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Cryptanalysis of a SIP Authentication Scheme

Abstract : SIP (Session Initiation Protocol) is becoming the mostly deployed signaling protocol for VoIP (Voice over IP). Security is of utmost importance for its usage due to the open architecture of the Internet. Recently, Yoon et al. proposed a SIP authentication scheme based on elliptic curve cryptography (ECC) that claimed to provide higher security than other schemes. However, as demonstrated in this paper, it is still vulnerable to off-line dictionary and partition attacks.
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Fuwen Liu, Hartmut Koenig. Cryptanalysis of a SIP Authentication Scheme. 12th Communications and Multimedia Security (CMS), Oct 2011, Ghent, Belgium. pp.134-143, ⟨10.1007/978-3-642-24712-5_11⟩. ⟨hal-01596196⟩

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