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Co-authored-by: Alexander Theißen <[email protected]>

frame/contracts/src/wasm/runtime.rs

@@ -2059,7 +2059,7 @@ define_env!(Env, <E: Ext>,
 	},
 
 	// Calculates Ethereum address from the ECDSA compressed public key and stores
-	// it into the supplied buffer
+	// it into the supplied buffer.
 	//
 	// # Parameters
 	//

frame/support/src/crypto/ecdsa.rs

@@ -15,8 +15,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! Simple ECDSA secp256k1 API. This is a reduced version of sp_core::crypto::ecdsa to use in
-//! contracts.
+//! Simple ECDSA secp256k1 API. This is a reduced version of `sp_core::crypto::ecdsa` for use in
+//! cases where the performance penalty of doing in-runtime crypto isn't severe. In case this
+//! becomes a performance bottleneck a new host function should be considered.
 use sp_core::crypto::{ByteArray, UncheckedFrom};
 
 /// The ECDSA compressed public key.