Cryptology ePrint Archive: Report 2011/268

Birthday Forgery Attack on 128-EIA3 Version 1.5

Raja Zeshan Haider

Abstract: 128-EIA3 is an integrity algorithm considered for adoption as a third integrity algorithm by European Telecommunication Standard Institute (ETSI) for 4th generation of GSM networks.128-EIA3 is vul- nerable to birthday forgery attack. Birthday forgery attack requires minimum 2^16 known message-MAC pairs for nding collision in 128-EIA3. 128-EIA3 is susceptible to internal collision of its universal hash function and external collision of its Xoring transformation. Birthday forgery attack on 128-EIA3 allows message forgery with success probability greater than 1/2^32.

Category / Keywords: secret-key cryptography / Message Authentication Code

Date: received 26 May 2011

Contact author: zeshanjalip at hotmail com

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Version: 20110528:180846 (All versions of this report)

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