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John Doty 2024-03-08 11:03:01 -08:00
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1
third-party/vendor/siphasher/.cargo-checksum.json vendored Normal file
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{"files":{"COPYING":"306b56d1a86d1ff32cffdf3bd26d809354f7f06bcc8c4c1697fcb5e28aeedb7a","Cargo.toml":"4a13fe4e2662d4cbca295faf32cd0a627856fb6f92d524d04e244c5831e0ebc6","README.md":"908182615a076b76d64a82fd586af00832c23aed7d9ce36f719b96ba1a12138a","src/lib.rs":"48566f61f177488d88e22d2d3c2bdb9a24201658abf5e97f85a3e32d22dc9ce8","src/sip.rs":"b2f0067642100232f78f046167299972ec4e64bf8b9a48d5283ab9e0101e12da","src/sip128.rs":"eccfff86293b02af3e22a087592afcea08995f54c551e9fe0ec087e13d9e6eea","src/tests.rs":"99c299d1951aee4c70cd01bea8baabc151a7b316904e5d31de847807a671eaf5","src/tests128.rs":"227986a432d65be2c947a500209adb7767a376b49d82e448487db6a2215476cc"},"package":"38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"}

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Copyright 2012-2016 The Rust Project Developers.
Copyright 2016-2023 Frank Denis.
Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
<LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
option.

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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
edition = "2018"
name = "siphasher"
version = "0.3.11"
authors = ["Frank Denis <github@pureftpd.org>"]
description = "SipHash-2-4, SipHash-1-3 and 128-bit variants in pure Rust"
homepage = "https://docs.rs/siphasher"
documentation = "https://docs.rs/siphasher"
readme = "README.md"
keywords = [
"crypto",
"hash",
"siphash",
]
categories = [
"algorithms",
"cryptography",
]
license = "MIT/Apache-2.0"
repository = "https://github.com/jedisct1/rust-siphash"
[profile.release]
opt-level = 3
lto = true
panic = "abort"
[dependencies.serde]
version = "1.0"
features = ["derive"]
optional = true
[dependencies.serde_json]
version = "1.0"
optional = true
[features]
default = ["std"]
serde_no_std = ["serde/alloc"]
serde_std = [
"std",
"serde/std",
]
std = []
[badges.travis-ci]
repository = "jedisct1/rust-siphash"

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SipHash implementation for Rust
===============================
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.
Usage
-----
In `Cargo.toml`:
```toml
[dependencies]
siphasher = "0.3"
```
If you want [serde](https://github.com/serde-rs/serde) support, include the feature like this:
```toml
[dependencies]
siphasher = { version = "0.3", features = ["serde"] }
```
64-bit mode:
```rust
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:
```rust
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();
```
[API documentation](https://docs.rs/siphasher/)
-----------------------------------------------
Note
----
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.

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#![cfg_attr(not(test), no_std)]
#![allow(clippy::unreadable_literal)]
#![allow(clippy::cast_lossless)]
#![allow(clippy::many_single_char_names)]
pub mod sip;
pub mod sip128;
#[cfg(test)]
mod tests;
#[cfg(test)]
mod tests128;
#[cfg(any(feature = "serde", feature = "serde_std", feature = "serde_no_std"))]
pub mod reexports {
pub use serde;
#[cfg(feature = "serde_json")]
pub use serde_json;
}
pub mod prelude {
pub use core::hash::Hasher as _;
pub use sip128::Hasher128 as _;
pub use crate::{sip, sip128};
}

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// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! An implementation of SipHash.
use core::cmp;
use core::hash;
use core::hash::Hasher as _;
use core::marker::PhantomData;
use core::mem;
use core::ptr;
use core::u64;
/// An implementation of SipHash 1-3.
///
/// See: <https://www.aumasson.jp/siphash/siphash.pdf>
#[derive(Debug, Clone, Copy, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct SipHasher13 {
hasher: Hasher<Sip13Rounds>,
}
/// An implementation of SipHash 2-4.
///
/// See: <https://www.aumasson.jp/siphash/siphash.pdf>
#[derive(Debug, Clone, Copy, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct SipHasher24 {
hasher: Hasher<Sip24Rounds>,
}
/// An implementation of SipHash 2-4.
