13 search results - page 1 / 3 » DES is not a Group |
CRYPTO
1992
Springer
13 years 8 months ago
1992
Springer
We prove that the set of DES permutations (encryption and decryption for each DES key) is not closed under functional composition. This implies that, in general, multiple DES-encry...
EJC
2008
13 years 4 months ago
2008
We construct two bijections of the symmetric group Sn onto itself that enable us to show that three new three-variable statistics are equidistributed with classical statistics invo...
JCT
2008
13 years 4 months ago
2008
Using classical transformations on the symmetric group and two transformations constructed in Fix-Mahonian Calculus I, we show that several multivariable statistics are equidistrib...
CORIA
2011
12 years 8 months ago
2011
Named entities play an important role in Information Extraction. They represent unitary namable information within text. In this work, we focus on groups of named entities of the s...
CCECE
2009
IEEE
13 years 11 months ago
2009
IEEE
Abstract—In this work, we propose a framework for supervisory cooperative estimation of multi-agent linear time-invariant (LTI) systems. We introduce a group of sub-observers, ea...