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Efficient Almost Secure 1-Round Message Transmission Schemes for 3t+1 Channels

Toshinori ARAKI, Wakaha OGATA

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Summary :

In the model, a sender S wants to send a message to a receiver R secretly and reliably in r-round. They do not share any information like keys, but there are n independent communication channels between S and R, and an adversary A can observe and/or substitute the data which goes through some channels (but not all). In this paper, we propose almost secure (1-round, 3t+1-channel ) MTSs which have following two properties where t is the number of channels A can observe and/or forge. (1) The running time of message decryption algorithm is polynomial in n. (2) Communication cost is smaller than the previous MTSs, if the message is large to some degree.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E93-A No.1 pp.126-135
Publication Date
2010/01/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E93.A.126
Type of Manuscript
Special Section PAPER (Special Section on Cryptography and Information Security)
Category
Secure Protocol

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