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2023-09-06 14:24:48 -07:00
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src/mpc/key_exchange.md
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@@ -4,16 +4,16 @@ In TLS, the first step towards obtaining TLS session keys is to compute a shared
<div class="aligncenter"><img src="../../png-diagrams/key_exchange.png" width="800"></div> <div class="aligncenter"><img src="../../png-diagrams/key_exchange.png" width="800"></div>
Below we will denote: ## ECDH
We will denote:
- $P$ as the `Prover` - $P$ as the `Prover`
- $V$ as the `Verifier` - $V$ as the `Verifier`
- $S$ as the `Server` - $S$ as the `Server`
- $\mathbb{pms}$ as the TLS pre-master secret. - $\mathbb{pms}$ as the TLS pre-master secret.
## ECDH Below is the 3-party ECDH protocol between $S$, $P$ and $V$, enabling $P$ and $V$ to arrive at shares of $\mathbb{pms}$.
Using the notation from Wikipedia, below is the 3-party ECDH protocol between $S$, $P$ and $V$, enabling $P$ and $V$ to arrive at shares of $\mathbb{pms}$.
1. $S$ sends its public key $Q_b$ to $P$, and $P$ forwards it to $V$ 1. $S$ sends its public key $Q_b$ to $P$, and $P$ forwards it to $V$