SignString Method
Signs a string.
function SignString(S: String; Detached: Boolean): String;
Remarks
Use this method to sign a string and get the signed message in another string.
Use SigningKeys to provide the signing keys.
Please note that you might need to provide a passphrase to decrypt your signing key. This can be done via KeyPassphraseNeeded event, or by assigning the passphrase to the key object's Passphrase property.