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BEAR and LION ciphers

The BEAR and LION block ciphers were invented by Ross Anderson and Eli Biham by combining a stream cipher and a cryptographic hash function. The algorithms use a very large variable block size, on the order of 213 to 223 bits or more[clarification needed]. Both are 3-round generalized (alternating) Feistel ciphers, using the hash function and the stream…

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BEAR and LION ciphers

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stream cipher hash function block ciphers bear lion uses twice provably secure ross anderson eli biham keys retrieved pat morin

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