///
/// See: <https://www.aumasson.jp/siphash/siphash.pdf>
///
/// SipHash is a general-purpose hashing function: it runs at a good
/// speed (competitive with Spooky and City) and permits strong _keyed_
/// hashing. This lets you key your hashtables from a strong RNG, such as
/// [`rand::os::OsRng`](https://doc.rust-lang.org/rand/rand/os/struct.OsRng.html).
///
/// Although the SipHash algorithm is considered to be generally strong,
/// it is not intended for cryptographic purposes. As such, all
/// cryptographic uses of this implementation are _strongly discouraged_.
#[derive(Debug, Clone, Copy, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct SipHasher(SipHasher24);
#[derive(Debug, Clone, Copy)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
struct Hasher<S: Sip> {
k0: u64,
k1: u64,
length: usize, // how many bytes we've processed
state: State, // hash State
tail: u64, // unprocessed bytes le
ntail: usize, // how many bytes in tail are valid
_marker: PhantomData<S>,
}
#[derive(Debug, Clone, Copy)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
struct State {
// v0, v2 and v1, v3 show up in pairs in the algorithm,
// and simd implementations of SipHash will use vectors
// of v02 and v13. By placing them in this order in the struct,
// the compiler can pick up on just a few simd optimizations by itself.
v0: u64,
v2: u64,
v1: u64,
v3: u64,
}
macro_rules! compress {
($state:expr) => {{
compress!($state.v0, $state.v1, $state.v2, $state.v3)
}};
($v0:expr, $v1:expr, $v2:expr, $v3:expr) => {{
$v0 = $v0.wrapping_add($v1);
$v1 = $v1.rotate_left(13);
$v1 ^= $v0;
$v0 = $v0.rotate_left(32);
$v2 = $v2.wrapping_add($v3);
$v3 = $v3.rotate_left(16);
$v3 ^= $v2;
$v0 = $v0.wrapping_add($v3);
$v3 = $v3.rotate_left(21);
$v3 ^= $v0;
$v2 = $v2.wrapping_add($v1);
$v1 = $v1.rotate_left(17);
$v1 ^= $v2;
$v2 = $v2.rotate_left(32);
}};
}
/// Loads an integer of the desired type from a byte stream, in LE order. Uses
/// `copy_nonoverlapping` to let the compiler generate the most efficient way
/// to load it from a possibly unaligned address.
///
/// Unsafe because: unchecked indexing at `i..i+size_of(int_ty)`
macro_rules! load_int_le {
($buf:expr, $i:expr, $int_ty:ident) => {{
debug_assert!($i + mem::size_of::<$int_ty>() <= $buf.len());
let mut data = 0 as $int_ty;
ptr::copy_nonoverlapping(
$buf.as_ptr().add($i),
&mut data as *mut _ as *mut u8,
mem::size_of::<$int_ty>(),
);
data.to_le()
}};
}
/// Loads a u64 using up to 7 bytes of a byte slice. It looks clumsy but the
/// `copy_nonoverlapping` calls that occur (via `load_int_le!`) all have fixed
/// sizes and avoid calling `memcpy`, which is good for speed.
///
/// Unsafe because: unchecked indexing at start..start+len
#[inline]
unsafe fn u8to64_le(buf: &[u8], start: usize, len: usize) -> u64 {
debug_assert!(len < 8);
let mut i = 0; // current byte index (from LSB) in the output u64
let mut out = 0;
if i + 3 < len {
out = load_int_le!(buf, start + i, u32) as u64;
i += 4;
}
if i + 1 < len {
out |= (load_int_le!(buf, start + i, u16) as u64) << (i * 8);
i += 2
}
if i < len {
out |= (*buf.get_unchecked(start + i) as u64) << (i * 8);
i += 1;
}
debug_assert_eq!(i, len);
out
}
impl SipHasher {
/// Creates a new `SipHasher` with the two initial keys set to 0.
#[inline]
pub fn new() -> SipHasher {
SipHasher::new_with_keys(0, 0)
}
/// Creates a `SipHasher` that is keyed off the provided keys.
