sha3 算法优化

running 4 tests
test rust_crypto_sha3_256_input_32_bytes   ... bench:         677 ns/iter (+/- 113) = 47 MB/s
test rust_crypto_sha3_256_input_4096_bytes ... bench:      17,619 ns/iter (+/- 4,174) = 232 MB/s
test tiny_keccak_sha3_256_input_32_bytes   ... bench:         569 ns/iter (+/- 204) = 56 MB/s
test tiny_keccak_sha3_256_input_4096_bytes ... bench:      17,185 ns/iter (+/- 4,575) = 238 MB/

这是2年前情况(tiny-keccack一直没有迭代)，使用最新的sha3库，

修改tiny-keccak下comparison/Cargo.toml文件

% git diff comparison/Cargo.toml 
diff --git a/comparison/Cargo.toml b/comparison/Cargo.toml
index 1b88b6a..b0dd061 100644
--- a/comparison/Cargo.toml
+++ b/comparison/Cargo.toml
@@ -6,4 +6,4 @@ authors = ["debris <marek.kotewicz@gmail.com>"]
 
 [dependencies]
 tiny-keccak = { path = "../", features = ["sha3"] }
-sha3 = "0.8.2"
+sha3 = "0.10.0"

修改sha3.rs

+++ b/comparison/benches/sha3.rs
@@ -40,8 +40,8 @@ fn rust_crypto_sha3_256_input_32_bytes(b: &mut Bencher) {
 
     b.iter(|| {
         let mut sha3 = Sha3_256::default();
-        sha3.input(&data);
-        sha3.result();
+        sha3.update(&data);
+        sha3.finalize();
     });
 }
@@ -53,7 +53,7 @@ fn rust_crypto_sha3_256_input_4096_bytes(b: &mut Bencher) {
 
     b.iter(|| {
         let mut sha3 = Sha3_256::default();
-        sha3.input(&data);
-        sha3.result();
+        sha3.update(&data);
+        sha3.finalize();
     });
 }

 Intel(R) Xeon(R) CPU E5-2666 v3 @ 2.90GHz
 7G Memory

我在跳板机上测试结论

 rustup run nightly cargo bench
running 4 tests
test rust_crypto_sha3_256_input_32_bytes   ... bench:         599 ns/iter (+/- 12) = 53 MB/s
test rust_crypto_sha3_256_input_4096_bytes ... bench:      17,665 ns/iter (+/- 96) = 231 MB/s
test tiny_keccak_sha3_256_input_32_bytes   ... bench:         595 ns/iter (+/- 5) = 53 MB/s
test tiny_keccak_sha3_256_input_4096_bytes ... bench:      17,737 ns/iter (+/- 158) = 230 MB/s

在macOs上

running 4 tests
test rust_crypto_sha3_256_input_32_bytes   ... bench:         441 ns/iter (+/- 47) = 72 MB/s
test rust_crypto_sha3_256_input_4096_bytes ... bench:      12,875 ns/iter (+/- 775) = 318 MB/s
test tiny_keccak_sha3_256_input_32_bytes   ... bench:         452 ns/iter (+/- 23) = 70 MB/s
test tiny_keccak_sha3_256_input_4096_bytes ... bench:      13,073 ns/iter (+/- 880) = 313 MB/s