Advances in Cryptology -- CRYPTO 2014: 34th Annual by Juan A. Garay, Rosario Gennaro

By Juan A. Garay, Rosario Gennaro

The volume-set, LNCS 8616 and LNCS 8617, constitutes the refereed complaints of the thirty fourth Annual overseas Cryptology convention, CRYPTO 2014, held in Santa Barbara, CA, united states, in August 2014.

The 60 revised complete papers awarded in LNCS 8616 and LNCS 8617 have been rigorously reviewed and chosen from 227 submissions. The papers are equipped in topical sections on symmetric encryption and PRFs; formal equipment; hash features; teams and maps; lattices; uneven encryption and signatures; part channels and leakage resilience; obfuscation; FHE; quantum cryptography; foundations of hardness; number-theoretic hardness; information-theoretic protection; key alternate and safe communique; 0 wisdom; composable safety; safe computation - foundations; safe computation - implementations.

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Additional info for Advances in Cryptology -- CRYPTO 2014: 34th Annual Cryptology Conference, Santa Barbara, CA, USA, August 17-21, 2014, Proceedings, Part I (Lecture Notes in Computer Science)

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Johansson, T. ) EUROCRYPT 2012. LNCS, vol. 7237, pp. 63–80. Springer, Heidelberg (2012) 19. : How to protect DES against exhaustive key search (an analysis of DESX). Journal of Cryptology 14(1), 17–35 (2001) 20. : Preimage resistance beyond the birthday bound: Double-length hashing revisited. pdf 21. : An Asymptotically Tight Security Analysis of the Iterated Even-Mansour Cipher. , Sako, K. ) ASIACRYPT 2012. LNCS, vol. 7658, pp. 278–295. Springer, Heidelberg (2012) 22. : Towards Key-Length Extension with Optimal Security: Cascade Encryption and Xor-cascade Encryption.

See in particular [39] which culminates this line of work. Open questions. , to entirely learn its permutation oracle for free. It would be interesting to know if better bounds can be achieved by restricting the number of permutation queries. This is all the more relevant given that many applications will impose limitations on the number of encryptions/decryptions available to the adversary. 2 Definitions Blockciphers and Cascades. A blockcipher is a function E : {0, 1}κ × {0, 1}n → {0, 1}n such that E(k, ·) : {0, 1}n → {0, 1}n is a permutation for each key k ∈ {0, 1}κ.

Paterson, and P. Rogaway any associated data A ∈ {0, 1}∗, let CΠ (K, M, A, τ ) be the set of all ciphertexts C such that D(K, C, A, τ ) accepts with message M , meaning its output is (M, τ ) for some τ . We say that Π has unique ciphertexts if the set CΠ (K, M, A, τ ) has size at most one for all K, M, A, τ . This means that, for any given key, message, associated data and state, there exists at most one ciphertext that the decryptor will decrypt to the message in question. Due to the correctness condition, any unique-ciphertext scheme is deterministic.

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