Constructing fair exchange protocols for e-commerce via distributed computation of RSA signatures

Constructing fair exchange protocols for e-commerce via distributed computation of RSA signatures (2003)

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by Jung Min Park

Venue:	in PODC 2003
Citations:	24 - 1 self

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Datum	Value	Source
TITLE	Constructing fair exchange protocols for e-commerce via distributed computation of RSA signatures	INFERENCE
AUTHOR NAME	Jung Min Park	SVM HeaderParse 0.2
AUTHOR AFFIL	; School of Electrical and; Computer Engineering; Purdue University; West Lafayette, IN; Dept. of Electrical and; Dept. of Mathematics; Dep...	SVM HeaderParse 0.2
AUTHOR ADDR	; 47907-1285; Fort Collins, CO 80523-1373; 172	SVM HeaderParse 0.2
ABSTRACT	Applications such as e-commerce payment protocols, elec-tronic contract signing, and certified e-mail delivery require that fair exchange be assured. A fair-exchange protocol al-lows two parties to exchange items in a fair way so that either each party gets the other's item, or neither party does. We describe a novel method of constructing very ef-ficient fair-exchange protocols by distributing the computa-tion of RSA signatures. Specifically, we employ multisig-natures based on the RSA-signature scheme. To date, the vast majority of fair-exchange protocols require the use of zero-knowledge proofs, which is the most computationally intensive part of the exchange protocol. Using the intrinsic features of our multisignature model, we construct protocols that require no zero-knowledge proofs in the exchange proto-col. Use of zero-knowledge proofs is needed only in the pro-tocol setup phase--this is a one-time cost. Furthermore, our scheme uses multisignatures that are compatible with the underlying standard (single-signer) signature scheme, which makes it possible to readily integrate the fair-exchange fea-ture with existing e-commerce systems.	SVM HeaderParse 0.2
YEAR	2003	INFERENCE
VENUE	in PODC 2003	INFERENCE
VENUE TYPE	CONFERENCE	INFERENCE
PAGES	172--181	INFERENCE
CITATIONS	31 found	ParsCit 1.0