tor_llcrypto/
d.rs

1//! Digests and XOFs used to implement the Tor protocol.
2//!
3//! In various places, for legacy reasons, Tor uses SHA1, SHA2, SHA3,
4//! and SHAKE.  We re-export them all here, in forms implementing the
5//! the [`digest::Digest`] traits.
6//!
7//! Other code should access these digests via the traits in the
8//! [`digest`] crate.
9
10#[cfg(feature = "with-openssl")]
11pub use openssl_compat::Sha1;
12#[cfg(not(feature = "with-openssl"))]
13pub use sha1::Sha1;
14
15pub use sha2::{Sha256, Sha512};
16pub use sha3::{Sha3_256, Shake128, Shake256, Shake256Reader};
17
18/// Compatibility layer between OpenSSL and `digest`
19#[cfg(feature = "with-openssl")]
20mod openssl_compat {
21    use openssl::sha::Sha1 as OpenSslSha1;
22
23    use digest::{FixedOutput, HashMarker, Output, OutputSizeUser, Update};
24
25    /// Wrapper around OpenSSL Sha1 to make it compatible with `digest`
26    #[derive(Default, Clone)]
27    pub struct Sha1(OpenSslSha1);
28
29    impl Update for Sha1 {
30        fn update(&mut self, data: &[u8]) {
31            self.0.update(data);
32        }
33    }
34
35    impl OutputSizeUser for Sha1 {
36        type OutputSize = typenum::consts::U20;
37    }
38
39    impl FixedOutput for Sha1 {
40        fn finalize_into(self, out: &mut Output<Self>) {
41            *out = self.0.finish().into();
42        }
43    }
44
45    impl HashMarker for Sha1 {}
46}
tor_llcrypto/d.rs

tor_llcrypto/
d.rs
