Switch to the blake2b_simd crate in sp-core-hashing

primitives/core/hashing/Cargo.toml

@@ -13,7 +13,7 @@ documentation = "https://docs.rs/sp-core-hashing"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-blake2 = { version = "0.10.4", default-features = false }
+blake2b_simd = { version = "1.0.1", default-features = false }
 byteorder = { version = "1.3.2", default-features = false }
 digest = { version = "0.10.3", default-features = false }
 sha2 = { version = "0.10.2", default-features = false }
@@ -25,7 +25,7 @@ sp-std = { version = "5.0.0", default-features = false, path = "../../std" }
 default = ["std"]
 std = [
  "digest/std",
- "blake2/std",
+ "blake2b_simd/std",
  "byteorder/std",
  "sha2/std",
  "sha3/std",

primitives/core/hashing/src/lib.rs

@@ -23,34 +23,41 @@
 use core::hash::Hasher;
 
 use byteorder::{ByteOrder, LittleEndian};
-use digest::{
- consts::{U16, U32, U8},
- Digest,
-};
+use digest::Digest;
+
+#[inline(always)]
+fn blake2<const N: usize>(data: &[u8]) -> [u8; N] {
+ blake2b_simd::Params::new()
+ .hash_length(N)
+ .hash(data)
+ .as_bytes()
+ .try_into()
+ .expect("slice is always the necessary length")
+}
 
 /// Do a Blake2 512-bit hash and place result in `dest`.
 pub fn blake2_512_into(data: &[u8], dest: &mut [u8; 64]) {
- dest.copy_from_slice(blake2::Blake2b512::digest(data).as_slice());
+ *dest = blake2(data);
 }
 
 /// Do a Blake2 512-bit hash and return result.
 pub fn blake2_512(data: &[u8]) -> [u8; 64] {
- blake2::Blake2b512::digest(data).into()
+ blake2(data)
 }
 
 /// Do a Blake2 256-bit hash and return result.
 pub fn blake2_256(data: &[u8]) -> [u8; 32] {
- blake2::Blake2b::<U32>::digest(data).into()
+ blake2(data)
 }
 
 /// Do a Blake2 128-bit hash and return result.
 pub fn blake2_128(data: &[u8]) -> [u8; 16] {
- blake2::Blake2b::<U16>::digest(data).into()
+ blake2(data)
 }
 
 /// Do a Blake2 64-bit hash and return result.
 pub fn blake2_64(data: &[u8]) -> [u8; 8] {
- blake2::Blake2b::<U8>::digest(data).into()
+ blake2(data)
 }
 
 /// Do a XX 64-bit hash and place result in `dest`.