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#ARX

Found 2 articles with this tag.

A visual representation of the Simon and Speck Algorithms
Block Ciphers Intermediate

The Simon and Speck Algorithms

Simon and Speck are two lightweight block ciphers released by the NSA in 2013 for tiny devices. Learn how Simon gets by on AND, rotate, and XOR, how Speck uses add, rotate, and XOR, and why they became some of the most debated ciphers ever published.

A visual representation of the Threefish Algorithm
Block Ciphers Advanced

The Threefish Algorithm

Threefish is the tweakable block cipher inside the Skein hash function, a SHA-3 finalist. Learn how it builds a strong cipher from just addition, rotation, and XOR on 64-bit words, with no S-boxes at all.