DocumentCode
745982
Title
Cycle Structure of the DES for Keys Having Palindromic (or Antipalindromic) Sequences of Round Keys
Author
Moore, Judy H. ; Simmons, Gustavus J.
Author_Institution
Department of Applied Mathematics, Sandia National Laboratories
Issue
2
fYear
1987
Firstpage
262
Lastpage
273
Abstract
Certain DES keys have been called weak or semiweak based upon the number of distinct round keys which they produce. For the weak keys, all 16 round keys are identical and encryption is the same as decryption. For the semiweak keys, there are only two distinct round keys but no specific weakness of the DES with these keys has been demonstrated.
Keywords
Cryptography; cycle testing; data encryption standard (DES); fixed points and antifixed points; palindromic and antipalindromic sequences of round keys; weak and semiweak keys; Cryptography; Displays; Engines; Joining processes; Mathematics; Testing; Cryptography; cycle testing; data encryption standard (DES); fixed points and antifixed points; palindromic and antipalindromic sequences of round keys; weak and semiweak keys;
fLanguage
English
Journal_Title
Software Engineering, IEEE Transactions on
Publisher
ieee
ISSN
0098-5589
Type
jour
DOI
10.1109/TSE.1987.233150
Filename
1702205
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