Using Fortezza for transparent file encryption
Jeremy Epstein, Terry Van Williams · 2002
SISTex's Assure(R) Basic product provides security features including access controls and transparent file encryption (using the Data Encryption Standard) in a DOS/Windows environment. To meet the needs of certain customers, we converted the DES based file encryption to use NSA's Fortezza card, which uses the Skipjack algorithm. Despite our expectations, Fortezza was not a clean replacement for DES. The paper discusses some of the thorny technical problems encountered during product development.