SIFA - Cryptographic Device Example << Download Area << Home

This is a model of a cryptographic device, where the design hasn't been carefully engineered for security (deliberately), but contains some fault-tolerant architecture. This is provided by PIC redundancy and some comparison circuitry. The existence of a bypass channel ("red text 1" above) makes this device somewhat interesting from a security perspective.

The VHDL (which was slightly buggy in places) has been imported into SIFA, and an abstract model created to analyse the connectivity without the presence of faults.

Download cryptobox.sifa (right-click, save link target) or view the schematic.