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use multiscalar_mul for CLSAG (#553)

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* use multiscalar_mul for CLSAG

* use multiscalar_mul for CLSAG signing

* use OnceLock for basepoint precomputation
This commit is contained in:
expiredhotdog
2024-04-12 23:52:56 +00:00
committed by GitHub
parent 33dd412e67
commit db2e8376df
2 changed files with 41 additions and 11 deletions
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14
coins/monero/src/lib.rs
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@@ -14,7 +14,12 @@ use zeroize::{Zeroize, ZeroizeOnDrop};
use sha3::{Digest, Keccak256};
use curve25519_dalek::{constants::ED25519_BASEPOINT_TABLE, scalar::Scalar, edwards::EdwardsPoint};
use curve25519_dalek::{
constants::{ED25519_BASEPOINT_TABLE, ED25519_BASEPOINT_POINT},
scalar::Scalar,
edwards::{EdwardsPoint, VartimeEdwardsPrecomputation},
traits::VartimePrecomputedMultiscalarMul,
};
pub use monero_generators::{H, decompress_point};
@@ -56,6 +61,13 @@ pub(crate) fn INV_EIGHT() -> Scalar {
*INV_EIGHT_CELL.get_or_init(|| Scalar::from(8u8).invert())
}
static BASEPOINT_PRECOMP_CELL: OnceLock<VartimeEdwardsPrecomputation> = OnceLock::new();
#[allow(non_snake_case)]
pub(crate) fn BASEPOINT_PRECOMP() -> &'static VartimeEdwardsPrecomputation {
BASEPOINT_PRECOMP_CELL
.get_or_init(|| VartimeEdwardsPrecomputation::new([ED25519_BASEPOINT_POINT]))
}
/// Monero protocol version.
///
/// v15 is omitted as v15 was simply v14 and v16 being active at the same time, with regards to the