ebfc20c291
Hopefully it'll be easier to build now. The downside is that it allocates a small vec on each finish, but it's much faster than rust-sha1 anyway, at least on ARM (where I'm running rqbit myself).
91 lines
1.9 KiB
Rust
91 lines
1.9 KiB
Rust
// Wrapper for sha1 libraries.
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// Sha1 computation is the majority of CPU usage of this library.
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// openssl seems 2-3x faster, so using it for now, but
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// leaving the pure-rust impl here too. Maybe someday make them
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// runtime swappable or enabled with a feature.
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#[cfg(feature = "sha1-openssl")]
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pub type Sha1 = Sha1Openssl;
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#[cfg(feature = "sha1-rust")]
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pub type Sha1 = Sha1Rust;
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#[cfg(feature = "sha1-system")]
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pub type Sha1 = Sha1System;
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pub trait ISha1 {
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fn new() -> Self;
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fn update(&mut self, buf: &[u8]);
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fn finish(self) -> [u8; 20];
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}
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#[cfg(feature = "sha1-rust")]
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pub struct Sha1Rust {
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inner: sha1::Sha1,
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}
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#[cfg(feature = "sha1-rust")]
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impl ISha1 for Sha1Rust {
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fn new() -> Self {
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Sha1Rust {
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inner: sha1::Sha1::new(),
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}
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}
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fn update(&mut self, buf: &[u8]) {
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self.inner.update(buf)
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}
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fn finish(self) -> [u8; 20] {
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self.inner.digest().bytes()
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}
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}
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#[cfg(feature = "sha1-openssl")]
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pub struct Sha1Openssl {
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inner: openssl::sha::Sha1,
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}
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#[cfg(feature = "sha1-openssl")]
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impl ISha1 for Sha1Openssl {
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fn new() -> Self {
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Self {
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inner: openssl::sha::Sha1::new(),
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}
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}
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fn update(&mut self, buf: &[u8]) {
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self.inner.update(buf)
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}
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fn finish(self) -> [u8; 20] {
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self.inner.finish()
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}
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}
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#[cfg(feature = "sha1-system")]
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pub struct Sha1System {
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inner: crypto_hash::Hasher,
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}
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#[cfg(feature = "sha1-system")]
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impl ISha1 for Sha1System {
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fn new() -> Self {
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Self {
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inner: crypto_hash::Hasher::new(crypto_hash::Algorithm::SHA1),
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}
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}
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fn update(&mut self, buf: &[u8]) {
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use std::io::Write;
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self.inner.write_all(buf).unwrap();
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}
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fn finish(mut self) -> [u8; 20] {
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let result = self.inner.finish();
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debug_assert_eq!(result.len(), 20);
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let mut result_arr = [0u8; 20];
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result_arr.copy_from_slice(&result);
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result_arr
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}
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}
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