Add darwinia's precompiles (#50)

Cargo.toml

@@ -6,4 +6,5 @@ members = [
 	"core/*",
 	"node",
 	"runtime/*",
+	"precompiles/*"
 ]

precompiles/bls12-381/Cargo.toml

@@ -0,0 +1,50 @@
+[package]
+authors     = ["Darwinia Network <[email protected]>"]
+description = "State storage precompiles for EVM pallet."
+edition     = "2021"
+homepage    = "https://darwinia.network"
+license     = "GPL-3.0"
+name        = "darwinia-precompile-bls12-381"
+readme      = "README.md"
+repository  = "https://github.com/darwinia-network/darwinia"
+version     = "6.0.0"
+
+[dependencies]
+# crates.io
+milagro_bls = { default-features = false, git = "https://github.com/darwinia-network/milagro_bls" }
+# frontier
+fp-evm     = { default-features = false, git = "https://github.com/paritytech/frontier", branch = "polkadot-v0.9.30" }
+pallet-evm = { default-features = false, git = "https://github.com/paritytech/frontier", branch = "polkadot-v0.9.30" }
+# moonbeam
+precompile-utils = {default-features = false, git = "https://github.com/darwinia-network/moonbeam.git", branch = "polkadot-v0.9.30" }
+# paritytech
+frame-support = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-std        = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+
+[dev-dependencies]
+# crates.io
+codec       = { package = "parity-scale-codec", version = "3.2" }
+scale-info  = { version = "2.3", features = ["derive"] }
+# moonbeam
+precompile-utils = { git = "https://github.com/darwinia-network/moonbeam.git", branch = "polkadot-v0.9.30", features = [ "testing" ] }
+# paritytech
+frame-system     = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+pallet-balances  = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+pallet-timestamp = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-core          = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-io            = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-runtime       = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+
+[features]
+default = ["std"]
+
+std = [
+	# frontier
+	"fp-evm/std",
+	"pallet-evm/std",
+	# moonbeam
+	"precompile-utils/std",
+	# paritytech
+	# "frame-support/std",
+	"sp-std/std"
+]

precompiles/bls12-381/src/lib.rs

@@ -0,0 +1,60 @@
+// This file is part of Darwinia.
+//
+// Copyright (C) 2018-2022 Darwinia Network
+// SPDX-License-Identifier: GPL-3.0
+//
+// Darwinia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Darwinia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Darwinia. If not, see <https://www.gnu.org/licenses/>.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+// std
+use core::marker::PhantomData;
+// crates.io
+use milagro_bls::{AggregatePublicKey, AggregateSignature, PublicKey, Signature};
+// moonbeam
+use precompile_utils::prelude::*;
+// substrate
+use sp_std::vec::Vec;
+
+pub(crate) const VERIFY_ESTIMATED_COST: u64 = 100_000;
+
+pub struct BLS12381<T>(PhantomData<T>);
+
+#[precompile_utils::precompile]
+impl<Runtime: pallet_evm::Config> BLS12381<Runtime> {
+	#[precompile::public("fast_aggregate_verify(bytes[],bytes,bytes)")]
+	#[precompile::view]
+	fn state_storage_at(
+		handle: &mut impl PrecompileHandle,
+		pubkeys: Vec<UnboundedBytes>,
+		message: UnboundedBytes,
+		signature: UnboundedBytes,
+	) -> EvmResult<bool> {
+		handle.record_cost(VERIFY_ESTIMATED_COST)?;
+
+		let sig =
+			Signature::from_bytes(signature.as_bytes()).map_err(|_| revert("Invalid signature"))?;
+		let agg_sig = AggregateSignature::from_signature(&sig);
+
+		let public_keys: Result<Vec<PublicKey>, _> =
+			pubkeys.into_iter().map(|k| PublicKey::from_bytes(k.as_bytes())).collect();
+		let Ok(keys) = public_keys else {
+            return Err(revert("Invalid pubkeys"));
+        };
+
+		let agg_pub_key =
+			AggregatePublicKey::into_aggregate(&keys).map_err(|_| revert("Invalid aggregate"))?;
+		Ok(agg_sig.fast_aggregate_verify_pre_aggregated(message.as_bytes(), &agg_pub_key))
+	}
+}

