sign static method
Implementation
static String sign(String message, String privateKey, String passphrase,
{KeyOptions? options}) {
var requestBuilder = model.SignRequestObjectBuilder(
message: message,
passphrase: passphrase,
privateKey: privateKey,
options: OpenPGPRequestBuilders.keyOptionsBuilder(options),
);
return OpenPGPResponseHandlers.stringResponse(
OpenPGPBridge.callSync("sign", requestBuilder.toBytes()));
}