Hi, it's my first post to the list, and here is my CryptoPP-newbie first question:
 
Could someone please clue me in to the syntax for changing the feedback size for CFB?  I was hoping that something along the lines of the following would work:
 
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...
 
CFB_Mode<DES>::Decryption cfbDecryption(key, DES::DEFAULT_KEYLENGTH, iv);
cfbDecryption.SetFeedbackSize(8);
 
...
 
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Unfortunately it does not because SetFeedbackSize() can't alter protected data member feedback_m of class CFB_ModePolicy, the class of which it is a member.  But I know that there is some way to change the feedback size, because I've seen other posters allude to doing so in the archives.
 
Anyway, any help figuring out what does work is most appreciated.

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