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CryptoJS SHA256 hash do not match C#/.NET SHA256 hash #99

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Create a new web application using preferably Visual Studio
2. Paste the code from the attached file as needed into default.ascx.cs file.
3. Complile and run the application to view default.aspx web form.

String to hash: bravo.john2k9@gmail.com

What is the expected output? What do you see instead?
Expected: CJ/gIFQ4kB/F8+kk8cDi8TAf731V/mp0rFY162yDckc= 
Got: HjZp0hFZZRMnNo5JxotoZ9tS5oK7VSfO/pj1Nd/Aq4Y=

What version of the product are you using? On what operating system? 3.1.2

Please provide any additional information below:
The hash will be created on server side initially and will be used as needed, 
though the hash generated on server side shall match the hash generated by 
CryptoJS.

Original issue reported on code.google.com by sushil.s...@gmail.com on 8 Oct 2013 at 4:56

Attachments:

GoogleCodeExporter commented 9 years ago 
The problem is probably rooted in the fact that C#, by default, will convert 
characters to bytes using UTF-16, and CryptoJS using UTF-8. You'll have to 
change one or the other so they match.

That being said, there still must be something funky going on in your JS, 
because neither your expected nor your actual result is the actually expected 
result for either UTF-16 or UTF-8.

Original comment by Jeff.Mott.OR on 8 Oct 2013 at 5:39

GoogleCodeExporter commented 9 years ago 
Thanks Jeff for the quick reply.

I verified my C# output with Hash Generator at 
http://www.insidepro.com/hashes.php?lang=eng by inputting 
bravo.john2k9@gmail.com in the password field, and got the following in the 
fourth field of SHA256 block:

CJ/gIFQ4kB/F8+kk8cDi8TAf731V/mp0rFY162yDckc=

Now based on this, could you provide with the CryptoJS snippet to get UTF-16 
result to let me try running the same to match with C# and insidePro results?

Original comment by sushil.s...@gmail.com on 8 Oct 2013 at 6:49

GoogleCodeExporter commented 9 years ago 
The attached code produces the following output:

.NET SHA256: CJ/gIFQ4kB/F8+kk8cDi8TAf731V/mp0rFY162yDckc= 

the uemail cookie is: uemail=bravo.john2k9@gmail.com
CryptoJS.SHA256 hash is: 
1e3669d21159651327368e49c68b6867db52e682bb5527cefe98f535dfc0ab86
CryptoJS.enc.Base64: HjZp0hFZZRMnNo5JxotoZ9tS5oK7VSfO/pj1Nd/Aq4Y=
base64 to word: 1e3669d21159651327368e49c68b6867db52e682bb5527cefe98f535dfc0ab86
CryptoJS.enc.Latin1: 6iÒYe'6ŽIƋhgÛR悻U'Îþ˜õ5ßÀ«†
CryptoJS.enc.Hex: 
1e3669d21159651327368e49c68b6867db52e682bb5527cefe98f535dfc0ab86

Original comment by sushil.s...@gmail.com on 8 Oct 2013 at 7:07

GoogleCodeExporter commented 9 years ago 
> I verified my C# output with Hash Generator at 
> http://www.insidepro.com/hashes.php?lang=eng
> by inputting bravo.john2k9@gmail.com in the password field, and got the 
following in
> the fourth field of SHA256 block:

The first and second fields are the typically expected value. The third and 
fourth, according to the site, are "in Unicode." That's not actually helpful, 
because Unicode could mean UTF-8, or it could mean UTF-16 (either little- or 
big-endian), or it could mean UTF-32 (either little- or big-endian). Through 
trial and error, I discovered that it means UTF-16 little-endian.

You should be able to get the same result from CryptoJS if you load the utf16 
component and hash the result of:

CryptoJS.enc.Utf16LE.parse("bravo.john2k9@gmail.com")

Original comment by Jeff.Mott.OR on 8 Oct 2013 at 7:18

GoogleCodeExporter commented 9 years ago 
Seems like there is some issue in the code below as I am not getting the 
results you got, could you take a look and point out what's wrong:

    <script src='Scripts/jquery-1.8.2.min.js'></script>
    <script src='scripts/jquery.cookie.js'></script>
    <script src='http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/sha256.js'></script>;
    <script src='http://crypto-js.googlecode.com/svn/tags/3.1.2/build/components/enc-utf16-min.js'></script>;

    <script>
        $(document).ready(function () {
            var words = CryptoJS.enc.Utf16LE.parse('bravo.john2k9@gmail.com');
            document.write('<br />words: ' + words);
            var hash = CryptoJS.SHA256(words);
            document.write('<br />hash: ' + hash); 
            var encStr = hash.toString(CryptoJS.enc.Utf16LE);
            document.write('<br />encStr: ' + encStr);
            document.write('<br />CryptoJS.enc.Utf16LE.parse(encStr): ' + CryptoJS.enc.Utf16LE.parse(encStr));
            document.write('<br />hash.toString(CryptoJS.enc.Latin1): ' + hash.toString(CryptoJS.enc.Latin1));
            document.write('<br />hash.toString(CryptoJS.enc.Hex): ' + hash.toString(CryptoJS.enc.Hex));
        });

Output:

words: 
62007200610076006f002e006a006f0068006e0032006b003900400067006d00610069006c002e00
63006f006d00
hash: 089fe0205438901fc5f3e924f1c0e2f1301fef7d55fe6a74ac5635eb6c837247
encStr: 鼈⃠㡔ᾐⓩ샱ἰ緯﹕瑪嚬荬䝲
CryptoJS.enc.Utf16LE.parse(encStr): 
089fe0205438901fc5f3e924f1c0e2f1301fef7d55fe6a74ac5635eb6c837247
hash.toString(CryptoJS.enc.Latin1): Ÿà 
T8Åóé$ñÀâñ0ï}Uþjt¬V5ëlƒrG
hash.toString(CryptoJS.enc.Hex): 
089fe0205438901fc5f3e924f1c0e2f1301fef7d55fe6a74ac5635eb6c837247

Original comment by sushil.s...@gmail.com on 8 Oct 2013 at 8:39

GoogleCodeExporter commented 9 years ago 
I'm not sure why you think anything is wrong. The hex hash value you get is the 
same as what insidepro.com gives you: 
089fe0205438901fc5f3e924f1c0e2f1301fef7d55fe6a74ac5635eb6c837247

Original comment by Jeff.Mott.OR on 8 Oct 2013 at 9:04

GoogleCodeExporter commented 9 years ago 
Thanks Jeff.  I was trying to get CJ/gIFQ4kB/F8+kk8cDi8TAf731V/mp0rFY162yDckc=, 
is there a way to get this value using the hash above?

Original comment by sushil.s...@gmail.com on 8 Oct 2013 at 9:14

GoogleCodeExporter commented 9 years ago 
That's a base64 result, so...

    hash.toString(CryptoJS.enc.Base64)

(Make sure you've loaded the base64 component.)

Original comment by Jeff.Mott.OR on 8 Oct 2013 at 10:37

GoogleCodeExporter commented 9 years ago 
Thanks a lot Jeff.  I got both UTF 8 and UTF16 working.

I have attached sample VS2012 C#.NET projects for reference, error handling, 
and code optimization is not done.

Original comment by sushil.s...@gmail.com on 9 Oct 2013 at 3:51

Attachments:

GoogleCodeExporter commented 9 years ago

Original comment by Jeff.Mott.OR on 10 Oct 2013 at 4:20