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How to Encrypt in Node.js and Decrypt in C#

Are you trying to send messages to a .NET application from node.js and you want to encrypt them?

You can find here a simple example to accomplish it.

Encrypt in node.js:

var crypto = require("crypto");
var key = "00000000000000000000000000000000"; //replace with your key
var iv = "0000000000000000"; //replace with your IV
var cipher = crypto.createCipheriv("aes256", key, iv);
var crypted = cipher.update(authorizationKey, "utf8", "base64");
crypted +="base64");

Decrypt with C#:

    string keyString = "00000000000000000000000000000000"; //replace with your key
string ivString = "0000000000000000"; //replace with your iv

byte[] key = Encoding.ASCII.GetBytes(keyString);
byte[] iv = Encoding.ASCII.GetBytes(ivString);

using (var rijndaelManaged =
new RijndaelManaged { Key = key, IV = iv, Mode = CipherMode.CBC })
rijndaelManaged.BlockSize = 128;
rijndaelManaged.KeySize = 256;
using (var memoryStream =
new MemoryStream(Convert.FromBase64String(AuthorizationCode)))
using (var cryptoStream =
new CryptoStream(memoryStream,
rijndaelManaged.CreateDecryptor(key, iv),
return new StreamReader(cryptoStream).ReadToEnd();

Hope this helps.