Move cryptographic hashing procedures to crypto folder. (#2306)

Step towards #1975

As reported
#1975 (comment)
I'd like to encapsulate crypto related stuff in a dedicated folder.

Currently all cryptographic primitive wrappers are all sparsed in
`substrate/core` which contains "misc core" stuff.

To simplify the process, as the first step with this PR I propose to
move the cryptographic hashing there.

The `substrate/crypto` folder was already created to contains `ec-utils`
crate.

Notes:
- rename `sp-core-hashing` to `sp-crypto-hashing`
- rename `sp-core-hashing-proc-macro` to `sp-crypto-hashing-proc-macro`
- As the crates name is changed I took the freedom to restart fresh from
version 0.1.0 for both crates

---------

Co-authored-by: Robert Hambrock <roberthambrock@gmail.com>

Cargo.toml

@@ -287,6 +287,8 @@ members = [
 	"substrate/client/transaction-pool",
 	"substrate/client/transaction-pool/api",
 	"substrate/client/utils",
+	"substrate/deprecated/hashing",
+	"substrate/deprecated/hashing/proc-macro",
 	"substrate/frame",
 	"substrate/frame/alliance",
 	"substrate/frame/asset-conversion",
@@ -432,9 +434,9 @@ members = [
 	"substrate/primitives/consensus/slots",
 	"substrate/primitives/core",
 	"substrate/primitives/core/fuzz",
-	"substrate/primitives/core/hashing",
-	"substrate/primitives/core/hashing/proc-macro",
 	"substrate/primitives/crypto/ec-utils",
+	"substrate/primitives/crypto/hashing",
+	"substrate/primitives/crypto/hashing/proc-macro",
 	"substrate/primitives/database",
 	"substrate/primitives/debug-derive",
 	"substrate/primitives/externalities",

bridges/snowbridge/parachain/pallets/outbound-queue/merkle-tree/Cargo.toml

@@ -26,6 +26,7 @@ hex-literal = { version = "0.4.1" }
 env_logger = "0.9"
 hex = "0.4"
 array-bytes = "4.1"
+sp-crypto-hashing = { path = "../../../../../../substrate/primitives/crypto/hashing" }
 
 [features]
 default = ["std"]

bridges/snowbridge/parachain/pallets/outbound-queue/merkle-tree/src/lib.rs

@@ -325,7 +325,7 @@ where
 mod tests {
 	use super::*;
 	use hex_literal::hex;
-	use sp_core::keccak_256;
+	use sp_crypto_hashing::keccak_256;
 	use sp_runtime::traits::Keccak256;
 
 	fn make_leaves(count: u64) -> Vec<H256> {

cumulus/client/parachain-inherent/Cargo.toml

@@ -15,7 +15,7 @@ tracing = { version = "0.1.37" }
 # Substrate
 sc-client-api = { path = "../../../substrate/client/api" }
 sp-api = { path = "../../../substrate/primitives/api" }
-sp-core = { path = "../../../substrate/primitives/core" }
+sp-crypto-hashing = { path = "../../../substrate/primitives/crypto/hashing" }
 sp-inherents = { path = "../../../substrate/primitives/inherents" }
 sp-runtime = { path = "../../../substrate/primitives/runtime" }
 sp-state-machine = { path = "../../../substrate/primitives/state-machine" }

cumulus/client/parachain-inherent/src/mock.rs

@@ -21,7 +21,7 @@ use cumulus_primitives_core::{
 };
 use cumulus_primitives_parachain_inherent::MessageQueueChain;
 use sc_client_api::{Backend, StorageProvider};
-use sp_core::twox_128;
+use sp_crypto_hashing::twox_128;
 use sp_inherents::{InherentData, InherentDataProvider};
 use sp_runtime::traits::Block;
 use std::collections::BTreeMap;

cumulus/pallets/parachain-system/Cargo.toml

@@ -55,6 +55,7 @@ futures = "0.3.28"
 # Substrate
 sc-client-api = { path = "../../../substrate/client/api" }
 sp-keyring = { path = "../../../substrate/primitives/keyring" }
+sp-crypto-hashing = { path = "../../../substrate/primitives/crypto/hashing" }
 sp-tracing = { path = "../../../substrate/primitives/tracing" }
 sp-version = { path = "../../../substrate/primitives/version" }
 

cumulus/pallets/parachain-system/src/tests.rs

@@ -1125,7 +1125,7 @@ fn upgrade_version_checks_should_work() {
 		ext.register_extension(sp_core::traits::ReadRuntimeVersionExt::new(read_runtime_version));
 		ext.execute_with(|| {
 			let new_code = vec![1, 2, 3, 4];
-			let new_code_hash = H256(sp_core::blake2_256(&new_code));
+			let new_code_hash = H256(sp_crypto_hashing::blake2_256(&new_code));
 
 			#[allow(deprecated)]
 			let _authorize = ParachainSystem::authorize_upgrade(RawOrigin::Root.into(), new_code_hash, true);