applied cryptography - protocols, algorithms, and source code in c

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Unformatted text preview: s Processor 8088 68000 80286 68020 68030 80386 68030 Speed (in MHz) 4.7 7.6 6 16 16 25 50 Cryptech Newbridge Y Y Y Y Y Y Y Y Y N DES Blocks (per second) 370 900 1,100 3,500 3,900 5,000 10,000 68040 68040 80486 Sun ELC HyperSparc RS6000-350 Sparc 10/52 DEC Alpha 4000/610 HP 9000/887 25 40 66 16,000 23,000 43,000 26,000 32,000 53,000 84,000 154,000 196,000 125 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) Go! Keyword 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: Go! Previous Table of Contents Next ----------- Later in the article, Tuchman is quoted: “We developed the DES algorithm entirely within IBM using IBMers. The NSA did not dictate a single wire!” Tuchman reaffirmed this when he spoke on the history of DES at the 1992 National Computer Security Conference. On the other hand, Coppersmith wrote [373,374]: “The National Security Agency (NSA) also provided technical advice to IBM.” And Konheim has been quoted as saying: “We sent the S-boxes off to Washington. They came back and were all different. We ran our tests and they passed.” People have pointed to this as evidence that the NSA put a trapdoor in DES. NSA, when questioned regarding any imposed weakness in DES, said [363]: Regarding the Data Encryption Standard (DES), we believe that the public record from the Senate Committee for Intelligence’s investigation in 1978 into NSA’s role in the development of the DES is responsive to your question. That committee report indicated that NSA did not tamper with the design of the algorithm in any way and that the security afforded by the DES was more than adequate for at least a 5–10 year time span for the unclassified data for which...
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This note was uploaded on 10/18/2010 for the course MATH CS 301 taught by Professor Aliulger during the Fall '10 term at Koç University.

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