Technical reports:
A General Analysis of the Security of Elastic Block Ciphers
Debra L. Cook; Moti Yung; Angelos D. Keromytis
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- Title:
- A General Analysis of the Security of Elastic Block Ciphers
- Author(s):
-
Cook, Debra L.
Yung, Moti
Keromytis, Angelos D. - Date:
- 2005
- Type:
- Technical reports
- Department:
- Computer Science
- Permanent URL:
- http://hdl.handle.net/10022/AC:P:29420
- 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:
- 109