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Re-license bitcoin-serai to MIT

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It's pretty basic code, yet would still be quite pleasant to the larger
community.

Also adds documentation.
This commit is contained in:
Luke Parker
2023-01-31 09:28:03 -05:00
parent 86ad947261
commit df75782e54
5 changed files with 52 additions and 20 deletions
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7
coins/bitcoin/src/crypto.rs
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@@ -14,17 +14,19 @@ use bitcoin::XOnlyPublicKey;
use frost::{algorithm::Hram, curve::Secp256k1};
/// Get the x coordinate of a non-infinity, even point.
/// Get the x coordinate of a non-infinity, even point. Panics on invalid input.
pub fn x(key: &ProjectivePoint) -> [u8; 32] {
let encoded = key.to_encoded_point(true);
assert_eq!(encoded.tag(), Tag::CompressedEvenY);
(*encoded.x().expect("point at infinity")).into()
}
/// Convert a non-infinite even point to a XOnlyPublicKey. Panics on invalid input.
pub fn x_only(key: &ProjectivePoint) -> XOnlyPublicKey {
XOnlyPublicKey::from_slice(&x(key)).unwrap()
}
/// Make a point even, returning the even version and the offset required for it to be even.
pub fn make_even(mut key: ProjectivePoint) -> (ProjectivePoint, u64) {
let mut c = 0;
while key.to_encoded_point(true).tag() == Tag::CompressedOddY {
@@ -34,7 +36,8 @@ pub fn make_even(mut key: ProjectivePoint) -> (ProjectivePoint, u64) {
(key, c)
}
#[derive(Clone)]
/// A BIP-340 compatible HRAm for use with the modular-frost Schnorr Algorithm.
#[derive(Clone, Copy, Debug)]
pub struct BitcoinHram {}
lazy_static! {