fixup! core/key: fix arbitrary impls

Author: tzemanovic

crates/core/src/key/ed25519.rs

@@ -400,10 +400,7 @@ impl arbitrary::Arbitrary<'_> for PublicKey {
     fn arbitrary(
         u: &mut arbitrary::Unstructured<'_>,
     ) -> arbitrary::Result<Self> {
-        let seed: [u8; 32] = u
-            .bytes(u.len())?
-            .try_into()
-            .map_err(|_| arbitrary::Error::NotEnoughData)?;
+        let seed: [u8; 32] = arbitrary::Arbitrary::arbitrary(u)?;
         let sk = ed25519_consensus::SigningKey::from(seed);
         Ok(Self(sk.verification_key()))
     }
@@ -419,10 +416,7 @@ impl arbitrary::Arbitrary<'_> for Signature {
     fn arbitrary(
         u: &mut arbitrary::Unstructured<'_>,
     ) -> arbitrary::Result<Self> {
-        let seed: [u8; 32] = u
-            .bytes(u.len())?
-            .try_into()
-            .map_err(|_| arbitrary::Error::NotEnoughData)?;
+        let seed: [u8; 32] = arbitrary::Arbitrary::arbitrary(u)?;
         let sk = ed25519_consensus::SigningKey::from(seed);
         Ok(Self(sk.sign(&[0_u8])))
     }

crates/core/src/key/secp256k1.rs

@@ -605,10 +605,7 @@ impl arbitrary::Arbitrary<'_> for PublicKey {
         u: &mut arbitrary::Unstructured<'_>,
     ) -> arbitrary::Result<Self> {
         use rand::SeedableRng;
-        let seed: [u8; 32] = u
-            .bytes(u.len())?
-            .try_into()
-            .map_err(|_| arbitrary::Error::NotEnoughData)?;
+        let seed: [u8; 32] = arbitrary::Arbitrary::arbitrary(u)?;
         Ok(Self(
             k256::SecretKey::random(&mut rand::rngs::StdRng::from_seed(seed))
                 .public_key(),
@@ -627,10 +624,7 @@ impl arbitrary::Arbitrary<'_> for Signature {
         u: &mut arbitrary::Unstructured<'_>,
     ) -> arbitrary::Result<Self> {
         use rand::SeedableRng;
-        let seed: [u8; 32] = u
-            .bytes(u.len())?
-            .try_into()
-            .map_err(|_| arbitrary::Error::NotEnoughData)?;
+        let seed: [u8; 32] = arbitrary::Arbitrary::arbitrary(u)?;
         let sk =
             k256::SecretKey::random(&mut rand::rngs::StdRng::from_seed(seed));
         let sig_key = k256::ecdsa::SigningKey::from(&sk);