Title :
Cryptanalysis of the full CHAIN cipher
Author :
Yap, Wun-She ; Yeo, Sze Ling ; Yian, Chee Hoo
Author_Institution :
Inst. for Infocomm Res., A*STAR, Singapore, Singapore
Abstract :
In 1999, Mohammad Peyravian and Don Coppersmith from IBM proposed a structured symmetric key block cipher called CHAIN that supports variable block size, key size and number of rounds. In this paper, we initiate the study of CHAIN´s security. More significantly, we show that CHAIN with various block sizes is insecure against impossible differential attack. To the best of our knowledge, this is the first known attack against CHAIN.
Keywords :
cryptography; CHAIN security; block sizes; differential attack; full CHAIN cipher cryptanalysis; structured symmetric key block cipher; Complexity theory; Concrete; Encryption; Equations; Force;
Conference_Titel :
Information Assurance and Security (IAS), 2011 7th International Conference on
Conference_Location :
Melaka
Print_ISBN :
978-1-4577-2154-0
DOI :
10.1109/ISIAS.2011.6122792
