CRYPTOREX is a very interesting and innovative project that we have realized for one of our customers. Our task was to build a prototype device for encrypting communications on Ethernet.
One of the requirements was to enable real-time HD video encoding, so the encryption itself was implemented on an FPGA based on an proprietary encryption algorithm. The data transmission was the responsibility of an ARM family microcontroller.
In this case, the biggest challenge was to meet time requirements and ensure proper performance in the data stream handling.