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Implement hash_to_point in Rust

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Closes https://github.com/serai-dex/serai/issues/32.
This commit is contained in:
Luke Parker
2022-07-10 16:11:55 -04:00
parent 6ce506a79d
commit 953a873338
10 changed files with 108 additions and 38 deletions
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17
coins/monero/src/lib.rs
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@@ -98,20 +98,3 @@ pub fn hash(data: &[u8]) -> [u8; 32] {
pub fn hash_to_scalar(data: &[u8]) -> Scalar {
Scalar::from_bytes_mod_order(hash(&data))
}
pub fn hash_to_point(point: &EdwardsPoint) -> EdwardsPoint {
let mut bytes = point.compress().to_bytes();
unsafe {
#[link(name = "wrapper")]
extern "C" {
fn c_hash_to_point(point: *const u8);
}
c_hash_to_point(bytes.as_mut_ptr());
}
CompressedEdwardsY::from_slice(&bytes).decompress().unwrap()
}
pub fn generate_key_image(secret: &Scalar) -> EdwardsPoint {
secret * hash_to_point(&(secret * &ED25519_BASEPOINT_TABLE))
}