feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

substrate/primitives/core/src/hasher.rs

@@ -0,0 +1,58 @@
+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Substrate Blake2b Hasher implementation
+
+pub mod blake2 {
+	use crate::hash::H256;
+	use hash256_std_hasher::Hash256StdHasher;
+	use hash_db::Hasher;
+
+	/// Concrete implementation of Hasher using Blake2b 256-bit hashes
+	#[derive(Debug)]
+	pub struct Blake2Hasher;
+
+	impl Hasher for Blake2Hasher {
+		type Out = H256;
+		type StdHasher = Hash256StdHasher;
+		const LENGTH: usize = 32;
+
+		fn hash(x: &[u8]) -> Self::Out {
+			sp_crypto_hashing::blake2_256(x).into()
+		}
+	}
+}
+
+pub mod keccak {
+	use crate::hash::H256;
+	use hash256_std_hasher::Hash256StdHasher;
+	use hash_db::Hasher;
+
+	/// Concrete implementation of Hasher using Keccak 256-bit hashes
+	#[derive(Debug)]
+	pub struct KeccakHasher;
+
+	impl Hasher for KeccakHasher {
+		type Out = H256;
+		type StdHasher = Hash256StdHasher;
+		const LENGTH: usize = 32;
+
+		fn hash(x: &[u8]) -> Self::Out {
+			sp_crypto_hashing::keccak_256(x).into()
+		}
+	}
+}