#[inline]
pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher {
SipHasher(SipHasher24::new_with_keys(key0, key1))
}
/// Creates a `SipHasher` from a 16 byte key.
pub fn new_with_key(key: &[u8; 16]) -> SipHasher {
let mut b0 = [0u8; 8];
let mut b1 = [0u8; 8];
b0.copy_from_slice(&key[0..8]);
b1.copy_from_slice(&key[8..16]);
let key0 = u64::from_le_bytes(b0);
let key1 = u64::from_le_bytes(b1);
Self::new_with_keys(key0, key1)
}
/// Get the keys used by this hasher
pub fn keys(&self) -> (u64, u64) {
(self.0.hasher.k0, self.0.hasher.k1)
}
/// Get the key used by this hasher as a 16 byte vector
pub fn key(&self) -> [u8; 16] {
let mut bytes = [0u8; 16];
bytes[0..8].copy_from_slice(&self.0.hasher.k0.to_le_bytes());
bytes[8..16].copy_from_slice(&self.0.hasher.k1.to_le_bytes());
bytes
}
/// Hash a byte array - This is the easiest and safest way to use SipHash.
#[inline]
pub fn hash(&self, bytes: &[u8]) -> u64 {
let mut hasher = self.0.hasher;
hasher.write(bytes);
hasher.finish()
}
}
impl SipHasher13 {
/// Creates a new `SipHasher13` with the two initial keys set to 0.
#[inline]
pub fn new() -> SipHasher13 {
SipHasher13::new_with_keys(0, 0)
}
/// Creates a `SipHasher13` that is keyed off the provided keys.
#[inline]
pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher13 {
SipHasher13 {
hasher: Hasher::new_with_keys(key0, key1),
}
}
/// Creates a `SipHasher13` from a 16 byte key.
pub fn new_with_key(key: &[u8; 16]) -> SipHasher13 {
let mut b0 = [0u8; 8];
let mut b1 = [0u8; 8];
b0.copy_from_slice(&key[0..8]);
b1.copy_from_slice(&key[8..16]);
let key0 = u64::from_le_bytes(b0);
let key1 = u64::from_le_bytes(b1);
Self::new_with_keys(key0, key1)
}
/// Get the keys used by this hasher
pub fn keys(&self) -> (u64, u64) {
(self.hasher.k0, self.hasher.k1)
}
/// Get the key used by this hasher as a 16 byte vector
pub fn key(&self) -> [u8; 16] {
let mut bytes = [0u8; 16];
bytes[0..8].copy_from_slice(&self.hasher.k0.to_le_bytes());
bytes[8..16].copy_from_slice(&self.hasher.k1.to_le_bytes());
bytes
}
/// Hash a byte array - This is the easiest and safest way to use SipHash.
#[inline]
pub fn hash(&self, bytes: &[u8]) -> u64 {
let mut hasher = self.hasher;
hasher.write(bytes);
hasher.finish()
}
}
impl SipHasher24 {
/// Creates a new `SipHasher24` with the two initial keys set to 0.
#[inline]
pub fn new() -> SipHasher24 {
SipHasher24::new_with_keys(0, 0)
}
/// Creates a `SipHasher24` that is keyed off the provided keys.
#[inline]
pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher24 {
SipHasher24 {
hasher: Hasher::new_with_keys(key0, key1),
}
}
/// Creates a `SipHasher24` from a 16 byte key.
pub fn new_with_key(key: &[u8; 16]) -> SipHasher24 {
let mut b0 = [0u8; 8];
let mut b1 = [0u8; 8];
b0.copy_from_slice(&key[0..8]);
b1.copy_from_slice(&key[8..16]);
let key0 = u64::from_le_bytes(b0);
let key1 = u64::from_le_bytes(b1);
Self::new_with_keys(key0, key1)
}
/// Get the keys used by this hasher
pub fn keys(&self) -> (u64, u64) {
(self.hasher.k0, self.hasher.k1)
}
/// Get the key used by this hasher as a 16 byte vector
pub fn key(&self) -> [u8; 16] {
let mut bytes = [0u8; 16];
bytes[0..8].copy_from_slice(&self.hasher.k0.to_le_bytes());
bytes[8..16].copy_from_slice(&self.hasher.k1.to_le_bytes());
bytes
}
/// Hash a byte array - This is the easiest and safest way to use SipHash.
