RC2 key schedule

Posted by calccrypto on Stack Overflow See other posts from Stack Overflow or by calccrypto
Published on 2010-05-30T17:22:11Z Indexed on 2010/05/30 17:32 UTC
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cryptography

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key

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rc2

Can someone explain how the RC2 key schedule works (particularly the very beginning of it)? i know it uses little endian, but my implementation is not working for any key except "0000 0000 0000 0000"

Test Vector
Key = 88bc a90e 9087 5a
Plaintext = 0000 0000 0000 0000
Ciphertext = 6ccf 4308 974c 267f

im assuming that the first thing to do with the key would be to change it into

bc88 0ea9 8790 5a

and yes i know RC2 is not even used anymore, but i would still like to know

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