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Download Advances in Cryptology — EUROCRYPT ’89: Workshop on the by Whitfield Diffie (auth.), Jean-Jacques Quisquater, Joos PDF

By Whitfield Diffie (auth.), Jean-Jacques Quisquater, Joos Vandewalle (eds.)

‘I’he int,ernational organization for Cryptologic study (IACK) organizes inter- tioilill coiifcrcnces each year, one in Europe and one within the usa. EUROCRI’PT ’89 was once the 7th ecu convention and was once held in Houthalen, Belgium on April 10-13, 1989. With with reference to three hundred members, it was once might be the most important open conferencr on c:rypt,ogra.phy ever held. the sector of cryptography is increasing not just due to the elevated vulnerability of desktops and networks to a11 expanding variety of threats, but additionally as a result of t1ic ra.pid development in cryptographic equipment, that t,he readers can witness through examining the booklet. the current complaints comprise approximately all contributions that have been awarded together with the talks on the rump consultation. The chapters correspond to the periods on the convention. It wa5 the 1st time rump consultation was once prepared on a Eurocrypt convention. 16 impromptu talks got, and the authors have been invited to put up brief abstracts in their shows. a result of distinctive personality of this consultation, the editors have taken the freedom to shorten a few of these.

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Extra resources for Advances in Cryptology — EUROCRYPT ’89: Workshop on the Theory and Application of Cryptographic Techniques Houthalen, Belgium, April 10–13, 1989 Proceedings

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Q ) with some part of the protocol. Lnfortunately, the security of the protocol seems also difficult to assess. 36 V. CONCLUSION The authenticated key-exchange algorithm described in section 111is simple and only needs few data exchanges. The security level only depends on the length of the words exchanged and not on the number of exchanges. The operations involved in the protocol are identical to those involved in a Diffie-Hellman key-exchange. The security could not be assessed within the current terminology, b u t some arguments were given why the scheme should be secure.

T h e P s e u d o - I n v e r s e o f e a c h b i t s t r i n g c a n b e c a l c u l a t e d b y a p p l y i n g t h e NOT-OperaZion. * O p e r a t i o n s i n g e n e r a l a r e n o t commutative a s c a n b e shown by 001 o r u s i n g a s e c o n d o p e r a t i o n g d e s c r i b e d by t a b e l l e 1 1 0 , 0 0 0 , t h e Cayley t a b l e : 27 9 - 0 0 0 001 0 1 0 0 1 1 1 0 0 1 0 1 110 1 1 1 000 001 010 011 100 101 110 111 0 0 0 0 0 1 010 011 100 101 110 1 1 1 - 001 010 011 100 101 110 110 011 100 101 011 111 011 100 101 011 000 001 110 1 1 1 001 110 1 1 1 001 110 111 0 0 1 110 1 1 1 001 110 1 1 1 100 101 011 1 0 0 111 0 0 1 101 011 100 101 111 100 101 011 100 001 101 011 100 101 0 0 1 110 110 1 1 1 For = f(100, 101) = 001 and * O p e r a t i o n s f w i t h a n y t a b e l l e [ i ] t h a t i n c l u d e s two o n e - b i t s , a p p l i e d 0 times t o o n e v a l u e x r e s u l t i n t h e v a l u e x i t s e l f .

We wish to thank him for the time he spent working with us on the differences and similarities of the two approaches. References [l]F. Bauspiefi: SELANE - SEcare Local Area Network Environment, Studienarbeit, Universitat Karlsruhe, 1988 [2] Th. Beth: Eficient Zero-Knowledge Identification Scheme for Smart Cards, Proc. of Eurocrypt '88, Springer LNCS 330, pp. 77-84, 1988 [3] W. Diffie, M. Hellman: New Directions in Cryptography, IEEE Trans. on Information Theory, IT-22, pp. 644-654, 1976 [4]Ch. Giinther: Difie-Hellman and El-Gamal protocols with one single authentication key, Proc.

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