A little question about CTR mode.
According to what I read in the NIST Special Publication 800-38A (describind
cipher modes), no IV is needed to perform CTR cipher. But using encryption
objects in CTR mode with different IV does not give the same results with
CryptoPP : it seems like the IV used to initialize the object really
matters.

Is there anything I did not understand ? Or is there an IV with the same
size as the block, like in CFB, CBC and OFB ?

Regards,

-- 
C�dric Mallet 

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