By Valérie Nachef, Emmanuel Volte, Jacques Patarin (auth.), Michel Abdalla, Cristina Nita-Rotaru, Ricardo Dahab (eds.)
This booklet constitutes the refereed lawsuits of the twelfth overseas convention on Cryptology and community safety, CANS 2013, held in Paraty, Brazil, in November 2013.
The 18 revised complete papers offered including 4 invited talks have been rigorously reviewed and chosen from fifty seven submissions. The papers are prepared in topical sections on cryptanalysis, zero-knowledge protocols, dispensed protocols, community defense and purposes, complicated cryptographic primitives, and verifiable computation.
Read Online or Download Cryptology and Network Security: 12th International Conference, CANS 2013, Paraty, Brazil, November 20-22. 2013. Proceedings PDF
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Extra info for Cryptology and Network Security: 12th International Conference, CANS 2013, Paraty, Brazil, November 20-22. 2013. Proceedings
Nd a ﬂaw in the security proofs of GCM given by McGrew and Viega in . The main problem is that inc may be translated to multiple distinct forms in terms of exclusive-ors, such that the equation incr1 (GHASHH (N a )) = incr2 (GHASHH (N b )) (2) may have many more solutions than the desired lN + 1 for any given r1 , r2 , N a and N b , where 0 ≤ r1 , r2 ≤ 232 − 2, N a = N b , and lN is the maximum number of blocks for nonces. Result 3 (). For a randomly chosen H, the probability for the equation (2) to hold is at most 222 (lN + 1)/2128 .
ASIACRYPT 2006. LNCS, vol. 4284, pp. 396–411. Springer, Heidelberg (2006) 23. : Generic Attacks on Unbalanced Feistel Schemes with Expanding Functions. In: Kurosawa, K. ) ASIACRYPT 2007. LNCS, vol. 4833, pp. 325–341. Springer, Heidelberg (2007) 24. : Unbalanced Feistel Networks and Block Cipher Design. In: Gollmann, D. ) FSE 1996. LNCS, vol. 1039, pp. 121–144. Springer, Heidelberg (1996) 25. : Generic Attacks on Feistel Networks with Internal Permutations. In: Preneel, B. ) AFRICACRYPT 2009. LNCS, vol.
With more than one element) of authentication keys are weak key classes, if the ﬁnal masking by block ciphers is computed additively. This is an extension to previous analysis of Procter and Cid. – Based on a special structure of GCM, we show how to turn these forgery attacks into birthday-bound based attacks by attacking the encryption oracle instead of the veriﬁcation or decryption oracle. This can signiﬁcantly increase success probabilities and avoid certain countermeasures. – We provide a method to ﬁx GCM in order to avoid the security proofs’ ﬂaw discovered by Iwata et al.
Cryptology and Network Security: 12th International Conference, CANS 2013, Paraty, Brazil, November 20-22. 2013. Proceedings by Valérie Nachef, Emmanuel Volte, Jacques Patarin (auth.), Michel Abdalla, Cristina Nita-Rotaru, Ricardo Dahab (eds.)