Multi-party fair exchange protocol explained
In cryptography, a multi-party fair exchange protocol is protocol where parties accept to deliver an item if and only if they receive an item in return.[1]
Definition
Matthew K. Franklin and Gene Tsudik suggested in 1998[2] the following classification:
-party
single-unit general exchange is a
permutation
on
, where each party
offers a single unit of commodity
to
, and receives a single unit of commodity
from
.
-party
multi-unit general exchange is a
matrix of baskets, where the entry
in row
and column
is the basket of goods given by
to
.
See also
Secure multi-party computation
Notes and References
- Mukhamedov. Aybek. Kremer. Steve. Ritter. Eike. Analysis of a Multi-Party Fair Exchange Protocol and Formal Proof of Correctness in the Strand Space model. Financial Crypto. 2005.
- Book: Franklin. Matthew K.. Tsudik. Gene. Financial Cryptography . Secure group barter: Multi-party fair exchange with semi-trusted neutral parties . Lecture Notes in Computer Science . 1998. 1465. 90–102. 10.1007/BFb0055475. 978-3-540-64951-9.
