|Dimensions||9300μm x 7000μm|
At the IS, a new 64-bit block cipher algorithm has been developed. the cipher is based on mixing of operations in different algebraic structures and is proposed to become a new European encryption standard. In a very early stage of development hardware implementation aspects have been taken into cosideration and have significantly influenced the cipher.
To achieve a high data encryption rate, the chip's datapth is strongly pipelined. By the use of a highly sophisticated data scheduling scheme it is guaranteed that the pipeline is permanantly fully loaded. A data encrytpion rate of 44 Mbit/s is achieved with a 25 MHz chip clock. To provide the pipeline witha sufficient amount of data an extremely fast interface is required. Hence a 32-bit parallel interface was implemented permittingdata rate of up to 33 MByte/s.
The chip design is cell based. The 95'000 transistors including one Kbit of RAM and two 17x17 bit multiplier macrocells, indicate the high complexity of the chip.