Title :
The COFB Mode of Operation and Its Security Analysis
Author :
Wen, Fengtong ; Liu, Jinguo ; Shan, Wei
Author_Institution :
Sch. of Sci., Jinan Univ.
Abstract :
In this paper, on the basis of counter mode and output feedback mode, a novel block cipher mode of operation - COFB was proposed. In the new scheme, a nonce N was used. The novel mode solves the synchronization question of CTR mode by the nonce and the circular question of OFB mode by xoring a random value. The new scheme is provable secure if the underlying block cipher is a pseudorandom permutation
Keywords :
cryptography; feedback; synchronisation; COFB mode; block cipher mode; counter mode; output feedback mode; provable security; pseudorandom permutation; security analysis; synchronization; Code standards; Communications technology; Counting circuits; Cryptography; Educational institutions; NIST; Output feedback; Polynomials; Security; Standards publication;
Conference_Titel :
Computational Intelligence and Security, 2006 International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
1-4244-0605-6
Electronic_ISBN :
1-4244-0605-6
DOI :
10.1109/ICCIAS.2006.295276
