How to Validate a Verification?

ePrint Report: How to Validate a Verification?

Houda Ferradi

This paper introduces \textsl{signature validation}, a primitive allowing any \underline{t}hird party $T$ (\underline{T}héodore) to verify that a \underline{v}erifier $V$ (\underline{V}adim) computationally verified a signature $s$ on a message $m$ issued by a \underline{s}igner $S$ (\underline{S}arah).


A naive solution consists in sending by Sarah $x=\{m,\sigma_s\}$ where $\sigma_s$ is Sarah's signature on $m$ and have Vadim confirm reception by a signature $\sigma_v$ on $x$.


Unfortunately, this only attests \textsl{proper reception} by Vadim, i.e. …

eprint report message party report signature solution validation verification verified verify