the string on the server and with the one on the client side (for the decryption): all are the same.

原文：https://stackoverflow.com/questions/30425767