Struct grin_keychain::extkey_bip32::ExtendedPubKey

pub struct ExtendedPubKey {
    pub network: [u8; 4],
    pub depth: u8,
    pub parent_fingerprint: Fingerprint,
    pub child_number: ChildNumber,
    pub public_key: PublicKey,
    pub chain_code: ChainCode,
}

Extended public key

Fields

network: [u8; 4]

The network this key is to be used on

depth: u8

How many derivations this key is from the master (which is 0)

parent_fingerprint: Fingerprint

Fingerprint of the parent key

child_number: ChildNumber

Child number of the key used to derive from parent (0 for master)

public_key: PublicKey

Public key

chain_code: ChainCode

Chain code

Methods

impl ExtendedPubKey

pub fn from_private<H>(
    secp: &Secp256k1,
    sk: &ExtendedPrivKey,
    hasher: &mut H
) -> ExtendedPubKey where
    H: BIP32Hasher, 

Derives a public key from a private key

pub fn derive_pub<H>(
    &self,
    secp: &Secp256k1,
    hasher: &mut H,
    cnums: &[ChildNumber]
) -> Result<ExtendedPubKey, Error> where
    H: BIP32Hasher, 

Attempts to derive an extended public key from a path.

pub fn ckd_pub_tweak<H>(
    &self,
    secp: &Secp256k1,
    hasher: &mut H,
    i: ChildNumber
) -> Result<(SecretKey, ChainCode), Error> where
    H: BIP32Hasher, 

Compute the scalar tweak added to this key to get a child key

pub fn ckd_pub<H>(
    &self,
    secp: &Secp256k1,
    hasher: &mut H,
    i: ChildNumber
) -> Result<ExtendedPubKey, Error> where
    H: BIP32Hasher, 

Public->Public child key derivation

pub fn identifier<H>(&self, secp: &Secp256k1, hasher: &mut H) -> [u8; 20] where
    H: BIP32Hasher, 

Returns the HASH160 of the chaincode

pub fn fingerprint<H>(&self, secp: &Secp256k1, hasher: &mut H) -> Fingerprint where
    H: BIP32Hasher, 

Returns the first four bytes of the identifier

Trait Implementations

impl Clone for ExtendedPubKey

fn clone(&self) -> ExtendedPubKey

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for ExtendedPubKey

impl Debug for ExtendedPubKey

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

Formats the value using the given formatter.

impl Display for ExtendedPubKey

fn fmt(&self, fmt: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for ExtendedPubKey

impl FromStr for ExtendedPubKey

type Err = Error

The associated error which can be returned from parsing.

fn from_str(inp: &str) -> Result<ExtendedPubKey, Error>

Parses a string s to return a value of this type.

impl PartialEq<ExtendedPubKey> for ExtendedPubKey

fn eq(&self, other: &ExtendedPubKey) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ExtendedPubKey) -> bool

This method tests for !=.

impl StructuralEq for ExtendedPubKey

impl StructuralPartialEq for ExtendedPubKey