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

Step towards https://github.com/paritytech/polkadot-sdk/issues/1975

As reported
https://github.com/paritytech/polkadot-sdk/issues/1975#issuecomment-1774534225
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>

substrate/frame/support/Cargo.toml

@@ -42,7 +42,7 @@ bitflags = "1.3"
 impl-trait-for-tuples = "0.2.2"
 smallvec = "1.11.0"
 log = { version = "0.4.17", default-features = false }
-sp-core-hashing-proc-macro = { path = "../../primitives/core/hashing/proc-macro" }
+sp-crypto-hashing-proc-macro = { path = "../../primitives/crypto/hashing/proc-macro" }
 k256 = { version = "0.13.1", default-features = false, features = ["ecdsa"] }
 environmental = { version = "1.1.4", default-features = false }
 sp-genesis-builder = { path = "../../primitives/genesis-builder", default-features = false }
@@ -56,6 +56,7 @@ aquamarine = { version = "0.5.0" }
 assert_matches = "1.3.0"
 pretty_assertions = "1.2.1"
 frame-system = { path = "../system" }
+sp-crypto-hashing = { path = "../../primitives/crypto/hashing" }
 
 [features]
 default = ["std"]

substrate/frame/support/procedural/Cargo.toml

@@ -29,14 +29,14 @@ frame-support-procedural-tools = { path = "tools" }
 macro_magic = { version = "0.5.0", features = ["proc_support"] }
 proc-macro-warning = { version = "1.0.0", default-features = false }
 expander = "2.0.0"
-sp-core-hashing = { path = "../../../primitives/core/hashing", default-features = false }
+sp-crypto-hashing = { path = "../../../primitives/crypto/hashing", default-features = false }
 
 [dev-dependencies]
 regex = "1"
 
 [features]
 default = ["std"]
-std = ["sp-core-hashing/std"]
+std = ["sp-crypto-hashing/std"]
 no-metadata-docs = []
 # Generate impl-trait for tuples with the given number of tuples. Will be needed as the number of
 # pallets in a runtime grows. Does increase the compile time!

substrate/frame/support/procedural/src/pallet/parse/helper.rs

@@ -613,7 +613,7 @@ pub fn check_pallet_call_return_type(type_: &syn::Type) -> syn::Result<()> {
 }
 
 pub(crate) fn two128_str(s: &str) -> TokenStream {
-	bytes_to_array(sp_core_hashing::twox_128(s.as_bytes()).into_iter())
+	bytes_to_array(sp_crypto_hashing::twox_128(s.as_bytes()).into_iter())
 }
 
 pub(crate) fn bytes_to_array(bytes: impl IntoIterator<Item = u8>) -> TokenStream {

substrate/frame/support/src/lib.rs

@@ -45,7 +45,7 @@ pub mod __private {
 	pub use scale_info;
 	pub use serde;
 	pub use sp_core::{OpaqueMetadata, Void};
-	pub use sp_core_hashing_proc_macro;
+	pub use sp_crypto_hashing_proc_macro;
 	pub use sp_inherents;
 	#[cfg(feature = "std")]
 	pub use sp_io::TestExternalities;
@@ -330,7 +330,7 @@ macro_rules! parameter_types {
 		impl< $($ty_params),* > $name< $($ty_params),* > {
 			/// Returns the key for this parameter type.
 			pub fn key() -> [u8; 16] {
-				$crate::__private::sp_core_hashing_proc_macro::twox_128!(b":", $name, b":")
+				$crate::__private::sp_crypto_hashing_proc_macro::twox_128!(b":", $name, b":")
 			}
 
 			/// Set the value of this parameter type in the storage.

substrate/frame/support/src/storage/mod.rs

@@ -1712,7 +1712,7 @@ mod test {
 	use bounded_vec::BoundedVec;
 	use frame_support::traits::ConstU32;
 	use generator::StorageValue as _;
-	use sp_core::hashing::twox_128;
+	use sp_crypto_hashing::twox_128;
 	use sp_io::TestExternalities;
 	use weak_bounded_vec::WeakBoundedVec;
 

substrate/frame/support/src/traits/metadata.rs

@@ -302,7 +302,7 @@ pub trait GetStorageVersion {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use sp_core::twox_128;
+	use sp_crypto_hashing::twox_128;
 
 	struct Pallet1;
 	impl PalletInfoAccess for Pallet1 {