RC5

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RC5 is a block cipher designed by Ronald Rivest in 1994, RC stands for "Rivest Cipher". The AES candidate RC6 was based on RC5.

RC5 is a parameterized algorithm with a variable block size, a variable key size, and a variable number of rounds. Block sizes can be 32-bits, 64-bits, and 128-bits in size. The number of rounds range from 0 to 255. The key size ranges from 0 to 2040 bits in size.

Cryptanalysis

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