Home

A General Analysis of the Security of Elastic Block Ciphers

Debra L. Cook; Moti Yung; Angelos D. Keromytis

Title:
A General Analysis of the Security of Elastic Block Ciphers
Author(s):
Cook, Debra L.
Yung, Moti
Keromytis, Angelos D.
Date:
Type:
Technical reports
Department:
Computer Science
Permanent URL:
Series:
Columbia University Computer Science Technical Reports
Part Number:
CUCS-038-05
Publisher:
Department of Computer Science, Columbia University
Publisher Location:
New York
Abstract:
We analyze the security of elastic block ciphers in general to show that an attack on an elastic version of block cipher implies a polynomial time related attack on the fixed-length version of the block cipher. We relate the security of the elastic version of a block cipher to the fixed-length version by forming a reduction between the versions. Our method is independent of the specific block cipher used. The results imply that if the fixed-length version of a block cipher is secure against attacks which attempt key recovery then the elastic version is also secure against such attacks.
Subject(s):
Computer science
Item views:
156
Metadata:
text | xml

In Partnership with the Center for Digital Research and Scholarship at Columbia University Libraries/Information Services | Terms of Use