RSA encrypting and decrypting
RSA encrypting and decrypting
Hey! I'm trying to make a function that takes a public key and text to format as parameters, both as strings. I'm trying to log in to steam via post requests and have to pass in the password encrypted with RSA key gotten from steam. I can get the key from steam fine as string but I cannot find a working way to use the key to encrypt the password.
I haven't worked yet with RSA. The concept seems to be interesting though. So. After googleing it, I guess, this is what you are looking for:
Code:
public static string Encryption(string strText)
{
var publicKey = "<RSAKeyValue><Modulus>21wEnTU+mcD2w0Lfo1Gv4rtcSWsQJQTNa6gio05AOkV/Er9w3Y13Ddo5wGtjJ19402S71HUeN0vbKILLJdRSES5MHSdJPSVrOqdrll/vLXxDxWs/U0UT1c8u6k/Ogx9hTtZxYwoeYqdhDblof3E75d9n2F0Zvf6iTb4cI7j6fMs=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";
var testData = Encoding.UTF8.GetBytes(strText);
using (var rsa = new RSACryptoServiceProvider(1024))
{
try
{
// client encrypting data with public key issued by server
rsa.FromXmlString(publicKey.ToString());
var encryptedData = rsa.Encrypt(testData, true);
var base64Encrypted = Convert.ToBase64String(encryptedData);
return base64Encrypted;
}
finally
{
rsa.PersistKeyInCsp = false;
}
}
}
Source: https://stackoverflow.com/questions/17128038/c-sharp-rsa-encryption-decryption-with-transmission
Originally Posted by defaulto
