Hello, perlmonks!

I have a two-parter question about RC5 encryption. For starters, we know RC5 is parametrized on key size, block size, and a number of 'rounds'.

1) If I use the same key and same number of rounds, should the output ciphertext from the 32-bit RC5 = ciphertext from the 128-bit RC5? (my initial tests would lead me to think the answer to this one is 'no').

If 'no', then please read on to question two:

2) Does anybody know of any 128-bit implementations in Perl for RC5? The implementation at Crypt::RC5 (thanks, sifukurt, for writing that!) is only the 32-bit version of the algorithm, and the data I need to decrypt was done with 128.

Such is my dilemma.
Thanks for your help!

-SuaveBenny

In reply to Crypt::RC5 128-bit? by suavebenny

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