#[inline]
pub fn hash(&self, bytes: &[u8]) -> u64 {
let mut hasher = self.hasher;
hasher.write(bytes);
hasher.finish()
}
}
impl<S: Sip> Hasher<S> {
#[inline]
fn new_with_keys(key0: u64, key1: u64) -> Hasher<S> {
let mut state = Hasher {
k0: key0,
k1: key1,
length: 0,
state: State {
v0: 0,
v1: 0,
v2: 0,
v3: 0,
},
tail: 0,
ntail: 0,
_marker: PhantomData,
};
state.reset();
state
}
#[inline]
fn reset(&mut self) {
self.length = 0;
self.state.v0 = self.k0 ^ 0x736f6d6570736575;
self.state.v1 = self.k1 ^ 0x646f72616e646f6d;
self.state.v2 = self.k0 ^ 0x6c7967656e657261;
self.state.v3 = self.k1 ^ 0x7465646279746573;
self.ntail = 0;
}
// A specialized write function for values with size <= 8.
//
// The hashing of multi-byte integers depends on endianness. E.g.:
// - little-endian: `write_u32(0xDDCCBBAA)` == `write([0xAA, 0xBB, 0xCC, 0xDD])`
// - big-endian: `write_u32(0xDDCCBBAA)` == `write([0xDD, 0xCC, 0xBB, 0xAA])`
//
// This function does the right thing for little-endian hardware. On
// big-endian hardware `x` must be byte-swapped first to give the right
// behaviour. After any byte-swapping, the input must be zero-extended to
// 64-bits. The caller is responsible for the byte-swapping and
// zero-extension.
#[inline]
fn short_write<T>(&mut self, _x: T, x: u64) {
let size = mem::size_of::<T>();
self.length += size;
// The original number must be zero-extended, not sign-extended.
debug_assert!(if size < 8 { x >> (8 * size) == 0 } else { true });
// The number of bytes needed to fill `self.tail`.
let needed = 8 - self.ntail;
self.tail |= x << (8 * self.ntail);
if size < needed {
self.ntail += size;
return;
}
// `self.tail` is full, process it.
self.state.v3 ^= self.tail;
S::c_rounds(&mut self.state);
self.state.v0 ^= self.tail;
self.ntail = size - needed;
self.tail = if needed < 8 { x >> (8 * needed) } else { 0 };
}
}
impl hash::Hasher for SipHasher {
#[inline]
fn write(&mut self, msg: &[u8]) {
self.0.write(msg)
}
#[inline]
fn finish(&self) -> u64 {
self.0.finish()
}
#[inline]
fn write_usize(&mut self, i: usize) {
self.0.write_usize(i);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.0.write_u8(i);
}
#[inline]
fn write_u16(&mut self, i: u16) {
self.0.write_u16(i);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.0.write_u32(i);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.0.write_u64(i);
}
}
impl hash::Hasher for SipHasher13 {
#[inline]
fn write(&mut self, msg: &[u8]) {
self.hasher.write(msg)
}
#[inline]
fn finish(&self) -> u64 {
self.hasher.finish()
}
#[inline]
fn write_usize(&mut self, i: usize) {
self.hasher.write_usize(i);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.hasher.write_u8(i);
}
#[inline]
fn write_u16(&mut self, i: u16) {
self.hasher.write_u16(i);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.hasher.write_u32(i);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.hasher.write_u64(i);
}
}
impl hash::Hasher for SipHasher24 {
#[inline]
fn write(&mut self, msg: &[u8]) {
self.hasher.write(msg)
}
#[inline]
fn finish(&self) -> u64 {
self.hasher.finish()
}
#[inline]
fn write_usize(&mut self, i: usize) {
self.hasher.write_usize(i);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.hasher.write_u8(i);
}
#[inline]
fn write_u16(&mut self, i: u16) {
self.hasher.write_u16(i);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.hasher.write_u32(i);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.hasher.write_u64(i);
}
}
impl<S: Sip> hash::Hasher for Hasher<S> {
#[inline]
fn write_usize(&mut self, i: usize) {
self.short_write(i, i.to_le() as u64);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.short_write(i, i as u64);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.short_write(i, i.to_le() as u64);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.short_write(i, i.to_le());
}
#[inline]
fn write(&mut self, msg: &[u8]) {
let length = msg.len();
self.length += length;
let mut needed = 0;
if self.ntail != 0 {
needed = 8 - self.ntail;
self.tail |= unsafe { u8to64_le(msg, 0, cmp::min(length, needed)) } << (8 * self.ntail);
if length < needed {
self.ntail += length;
return;
} else {
self.state.v3 ^= self.tail;
S::c_rounds(&mut self.state);
self.state.v0 ^= self.tail;
self.ntail = 0;
}
}
// Buffered tail is now flushed, process new input.
