First published 1997 Block sizes 128 bits | Key sizes 128 bits | |
Structure substitution-permutation network |
In cryptography, Square (sometimes written S) is a block cipher invented by Joan Daemen and Vincent Rijmen. The design, published in 1997, is a forerunner to Rijndael, which has been adopted as the Advanced Encryption Standard. Square was introduced together with a new form of cryptanalysis discovered by Lars Knudsen, called the "Square attack".
The structure of Square is a substitution-permutation network with eight rounds, operating on 128-bit blocks and using a 128-bit key.
Square is not patented.
References
Square (cipher) Wikipedia(Text) CC BY-SA