(.NET Core C#) RSA Sign utf-8 Byte Representation of String

Demontstrates how to sign the utf-8 byte representation of a string.

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

// Load an RSA private key for signing.
Chilkat.PrivateKey privKey = new Chilkat.PrivateKey();
bool success = privKey.LoadEncryptedPemFile("qa_data/pem/rsa_passwd.pem","passwd");
if (success != true) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

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

string originalData = "This is the string to be hashed an RSA signed.";

// Indicate that we want the utf-8 byte representation of the string to be signed
rsa.Charset = "utf-8";

// We want the RSA signature in base64 format
rsa.EncodingMode = "base64";

string sigBase64 = rsa.SignStringENC(originalData,"sha256");
Debug.WriteLine(sigBase64);