Title :
Fault Analysis of the Stream Cipher Snow 3G
Author :
Debraize, Blandine ; Corbella, Irene Marquez
Author_Institution :
Security Lab., Meudon, France
Abstract :
Snow 3G is the backup encryption algorithm used in the mobile phone UMTS technology to ensure data confidentiality. Its design - a combiner with memory - is derived from the stream cipher Snow 2.0, with improvements against algebraic cryptanalysis and distinguishing attacks. No attack is known against Snow 3G today. In this paper, a fault attack against Snow 3G is proposed. Our attack recovers the secret key with only 22 fault injections.
Keywords :
3G mobile communication; cryptography; mobile handsets; Snow 3G; algebraic cryptanalysis; backup encryption algorithm; data confidentiality; fault analysis; fault attack; fault injections; mobile phone UMTS technology; stream cipher Snow 2.0; 3G mobile communication; Algorithm design and analysis; Clocks; Cryptography; Data security; Fault diagnosis; Galois fields; Linear feedback shift registers; Mobile handsets; Snow; Gröbner basis; Snow 3G; fault injection; stream cipher;
Conference_Titel :
Fault Diagnosis and Tolerance in Cryptography (FDTC), 2009 Workshop on
Conference_Location :
Lausanne
Print_ISBN :
978-1-4244-4972-9
DOI :
10.1109/FDTC.2009.33
