C#

RSA OAEP Padding

See more RSA Examples

Demonstrates how to use OAEP padding with the RSA encryption algorithm. More information about OAEP Padding. C#

bool success = false;

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

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

// RSA public key in XML format:
string pubKeyXml = "<RSAPublicKey><Modulus>of3im3mRgd2NLXIGoK6uYLg6jj0Ug2b42rnqa5Tbwz2ieFqMJqt+++x2oqLYGurlz49nt+7/785g3XYWqoka4u9c9zul6YubIjnBM72dQy7rEkEfbUxgjcxqXyjZFx+FpaxFUecLu688XEu+9UA42VKiCgcl+E7TrqnfeeYpNXc=</Modulus><Exponent>AQAB</Exponent></RSAPublicKey>";

Chilkat.PublicKey pubKey = new Chilkat.PublicKey();
success = pubKey.LoadFromString(pubKeyXml);
if (success == false) {
    Debug.WriteLine(pubKey.LastErrorText);
    return;
}

success = rsa.UsePublicKey(pubKey);
if (success == false) {
    Debug.WriteLine(rsa.LastErrorText);
    return;
}

// To use Optimal Asymmetric Encryption Padding (OAEP) padding,
// simply set the PkcsPadding property to false
rsa.PkcsPadding = false;

// Encrypt a string and return the encrypted data base64-encoded:
rsa.EncodingMode = "base64";

string plainText = "RSA Encryption should be easy.";

bool usePrivateKey = false;
string encryptedStr = rsa.EncryptStringENC(plainText,usePrivateKey);
Debug.WriteLine(encryptedStr);