let len = length - needed;
let left = len & 0x7;
let mut i = needed;
while i < len - left {
let mi = unsafe { load_int_le!(msg, i, u64) };
self.state.v3 ^= mi;
S::c_rounds(&mut self.state);
self.state.v0 ^= mi;
i += 8;
}
self.tail = unsafe { u8to64_le(msg, i, left) };
self.ntail = left;
}
#[inline]
fn finish(&self) -> u64 {
let mut state = self.state;
let b: u64 = ((self.length as u64 & 0xff) << 56) | self.tail;
state.v3 ^= b;
S::c_rounds(&mut state);
state.v0 ^= b;
state.v2 ^= 0xff;
S::d_rounds(&mut state);
state.v0 ^ state.v1 ^ state.v2 ^ state.v3
}
}
impl<S: Sip> Default for Hasher<S> {
/// Creates a `Hasher<S>` with the two initial keys set to 0.
#[inline]
fn default() -> Hasher<S> {
Hasher::new_with_keys(0, 0)
}
}
#[doc(hidden)]
trait Sip {
fn c_rounds(_: &mut State);
fn d_rounds(_: &mut State);
}
#[derive(Debug, Clone, Copy, Default)]
struct Sip13Rounds;
impl Sip for Sip13Rounds {
#[inline]
fn c_rounds(state: &mut State) {
compress!(state);
}
#[inline]
fn d_rounds(state: &mut State) {
compress!(state);
compress!(state);
compress!(state);
}
}
#[derive(Debug, Clone, Copy, Default)]
struct Sip24Rounds;
impl Sip for Sip24Rounds {
#[inline]
fn c_rounds(state: &mut State) {
compress!(state);
compress!(state);
}
#[inline]
fn d_rounds(state: &mut State) {
compress!(state);
compress!(state);
compress!(state);
compress!(state);
}
}

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@ -0,0 +1,696 @@
// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! An implementation of SipHash with a 128-bit output.
use core::cmp;
use core::hash;
use core::hash::Hasher as _;
use core::marker::PhantomData;
use core::mem;
use core::ptr;
use core::u64;
/// A 128-bit (2x64) hash output
#[derive(Debug, Clone, Copy, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct Hash128 {
pub h1: u64,
pub h2: u64,
}
impl From<u128> for Hash128 {
fn from(v: u128) -> Self {
Hash128 {
h1: v as u64,
h2: (v >> 64) as u64,
}
}
}
impl From<Hash128> for u128 {
fn from(h: Hash128) -> u128 {
(h.h1 as u128) | ((h.h2 as u128) << 64)
}
}
/// An implementation of SipHash128 1-3.
#[derive(Debug, Clone, Copy, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct SipHasher13 {
hasher: Hasher<Sip13Rounds>,
}
/// An implementation of SipHash128 2-4.
#[derive(Debug, Clone, Copy, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct SipHasher24 {
hasher: Hasher<Sip24Rounds>,
}
/// An implementation of SipHash128 2-4.
///
/// SipHash is a general-purpose hashing function: it runs at a good
/// speed (competitive with Spooky and City) and permits strong _keyed_
/// hashing. This lets you key your hashtables from a strong RNG, such as
/// [`rand::os::OsRng`](https://doc.rust-lang.org/rand/rand/os/struct.OsRng.html).
///
/// Although the SipHash algorithm is considered to be generally strong,
/// it is not intended for cryptographic purposes. As such, all
/// cryptographic uses of this implementation are _strongly discouraged_.
