Using One-Way Chains to Provide Message Authentication without Shared Secrets

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Provided by: Politecnico di Torino
Topic: Security
Format: PDF
In this paper, the authors propose a cryptographic protocol which provides authenticity in the exchange of information between two entities without using any shared secret and by using only one-way chains. Such a protocol may have many applications and may be of interest especially in constrained environments where computational power is limited since one-way chains may be constructed using some of the simplest cryptographic one-way functions. They propose and investigate two approaches based on one-way chains, which they call: delayed message authentication and direct message authentication.
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