On page 20 of EE Times, Feb. 14, 1994, Roger Woolnough wrote: "By linking up with an Israeli company specializing in cryptographic technology, SGS-Thompson Microelectronics has developed a family of monolithic cryptocomputers aimed at high-security smart-card applications. The new devices combine SGS-Thompson's ST16XYZ secure smart-card architecture with cryptographic enhancements developed by Fortress U&T Ltd." Summarizing the remainder - The approach is based on public key encryption, speed is enhanced by a modular arithmatic coprocessor developed by Fortress for very fast execution of modular exponentiation operations. "A typical 512-bit signature calculation can be performed 10 times faster than with the best performing smart-card cryptoprocessor currently on the market. The ST16CF54 will be followed by further devices, such as the ST16KF74, capable of full-speed X.25 communications."