Advances in Cryptology – ASIACRYPT 2009: 15th International by Alex Biryukov, Dmitry Khovratovich (auth.), Mitsuru Matsui
By Alex Biryukov, Dmitry Khovratovich (auth.), Mitsuru Matsui (eds.)
This publication constitutes the refereed court cases of the fifteenth foreign convention at the idea and alertness of Cryptology and data safety, ASIACRYPT 2009, held in Tokyo, Japan, in December 2009.
The forty-one revised complete papers offered have been conscientiously reviewed and chosen from 298 submissions. The papers are prepared in topical sections on block ciphers, quantum and post-quantum, hash capabilities I, encryption schemes, multi get together computation, cryptographic protocols, hash funtions II, types and frameworks I, cryptoanalysis: sq. and quadratic, versions and framework II, hash capabilities III, lattice-based, and aspect channels.
Read or Download Advances in Cryptology – ASIACRYPT 2009: 15th International Conference on the Theory and Application of Cryptology and Information Security, Tokyo, Japan, December 6-10, 2009. Proceedings PDF
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Extra resources for Advances in Cryptology – ASIACRYPT 2009: 15th International Conference on the Theory and Application of Cryptology and Information Security, Tokyo, Japan, December 6-10, 2009. Proceedings
Springer, Heidelberg (1991) 8. : New Weak-Key Classes of IDEA. , Zhou, J. ) ICICS 2002. LNCS, vol. 2513, pp. 315–326. Springer, Heidelberg (2002) 9. : Two Attacks on Reduced IDEA. In: Fumy, W. ) EUROCRYPT 1997. LNCS, vol. 1233, pp. 1–13. Springer, Heidelberg (1997) 10. : Improved Analysis of Some Simpliﬁed Variants of RC6. R. ) FSE 1999. LNCS, vol. 1636, pp. 1–15. Springer, Heidelberg (1999) 11. : Weak keys for IDEA. R. ) CRYPTO 1993. LNCS, vol. 773, pp. 224–231. Springer, Heidelberg (1994) 12.
Pm , Um ) is Φ =f1 [R1 + α(W2 + W3 + · · · + Wm )] + f2 [W1 + R2 + α(W3 + · · · + Wm ))] + f3 [W1 + W2 + R3 + α(W4 + . . Wm )] + · · · + fm (W1 + W2 + . . Wm−1 + Rm ) m = i−1 m fi Ri + i=1 (fi i=1 m m Wj ) + α j=1 (fi i=1 Wj ) j=i+1 (2) If the attack is performed in the order of (Ps1 , Us1 ), (Ps2 , Us2 ), . . , (Psm , Usm ), where s1 , s2 , . . , sm is a permutation of 1, 2, . . , m. The expected time is m Φ = m fsi Rsi + i=1 i−1 (fsi i=1 m Wsj ) + α j=1 m (fsi i=1 Wsj ) j=i+1 fi Wj + αfj Wi occurs in Φ if and only if j < i and occurs in Φ if and only if j < i where si = i and sj = j.
3. Enumerate the key-dependent sets in ascending order of W : (a) Randomly choose a set of plaintext pairs with cardinality n from the known encryptions. The plaintext pairs must satisfy the requirements of Proposition 1. (b) Partially decrypt all the selected encryption pairs and count the occurrence of LSB(Δs4 ) = 1. (c) Test the hypothesis. If the hypothesis is not rejected, perform exhaustive search for the remaining 25 key bits. 5-round attack to an attack on the 6-round variant of IDEA starting before the MA layer of the second round.