[Cryptography] NIST Workshop on Elliptic Curve Cryptography Standards

[Adrian McCullagh]

<If I remember correctly the one considered in the DES competition
<had a 64-bit key.  But I may be confused here.

 <                               Bear



If my memory serves me correct, the Lucifer cipher was developed by IBM initially as a 128 bit cipher but was later reduced by IBM itself to 64 bit.  I think this was for speed only but I could be mistaken on this.  Further, I think the reason for the further reduction to 56 bit was for the introduction of a parity correction.


I am unaware of the NSA being involved in any of this.  My understanding was that the NSA was involved in adjusting the S-Box structure.  Further the NSA refused to say why they made the adjustments;  that is they never justified why they did what they did.

 






Dr Adrian McCullagh
Ph.D., LL.B. (Hons), B. App. Sc.(Computing)
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