| commit | b0bac706ae633a41fa4da3366a3aa172b5371b69 | [log] [tgz] |
|---|---|---|
| author | Chris Wailes <chriswailes@google.com> | Mon May 13 14:22:24 2024 -0700 |
| committer | Chris Wailes <chriswailes@google.com> | Mon May 13 14:22:24 2024 -0700 |
| tree | 11db5a98feb0fd3215bacd92d02fbdca515353a0 | |
| parent | 376dbbaa155a7a17b6ec5aba4d26ca8ee98c3fc6 [diff] |
Ensure crate is compiled with std for panic handler This CL adds a patch to use `extern crate std` to ensure that a panic handler is available when the crate is compiled as a dylib. Test: m rust Bug: 333887339 Change-Id: I05c59773026bb78d207616f5f8d4cfc7215c39c4
This crates implements SipHash-2-4 and SipHash-1-3 in Rust.
It is based on the original implementation from rust-core and exposes the same API.
It also implements SipHash variants returning 128-bit tags.
The sip module implements the standard 64-bit mode, whereas the sip128 module implements the 128-bit mode.
In Cargo.toml:
[dependencies] siphasher = "1"
If you want serde support, include the feature like this:
[dependencies] siphasher = { version = "1", features = ["serde"] }
64-bit mode:
use siphasher::sip::{SipHasher, SipHasher13, SipHasher24}; // one-shot: let array: &[u8] = &[1, 2, 3]; let key: &[u8; 16] = &[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]; let hasher = SipHasher13::new_with_key(key); let h = hasher.hash(array); // incremental: use core::hash::Hasher; let array1: &[u8] = &[1, 2, 3]; let array2: &[u8] = &[4, 5, 6]; let key: &[u8; 16] = &[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]; let mut hasher = SipHasher13::new_with_key(key); hasher.write(array1); hasher.write(array2); let h = hasher.finish();
128-bit mode:
use siphasher::sip128::{Hasher128, SipHasher, SipHasher13, SipHasher24}; // one-shot: let array: &[u8] = &[1, 2, 3]; let key: &[u8; 16] = &[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]; let hasher = SipHasher13::new_with_key(key); let h = hasher.hash(array).as_bytes(); // incremental: use core::hash::Hasher; let array1: &[u8] = &[1, 2, 3]; let array2: &[u8] = &[4, 5, 6]; let key: &[u8; 16] = &[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]; let mut hasher = SipHasher13::new_with_key(key); hasher.write(array1); hasher.write(array2); let h = hasher.finish128().as_bytes();
Due to a confusing and not well documented API, methods from the Hasher trait of the standard library (std::hash::Hasher, core::hash::Hasher) produce non-portable results.
This is not specific to SipHash, and affects all hash functions.
The only safe methods in that trait are write() and finish().
It is thus recommended to use SipHash (and all other hash functions, actually) as documented above.