Action ciphers: A new basic component for E/D similar iterated block cipher

Details

Ressource 1Download: BIB_7786EA42B85E.P001.pdf (488.72 [Ko])
State: Public
Version: author
License: Not specified
Serval ID
serval:BIB_7786EA42B85E
Type
Report: a report published by a school or other institution, usually numbered within a series.
Collection
Publications
Title
Action ciphers: A new basic component for E/D similar iterated block cipher
Author(s)
Jaquet-Chiffelle D.-O.
Institution details
Haute école spécialisée bernoise, technique et informatique
Address
Bienne
Issued date
03/2006
Number
1
Genre
Technical report
Language
english
Number of pages
25
Abstract
In cryptography, most practical block ciphers are E/D similar. Three core components are usually considered and combined to build E/D similar iterated block ciphers. In this report, we define a new one -the action ciphers- that extends the classical concept of group ciphers.Then we investigate a subset of action ciphers, the so-called σ-action ciphers, and give a cryptological characterization for this subset. All group ciphers are σ-action ciphers as well, but choosing a σ-action cipher which is not a group cipher eliminates "bad'" properties of group ciphers while keeping the "good" ones. Any group cipher component in any block cipher can be replaced by a σ-action cipher; such a replacement has no impact on the key-schedule algorithm.Finally, in the appendix, we show an application of these concepts that goes beyond the original scope of core components in E/D similar iterated block ciphers. Indeed we replace some group operations in IDEA by σ-action operations and get a large family of IDEA-like algorithms which can be customized.
Keywords
E/D similar block ciphers, action ciphers
Create date
27/09/2010 16:41
Last modification date
16/03/2023 10:27
Usage data