Financial Cryptography and Data Security: FC 2010 Workshops, - download pdf or read online

By Radu Sion, Reza Curtmola, Sven Dietrich, Aggelos Kiayias, Josep M Miret, Kazue Sako, Francesc Sebé

This quantity includes the workshopproceedings of the accompanying workshops of the 14th monetary Cryptograpy and information safeguard overseas convention 2010, hung on Tenerife, Canary Islands, Spain, January 25-28, 2010. FinancialCryptographyandData Securityis a majorinternationalforumfor learn, complicated improvement, schooling, exploration, and debate relating to details coverage, with a speci?c specialise in advertisement contexts. The c- ference covers all elements of securing transactions and structures and particularly encourages unique paintings targeting either basic and utilized real-world deployments on all facets surrounding trade safeguard. 3 workshops have been co-located with FC 2010: the Workshop on Real-Life CryptographicProtocolsandStandardization(RLCPS),theWorkshoponEthics in computing device safety study (WECSR), and the Workshop on light-weight Cryptography for Resource-Constrained units (WLC). Intimate and colourful by way of culture, the high quality application used to be no longer the one appeal of FC. long ago, FC meetings were held in hugely research-synergistic destinations comparable to Tobago, Anguilla, Dominica, Key West, Guadelupe, Bermuda, the Grand Cayman, and Cozumel Mexico. 2010 used to be the ?rst 12 months that the convention used to be hung on eu soil, within the Spanish Canary Islands, in Atlantic waters, a couple of miles throughout Morocco. Over a hundred researchers from greater than 20 international locations have been in attendance.

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Additional resources for Financial Cryptography and Data Security: FC 2010 Workshops, RLCPS, WECSR, and WLC 2010, Tenerife, Canary Islands, Spain, January 25-28, 2010, Revised Selected Papers

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In this scheme, the 480-bit coupons are of the form (k, H(epkr ), T1 = g r ). It is possible to generalize the scheme by replacing the computation of T0 via the exclusive-or to encryption using any symmetric scheme. However, the use of the exclusive-or would perhaps offer the best implementation opportunities. In this case in term of implementation the situation is like the last possibility for DHAES with the difference than the tag has to store bigger coupons and to perform an exclusive-or between two 240-bit numbers instead of two 160-bit numbers so it requires approximatively 200 GE more.

Polynom) then count ← count + 1; Else count ← 0; i ← i + 1; polynomprev. ← polynom; 40 J. Melia-Segui, J. Garcia-Alfaro, and J. Herrera-Joancomarti Table 1. 1280 Table 2. Value of |sa | for a successful attack in the worst case after 10 tests Sequence T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 |sa | 238 254 254 190 510 158 254 286 238 222 rates are reported in Table 1. Notice that they are close to the theoretic value (n+1) with 8n n = 16 ≈ 0, 1328. The second analysis provides the number of bits that has been needed to achieve a successful attack.

1 and [24]). Let G be a cyclic group of prime order q. The private key to decrypt a message is esk ∈ Zq and the corresponding public key is epk = g esk . The DHAES encryption scheme can be used to obtain and RFID identification scheme as described in Figure 2, where H is a cryptographically secure hash function. R a∈ T {0, 1}λ k1 k2 = H(T0 T0esk ) tk a = SymDec(T2 , k2 ) Verify T1 (using k1 ), a and tk a T0 , T1 , T2 T0 k1 T1 T2 = g r ; R = epkr k2 = H(T0 R) = Mac(tk a, k1 ) = SymEnc(tk a, k2 ) Fig.

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