Struct SharedKey 

pub struct SharedKey(/* private fields */);

Shared key derived via ECDH between two parties’ trade keys.

Internally a Keys instance whose secret is the 32-byte ECDH output of (local_secret, counterparty_pubkey). Both sides of the conversation derive an identical value and therefore an identical public key, which is what gift wraps are addressed to.

Implementations

impl SharedKey

pub fn derive( secret: &SecretKey, counterparty: &PublicKey, ) -> Result<Self, MostroError>

Derive a shared key from a local secret key and the counterparty’s public key using the secp256k1 ECDH primitive exposed by nostr_sdk::util::generate_shared_key.

Both peers obtain the same SharedKey by swapping arguments (A.derive(a_sk, b_pk) == B.derive(b_sk, a_pk)).

pub fn from_keys(keys: Keys) -> Self

Build a SharedKey from an already-derived Keys value.

Useful when a client persists a freshly-generated Keys instead of re-deriving it on every load.

pub fn keys(&self) -> &Keys

Borrow the underlying Keys.

pub fn public_key(&self) -> PublicKey

Public key of this shared key — the value used as the p tag on every gift wrap belonging to the channel.

pub fn secret_key(&self) -> &SecretKey

Borrow the underlying secret key.

pub fn to_hex(&self) -> String

Serialize the secret as a lower-case hex string suitable for client persistence. Pair with SharedKey::from_hex to round-trip.

pub fn from_hex(hex: &str) -> Result<Self, MostroError>

Rebuild a SharedKey from a hex-encoded secret previously produced by SharedKey::to_hex.

Trait Implementations

impl Clone for SharedKey

fn clone(&self) -> SharedKey

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SharedKey

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.