Struct X25519Impl 

pub struct X25519Impl;

The global X25519 implementation.

Implementations

impl X25519Impl

pub fn generate_keypair( rng: &mut dyn Rng, ) -> Result<(X25519PrivateKey, X25519PublicKey), CryptoError>

Generate a fresh keypair: scalar k, Q = X25519(k, 9).

Used for TLS 1.3 ECDHE keygen.

pub fn public_key(k: X25519PrivateKey) -> Result<X25519PublicKey, CryptoError>

Derive the public key from a known private scalar.

No RNG: used for persistent keys (e.g. a TLS static ECDH identity loaded from flash) where the caller already holds k.

pub fn ecdh_shared_secret( k: X25519PrivateKey, peer: X25519PublicKey, ) -> Result<[u8; 32], CryptoError>

X25519 shared secret: X25519(k, peer), 32 bytes.

This is the TLS 1.3 ecdhe_shared_secret (fed into HKDF via HmacSha256).

Trait Implementations

impl X25519 for X25519Impl

fn generate_keypair( rng: &mut dyn Rng, ) -> Result<(X25519PrivateKey, X25519PublicKey), CryptoError>

Generate a fresh keypair: scalar k, Q = X25519(k, 9).

fn public_key(k: X25519PrivateKey) -> Result<X25519PublicKey, CryptoError>

Derive the public key from a known private scalar.

fn ecdh_shared_secret( k: X25519PrivateKey, peer: X25519PublicKey, ) -> Result<[u8; 32], CryptoError>

X25519 shared secret: X25519(k, peer), 32 bytes.