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Threefish

Threefish

Threefish is a symmetric-key tweakable block cipher designed as part of the Skein hash function, an entry in the NIST hash function competition. Threefish uses no S-boxes or other table lookups in order to avoid cache timing attacks; its... Wikipedia
First published: 2008
Key sizes: 256, 512 or 1024 bits; (key size is equal to block size)