(C# UWP/WinRT) RSA Encrypt with Modulus and Exponent

Demonstrates how to RSA encrypt with a given modulus and exponent.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Rsa rsa = new Chilkat.Rsa();

// Assuming you already have a base64 modulus and exponent,
// wrap it in XML like this:
string modulus = "qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM=";
string exponent = "AQAB";

Chilkat.Xml xml = new Chilkat.Xml();
xml.Tag = "RSAPublicKey";
xml.NewChild2("Modulus",modulus);
xml.NewChild2("Exponent",exponent);

// Encrypt with the public key.
string publicKey = xml.GetXml();
bool success = rsa.ImportPublicKey(publicKey);

bool usePrivateKey = false;
string plainText = "message in a bottle";

rsa.EncodingMode = "base64";
string encryptedStrBase64 = rsa.EncryptStringENC(plainText,usePrivateKey);
Debug.WriteLine(encryptedStrBase64);