Read e-book online Public Key Cryptography - PKC 2010: 13th International PDF

By Phong Q. Nguyen, David Pointcheval

ISBN-10: 3642130127

ISBN-13: 9783642130120

This e-book constitutes the refereed complaints of the thirteenth overseas convention on perform and concept in Public Key Cryptography, PKC 2010, held in Paris, France, in could 2010. The 29 revised complete papers provided have been conscientiously reviewed and chosen from a hundred forty five submissions. The papers are prepared in topical sections on encryption; cryptanalysis; protocols; community coding; instruments; elliptic curves; lossy trapdoor services; discrete logarithm; and signatures.

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Read Online or Download Public Key Cryptography - PKC 2010: 13th International Conference on Practice and Theory in Public Key Cryptography, Paris, France, May 26-28, 2010, ... Computer Science Security and Cryptology) PDF

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New PDF release: Public Key Cryptography - PKC 2010: 13th International

This booklet constitutes the refereed complaints of the thirteenth foreign convention on perform and concept in Public Key Cryptography, PKC 2010, held in Paris, France, in might 2010. The 29 revised complete papers awarded have been rigorously reviewed and chosen from a hundred forty five submissions. The papers are prepared in topical sections on encryption; cryptanalysis; protocols; community coding; instruments; elliptic curves; lossy trapdoor services; discrete logarithm; and signatures.

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Extra resources for Public Key Cryptography - PKC 2010: 13th International Conference on Practice and Theory in Public Key Cryptography, Paris, France, May 26-28, 2010, ... Computer Science Security and Cryptology)

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Therefore, as pointed out in [3], it is not clear if the decryption algorithm remains practicable when the security parameters are high. -C. -J. Spaenlehauer Security of the System The designers of the cryptosystem propose the following parameters: – – – – p = 2. d should be greater than 50. w = degxy (X) = max{i + j : (i, j) ∈ ΛX } should be greater than 5. The lower bound on k is 3. The size of the secret key is around 100 bits and the size of the public key is close to 500 bits. According to the designers of ASC, there is so far no known attack faster than exhaustive search for these parameters.

FC 2005. LNCS, vol. 3570, pp. 72–87. : Ciphertext-policy attribute-based encryption. In: Proceedings of IEEE Symposium on Security and Privacy, pp. 321–334. : Hierarchical identity based encryption with constant size ciphertext. In: Cramer, R. ) EUROCRYPT 2005. LNCS, vol. 3494, pp. 440–456. : An efficient threshold public key cryptosystem secure against adaptive chosen ciphertext attack. In: Stern, J. ) EUROCRYPT 1999. LNCS, vol. 1592, pp. 90–106. : Chosen-ciphertext security from identitybased encryption.

Thus, it is natural to see expressions in t as coefficients instead of polynomials in t; in other words, in order to speed up the attack, we have to perform the computations in the ring Fp (t)[x, y] (where Fp (t) is the field of fractions) instead of Fp [x, y, t]. In the Level 3 Attack, we replace the ground field Fp (t) by a finite field FpD ≈ Fp [t]/(P (t)) for a large enough D to avoid the swelling of the intermediate coefficients and to recover the initial message modulo P (t). Even more efficiently, we can split P (t) into several irreducible factors Pi (t) of small degree; the Chinese Remainder Theorem is then used to recombine the congruences and retrieve the original message.

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Public Key Cryptography - PKC 2010: 13th International Conference on Practice and Theory in Public Key Cryptography, Paris, France, May 26-28, 2010, ... Computer Science Security and Cryptology) by Phong Q. Nguyen, David Pointcheval


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