SLIP-10: Deterministic key generation

SLIP10 is a specification for implementing HD wallets. It aims at supporting many curves while being compatible with BIP32.

The implementation is based on generic-ec library that provides generic elliptic curve arithmetic. The crate is no_std and no_alloc friendly.

Curves support

Implementation currently does not support ed25519 curve. All other curves are supported: both secp256k1 and secp256r1. In fact, implementation may work with any curve, but only those are covered by the SLIP10 specs.

The crate also re-exports supported curves in supported_curves module (requires enabling a feature), but any other curve implementation will work with the crate.

Features

• std: enables std library support (mainly, it just implements Error trait for the error types)
• curve-secp256k1 and curve-secp256r1 add curve implementation into the crate supported_curves module

Examples

Derive a master key from the seed, and then derive a child key m/1H/10:

use slip_10::supported_curves::Secp256k1;

let seed = b"16-64 bytes of high entropy".as_slice();
let master_key = slip_10::derive_master_key::<Secp256k1>(seed)?;
let master_key_pair = slip_10::ExtendedKeyPair::from(master_key);

let child_key_pair = slip_10::derive_child_key_pair_with_path(
    &master_key_pair,
    [1 + slip_10::H, 10],
);