# `ExWapp.Noise.Engine.State`
[🔗](https://github.com/elchemista/ex_wapp/blob/v0.1.5/lib/ex_wapp/noise/engine.ex#L21)

Mutable state passed between Noise XX handshake steps.

It keeps ephemeral and static key pairs, the transcript state, and the server
identity material required to derive transport keys.

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*Consult [api-reference.md](api-reference.md) for complete listing*