Trait psbt::sign::SecretProvider

pub trait SecretProvider<C: Signing> {
    fn secp_context(&self) -> &Secp256k1<C>;
    fn secret_key(
        &self, 
        fingerprint: Fingerprint, 
        derivation: &DerivationPath, 
        pubkey: PublicKey
    ) -> Result<SecretKey, SecretProviderError>;
}

Structures extended private keys after their corresponding ids (“account ids”) and performs derivation to produce corresponding public keys under a given account

Required methods

fn secp_context(&self) -> &Secp256k1<C>

Returns [Secp256k1] context object used by the provider

fn secret_key(
    &self,
    fingerprint: Fingerprint,
    derivation: &DerivationPath,
    pubkey: PublicKey
) -> Result<SecretKey, SecretProviderError>

Returns secret key matching provided public key by iterating over all extended private keys having the provided fingerprint.

Error

Errors with SecretProviderError::AccountUnknown if none of the known extended private keys has the specified fingerprint and can be derived with a given path into the provided public key.

NB: This does not imply that the given key can’t be derived from know extended public keys, but with a differend derivation. I.e. the function will error just because fingerprint does not match correct extended public key - or derivation path contains a erorr.

Implementors

impl<'secp, C> SecretProvider<C> for MemoryKeyProvider<'secp, C> where
    C: Signing,