Unformatted text preview: g enough to come to any conclusions themselves. All they could do was to look at the results that the NSA showed to them. One unanswered question is whether the Skipjack keyspace is flat (see Section 8.2). Even if Skipjack has no weak keys in the DES sense, some artifact of the key-scheduling process could make some keys stronger than others. Skipjack could have 270 strong keys, far more than DES; the odds of choosing one of those strong keys at random would still be about 1 in 1000. Personally, I think the Skipjack keyspace is flat, but the fact that no one has ever said this publicly is worrisome. Skipjack is patented, but the patent is being withheld from distribution by a patent secrecy agreement . The patent will only be issued when and if the Skipjack algorithm is successfully reverse-engineered. This gives the government the best of both worlds: the protection of a patent and the confidentiality of a trade secret. Previous Table of Contents Next Products | Contact Us | About Us | Privacy | Ad Info | Home Use of this site is subject to certain Terms & Conditions, Copyright © 1996-2000 EarthWeb Inc. All rights reserved. Reproduction whole or in part in any form or medium without express written permission of EarthWeb is prohibited. Read EarthWeb's privacy statement. To access the contents, click the chapter and section titles. Applied Cryptography, Second Edition: Protocols, Algorthms, and Source Code in C (cloth)
Brief Full Advanced Search Search Tips (Publisher: John Wiley & Sons, Inc.) Author(s): Bruce Schneier ISBN: 0471128457 Publication Date: 01/01/96 Search this book:
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----------- Chapter 14 Still Other Block Ciphers
GOST is a block algorithm from the former Soviet Union [655,1393]. “GOST” is an acronym for “Gosudarstvennyi Standard,” or Government Standard, sort of similar to a FIPS, except that it can (and does) refer to just about any kind of standard. (Actually, the full name is Gosudarstv...
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