INNER CODE UNIT · Rust

random

dalek-cryptography/x25519-dalek · src/x25519.rs:103

    pub fn random() -> Self {
        Self::random_from_rng(&mut rand_core::OsRng)
    }
}

impl<'a> From<&'a EphemeralSecret> for PublicKey {
    /// Given an x25519 [`EphemeralSecret`] key, compute its corresponding [`PublicKey`].
    fn from(secret: &'a EphemeralSecret) -> PublicKey {
        PublicKey(EdwardsPoint::mul_base_clamped(secret.0).to_montgomery())
    }
}

/// A Diffie-Hellman secret key which may be used more than once, but is
/// purposefully not serialiseable in order to discourage key-reuse.  This is
/// implemented to facilitate protocols such as Noise (e.g. Noise IK key usage,
/// etc.) and X3DH which require an "ephemeral" key to conduct the
/// Diffie-Hellman operation multiple times throughout the protocol, while the
/// protocol run at a higher level is only conducted once per key.

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