Merge pull request #66 from gilcu3/master

feat: add support for zeroize in scalar type

Author: Kubuxu

Cargo.toml

@@ -21,6 +21,7 @@ ff = "0.13"
 group = { version = "0.13", features = ["tests"] }
 pairing_lib = { version = "0.23", package = "pairing" }
 subtle = "2.2.1"
+zeroize = "1.8.2"
 
 serde = { version = "1.0", features = ["derive"], optional = true }
 ec-gpu = { version = "0.2.0", optional = true }

src/scalar.rs

@@ -15,6 +15,7 @@ use byte_slice_cast::AsByteSlice;
 use ff::{Field, FieldBits, PrimeField, PrimeFieldBits};
 use rand_core::RngCore;
 use subtle::{Choice, ConditionallySelectable, ConstantTimeEq, CtOption};
+use zeroize::Zeroize;
 
 /// Represents an element of the scalar field $\mathbb{F}_q$ of the BLS12-381 elliptic
 /// curve construction.
@@ -674,6 +675,12 @@ impl Scalar {
     }
 }
 
+impl Zeroize for Scalar {
+    fn zeroize(&mut self) {
+        self.0.l.zeroize();
+    }
+}
+
 #[cfg(feature = "gpu")]
 impl ec_gpu::GpuName for Scalar {
     fn name() -> String {