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Paper 2006/302
Noninteractive two-channel message authentication based on hybrid-collision resistant hash functions.
Atefeh Mashatan and Douglas R. Stinson
Abstract
We consider the problem of non-interactive message authentication using two channels: an insecure broadband channel and an authenticated narrow-band channel. This problem has been considered in the context of ad hoc networks, where it is assumed that there is neither a secret key shared among the two parties, nor a public-key infrastructure in place. We present a formal model for protocols of this type, along with a new protocol which is as efficient as the best previous protocols. The security of our protocol is based on a new property of hash functions that we introduce, which we name ``hybrid-collision resistance''.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- message authenticationhybrid-collisions
- Contact author(s)
- amashatan @ uwaterloo ca
- History
- 2006-09-06: received
- Short URL
- https://ia.cr/2006/302
- License
-
CC BY
