In this demo we are using the Cobham Gaisler GR716 microcontroller to run an embedded application using Klepsydra’s Implementation of Rijndael algorithm for encryption. The demo runs on the GR716-MINI board, receiving the text to be encrypted through one of its serial interfaces, and sending back the encrypted data. The communication between the PC and the GR716 is established trought a USB to UART interface. A web application running on the PC provides a user interface to write the text and command the encryption. The corresponding encrypted data is then received and displayed in the application, along with the time required for the LEON3 processor in the GR716 to process the encryption.