New Kids on the Block | Server Message Block | Nick Jr. (block) | cipher | Lorenz cipher | Ken Block | Block Island | Block 5A, South Sudan | Block 5A | block | Back on the Block | Zero Cipher | writer's block | Vigenère cipher | Ron Block | heart block | Harlon Block | Community Development Block Grant | Cipher Bureau | Attack the Block | William H. Block Co. | Walter Block | Unicode block | Uncle Croc's Block | Tuli Block | Tokyo Designers Block | Revenue block | Portsmouth Block Mills | Porter Block | Peter Block |
In cryptography, the International Data Encryption Algorithm (IDEA), originally called Improved Proposed Encryption Standard (IPES), is a symmetric-key block cipher designed by James Massey of ETH Zurich and Xuejia Lai and was first described in 1991.
Robshaw's notable work includes the cryptanalysis of a number of cryptographic primitives, including the extension of linear cryptanalysis to use multiple approximations, and the design of the block ciphers Crab and RC6.
For example, MISTY1 is a Feistel cipher using a three-round Feistel network in its round function, Skipjack is a modified Feistel cipher using a Feistel network in its G permutation, and Threefish (part of Skein) is a non-Feistel block cipher that uses a Feistel-like MIX function.