The Block Cipher Square

In this paper we present a new 128-bit block cipher called Square. The original design of Square concentrates on the resistance against dierential and linear cryptanalysis. However, after the initial design a dedicated attack was mounted that forced us to augment the number of rounds. The goal of this paper is the publication of the resulting cipher for public scrutiny.A C implementationof Square is available that runs at 2.63 MByte/s on a 100 MHz Pentium. Our M68HC05 Smart Card implementationtsin 547 bytes andtakes less than 2 msec. (4 MHz Clock). The high degree of parallellism allows hardware implementations in the Gbit/s range today.

• Type: Conference
• Year: 1997
• Where: FSE
• Authors: Joan Daemen, Lars R. Knudsen, Vincent Rijmen
• Keywords: Cipher Called Square, Cryptology, FSE 1997, MHz Pentium, Tsin 547 Bytes