precompiles/state-storage/Cargo.toml

@@ -0,0 +1,48 @@
+[package]
+authors     = ["Darwinia Network <[email protected]>"]
+description = "State storage precompiles for EVM pallet."
+edition     = "2021"
+homepage    = "https://darwinia.network"
+license     = "GPL-3.0"
+name        = "darwinia-precompile-state-storage"
+readme      = "README.md"
+repository  = "https://github.com/darwinia-network/darwinia"
+version     = "6.0.0"
+
+[dependencies]
+# frontier
+fp-evm     = { default-features = false, git = "https://github.com/paritytech/frontier", branch = "polkadot-v0.9.30" }
+pallet-evm = { default-features = false, git = "https://github.com/paritytech/frontier", branch = "polkadot-v0.9.30" }
+# moonbeam
+precompile-utils = {default-features = false, git = "https://github.com/darwinia-network/moonbeam.git", branch = "polkadot-v0.9.30" }
+# paritytech
+frame-support = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-std        = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+
+[dev-dependencies]
+# crates.io
+codec       = { package = "parity-scale-codec", version = "3.2" }
+scale-info  = { version = "2.3", features = ["derive"] }
+# moonbeam
+precompile-utils = { git = "https://github.com/darwinia-network/moonbeam.git", branch = "polkadot-v0.9.30", features = [ "testing" ] }
+# paritytech
+frame-system     = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+pallet-balances  = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+pallet-timestamp = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-core          = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-io            = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+sp-runtime       = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.30" }
+
+[features]
+default = ["std"]
+
+std = [
+	# frontier
+	"fp-evm/std",
+	"pallet-evm/std",
+	# moonbeam
+	"precompile-utils/std",
+	# paritytech
+	# "frame-support/std",
+	"sp-std/std"
+]

precompiles/state-storage/src/lib.rs

@@ -0,0 +1,72 @@
+// This file is part of Darwinia.
+//
+// Copyright (C) 2018-2022 Darwinia Network
+// SPDX-License-Identifier: GPL-3.0
+//
+// Darwinia is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Darwinia is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Darwinia. If not, see <https://www.gnu.org/licenses/>.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg(test)]
+mod mock;
+#[cfg(test)]
+mod tests;
+
+// std
+use core::marker::PhantomData;
+// moonbeam
+use precompile_utils::prelude::*;
+// substrate
+use frame_support::{StorageHasher, Twox128};
+
+const PALLET_PREFIX_LENGTH: usize = 16;
+
+pub trait StorageFilterT {
+	fn allow(prefix: &[u8]) -> bool;
+}
+
+pub struct StateStorage<Runtime, Filter> {
+	_marker: PhantomData<(Runtime, Filter)>,
+}
+
+pub struct EthereumStorageFilter;
+impl StorageFilterT for EthereumStorageFilter {
+	fn allow(prefix: &[u8]) -> bool {
+		prefix != Twox128::hash(b"EVM") && prefix != Twox128::hash(b"Ethereum")
+	}
+}
+
+#[precompile_utils::precompile]
+impl<Runtime, Filter> StateStorage<Runtime, Filter>
+where
+	Runtime: pallet_evm::Config,
+	Filter: StorageFilterT,
+{
+	#[precompile::public("state_storage(bytes)")]
+	#[precompile::view]
+	fn state_storage_at(
+		handle: &mut impl PrecompileHandle,
+		key: UnboundedBytes,
+	) -> EvmResult<UnboundedBytes> {
+		handle.record_cost(RuntimeHelper::<Runtime>::db_read_gas_cost())?;
+
+		let bytes = key.as_bytes();
+		if bytes.len() < PALLET_PREFIX_LENGTH || !Filter::allow(&bytes[0..PALLET_PREFIX_LENGTH]) {
+			return Err(revert("Read restriction"));
+		}
+
+		let output = frame_support::storage::unhashed::get_raw(&bytes);
+		Ok(output.unwrap_or_default().as_slice().into())
+	}
+}