IGE mode is broken (Re: IGE mode in OpenSSL)

[James A. Donald]

     --
James A. Donald
 > > > We transmit T(k)= {W(k)} + W(k-1)|{W(k-1)} where |
 > > > means bitwise or, curly brace means encryption.

 > > Should read: We transmit T(k) = {W(k)} +
 > > ((~W(k-11){W(k-1)}) where ~ means bitwise negation,
 > > | means bitwise or, curly brace means encryption.

Travis H. wrote:
 > Today wasn't a good day for typing? ;-)
 >
 > T(k) = {W(k)} + (~W(k-1)|{W(k-1)})
 >
 > Right?

Yes, right, though usually when I get two errors in
rapid succession, I get a third error.


     --digsig
          James A. Donald
      6YeGpsZR+nOTh/cGwvITnSR3TdzclVpR0+pr3YYQdkG
      ORlgCbjNlrRQnTh47hjBg73t8LHfUA5a95TWiM1J
      4GftBho6JL/7abDky8QXOX9fhwJxrXqtP87dChEdo

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