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#[cfg(not(feature = "fast-sha1"))] mod _impl { use super::Sha1Digest; #[derive(Default, Clone)] pub struct Sha1(sha1::Sha1); impl Sha1 { pub fn update(&mut self, d: &[u8]) { self.0.update(d) } pub fn digest(self) -> Sha1Digest { self.0.digest().bytes() } } } pub type Sha1Digest = [u8; 20]; #[cfg(feature = "fast-sha1")] mod _impl { use super::Sha1Digest; use fastsha1::Digest; #[derive(Default, Clone)] pub struct Sha1(fastsha1::Sha1); impl Sha1 { pub fn update(&mut self, d: &[u8]) { self.0.update(d) } pub fn digest(self) -> Sha1Digest { self.0.finalize().into() } } } pub use _impl::Sha1; pub fn crc32_update(previous_value: u32, bytes: &[u8]) -> u32 { crc::crc32::update(previous_value, &crc::crc32::IEEE_TABLE, bytes) } pub use crc::crc32::checksum_ieee as crc32;