davey555 davey555 - 1 year ago 206
Node.js Question

Hashing a password using SHA256 and .NET/Node.js

Im Storing SHA256 hashes of user passwords in my database generated by .NET and I need to be able to check them with Node.js. The only problem is that .NET and Node.js create different hashes for the same password.

Password: ThisPassword


var ue = new UnicodeEncoding();
var byteSourceText = ue.GetBytes("ThisPassword");
var byteHash = new System.Security.Cryptography.SHA256Managed().ComputeHash(byteSourceText);
return Convert.ToBase64String(byteHash);


Node.js (Using Crypto):

var crypto = require('crypto');
return crypto.createHash('sha256').update('ThisPassword').digest('base64')


I found this, but was unable to figure out how to implement his solution.

Answer Source

Edit: You are using UTF-16 in C#, you must use same encoding in both languages:


var crypto = require("crypto");
var sha256 = crypto.createHash("sha256");
sha256.update("ThisPassword", "utf8");//utf8 here
var result = sha256.digest("base64");
console.log(result); //d7I986+YD1zS6Wz2XAcDv2K8yw3xIVUp7u/OZiDzhSY=


SHA256 sha256 = SHA256Managed.Create(); //utf8 here as well
byte[] bytes = sha256.ComputeHash(Encoding.UTF8.GetBytes("ThisPassword"));
string result = Convert.ToBase64String(bytes);
Console.WriteLine(result); //d7I986+YD1zS6Wz2XAcDv2K8yw3xIVUp7u/OZiDzhSY=
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