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 the Rijndael algorithm, 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.
Famous quotes containing the word square:
“Houses haunt me.
That last house!
How it sat like a square box!”
—Anne Sexton (19281974)
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