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Aaron Kaiser
2023-06-14 16:30:09 +02:00
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thesis/sections/preliminaries.tex
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@@ -28,7 +28,7 @@ This means that the advantage to distinguish between two identical-until-bad gam
\subsection{Elliptic Curves}
The EdDSA signature scheme has been defined using twisted Edwards curves as the underlying group structure. Twisted Edwards curves are a special form of elliptic curves. For the proofs performed in this thesis, no specific properties of twisted Edwards curves are used. Therefore, they will not be introduced in great detail. For more details on twisted Edwards curves the paper "Twisted Edwards Curves" by Bernstein et. al, may be refereed \cite{EPRINT:BBJLP08}. The use of twisted Edwards curves in EdDSA is mainly for performance reasons \cite{CHES:BDLSY11}.
The EdDSA signature scheme has been defined using twisted Edwards curves as the underlying group structure. Twisted Edwards curves are a special form of elliptic curves. For the proofs performed in this thesis, no specific properties of twisted Edwards curves are used. Therefore, they will not be introduced in great detail. For more details on twisted Edwards curves, see the paper by Bernstein et al. \cite{EPRINT:BBJLP08}. The use of twisted Edwards curves in EdDSA is mainly for performance reasons \cite{CHES:BDLSY11}.
The proofs assume two properties of the underlying group structure, which are true for every elliptic curve. The first is that the underlying group is a generic group, which means that it is only possible to perform the well-defined group operation on the group elements, which is widely assumed to be true for elliptic curves. Elliptic curves often use additive group notation, which means that the group operation is called addition. The second assumption is, that the underlying group is an abelian group. Every elliptic curve is an abelian group.