DocumentCode
526630
Title
Flexible block ciphers: Modifying LEX
Author
Henricksen, Matt
Author_Institution
Inst. for Infocomm Res., A*STAR, Singapore, Singapore
Volume
1
fYear
2010
fDate
9-11 July 2010
Firstpage
630
Lastpage
634
Abstract
In this paper, we review LEX, a stream cipher that harnesses the strength of the Advanced Encryption Standard (AES) block cipher to produce ciphertext at 2.5 times the speed of the AES. Both AES and LEX have been attacked due to the way that they convert master keys into round keys or state. We consider ways in which to remove the vulnerabilities of LEX without diminishing its throughput. We propose FLEX, a more secure version of LEX that produces keystream at 2.4 times the speed of the underlying block cipher.
Keywords
cryptography; LEX; advanced encryption standard block cipher; ciphertext; fexible block ciphers; stream cipher; Cryptography; AES; LEX; cryptography; security; stream cipher;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Science and Information Technology (ICCSIT), 2010 3rd IEEE International Conference on
Conference_Location
Chengdu
Print_ISBN
978-1-4244-5537-9
Type
conf
DOI
10.1109/ICCSIT.2010.5564740
Filename
5564740
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