lighthouse-pulse/crypto/bls/src/get_withdrawal_credentials.rs
Paul Hauner b73c497be2 Support multiple BLS implementations (#1335)
## Issue Addressed

NA

## Proposed Changes

- Refactor the `bls` crate to support multiple BLS "backends" (e.g., milagro, blst, etc).
- Removes some duplicate, unused code in `common/rest_types/src/validator.rs`.
- Removes the old "upgrade legacy keypairs" functionality (these were unencrypted keys that haven't been supported for a few testnets, no one should be using them anymore).

## Additional Info

Most of the files changed are just inconsequential changes to function names.

## TODO

- [x] Optimization levels
- [x] Infinity point: https://github.com/supranational/blst/issues/11
- [x] Ensure milagro *and* blst are tested via CI
- [x] What to do with unsafe code?
- [x] Test infinity point in signature sets
2020-07-25 02:03:18 +00:00

15 lines
429 B
Rust

use crate::PublicKey;
use eth2_hashing::hash;
use ssz::Encode;
/// Returns the withdrawal credentials for a given public key.
///
/// Used for submitting deposits to the Eth1 deposit contract.
pub fn get_withdrawal_credentials(pubkey: &PublicKey, prefix_byte: u8) -> Vec<u8> {
let hashed = hash(&pubkey.as_ssz_bytes());
let mut prefixed = vec![prefix_byte];
prefixed.extend_from_slice(&hashed[1..]);
prefixed
}