17 Dec
2003
17 Dec
'03
11:17 p.m.
From: "David F. Ogren" <ogren@cris.com> Date: Sat, 20 Jul 1996 19:45:29 -0400 (EDT)
Another paradox of the US export regulations.
The NSA is allowing 40 bit crypto exports. So as a hypothetical example assume that I write a crypto program that uses 40 bit RC4 to encode data (licensing from RSA). I then get an export license using the accelerated process for 40 bit RC4.
Sorry, RC4 only works in OFB mode. It is not a block cypher.