securesubmit SecureSubmit by: securesubmit .NET Framework 2.0 This package targets .NET Framework 2.0. The package is compatible with this framework or higher. 814 total downloads last updated 7/1/2014 Latest version: 1.1.0 The SecureSubmit .Net SDK simplifies the processing of credit card transactions using Heartland Payment System’s Portico Payment Gateway.