#[derive(Debug, Clone, Copy, Default)]
pub struct SipHasher(SipHasher24);
#[derive(Debug, Copy)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
struct Hasher<S: Sip> {
k0: u64,
k1: u64,
length: usize, // how many bytes we've processed
state: State, // hash State
tail: u64, // unprocessed bytes le
ntail: usize, // how many bytes in tail are valid
_marker: PhantomData<S>,
}
#[derive(Debug, Clone, Copy)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
struct State {
// v0, v2 and v1, v3 show up in pairs in the algorithm,
// and simd implementations of SipHash will use vectors
// of v02 and v13. By placing them in this order in the struct,
// the compiler can pick up on just a few simd optimizations by itself.
v0: u64,
v2: u64,
v1: u64,
v3: u64,
}
macro_rules! compress {
($state:expr) => {{
compress!($state.v0, $state.v1, $state.v2, $state.v3)
}};
($v0:expr, $v1:expr, $v2:expr, $v3:expr) => {{
$v0 = $v0.wrapping_add($v1);
$v1 = $v1.rotate_left(13);
$v1 ^= $v0;
$v0 = $v0.rotate_left(32);
$v2 = $v2.wrapping_add($v3);
$v3 = $v3.rotate_left(16);
$v3 ^= $v2;
$v0 = $v0.wrapping_add($v3);
$v3 = $v3.rotate_left(21);
$v3 ^= $v0;
$v2 = $v2.wrapping_add($v1);
$v1 = $v1.rotate_left(17);
$v1 ^= $v2;
$v2 = $v2.rotate_left(32);
}};
}
/// Loads an integer of the desired type from a byte stream, in LE order. Uses
/// `copy_nonoverlapping` to let the compiler generate the most efficient way
/// to load it from a possibly unaligned address.
///
/// Unsafe because: unchecked indexing at `i..i+size_of(int_ty)`
macro_rules! load_int_le {
($buf:expr, $i:expr, $int_ty:ident) => {{
debug_assert!($i + mem::size_of::<$int_ty>() <= $buf.len());
let mut data = 0 as $int_ty;
ptr::copy_nonoverlapping(
$buf.as_ptr().add($i),
&mut data as *mut _ as *mut u8,
mem::size_of::<$int_ty>(),
);
data.to_le()
}};
}
/// Loads a u64 using up to 7 bytes of a byte slice. It looks clumsy but the
/// `copy_nonoverlapping` calls that occur (via `load_int_le!`) all have fixed
/// sizes and avoid calling `memcpy`, which is good for speed.
///
/// Unsafe because: unchecked indexing at start..start+len
#[inline]
unsafe fn u8to64_le(buf: &[u8], start: usize, len: usize) -> u64 {
debug_assert!(len < 8);
let mut i = 0; // current byte index (from LSB) in the output u64
let mut out = 0;
if i + 3 < len {
out = load_int_le!(buf, start + i, u32) as u64;
i += 4;
}
if i + 1 < len {
out |= (load_int_le!(buf, start + i, u16) as u64) << (i * 8);
i += 2
}
if i < len {
out |= (*buf.get_unchecked(start + i) as u64) << (i * 8);
i += 1;
}
debug_assert_eq!(i, len);
out
}
pub trait Hasher128 {
/// Return a 128-bit hash
fn finish128(&self) -> Hash128;
}
impl SipHasher {
/// Creates a new `SipHasher` with the two initial keys set to 0.
#[inline]
pub fn new() -> SipHasher {
SipHasher::new_with_keys(0, 0)
}
/// Creates a `SipHasher` that is keyed off the provided keys.
#[inline]
pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher {
SipHasher(SipHasher24::new_with_keys(key0, key1))
}
/// Creates a `SipHasher` from a 16 byte key.
pub fn new_with_key(key: &[u8; 16]) -> SipHasher {
let mut b0 = [0u8; 8];
let mut b1 = [0u8; 8];
b0.copy_from_slice(&key[0..8]);
b1.copy_from_slice(&key[8..16]);
let key0 = u64::from_le_bytes(b0);
let key1 = u64::from_le_bytes(b1);
Self::new_with_keys(key0, key1)
}
/// Get the keys used by this hasher
pub fn keys(&self) -> (u64, u64) {
(self.0.hasher.k0, self.0.hasher.k1)
}
/// Get the key used by this hasher as a 16 byte vector
pub fn key(&self) -> [u8; 16] {
let mut bytes = [0u8; 16];
bytes[0..8].copy_from_slice(&self.0.hasher.k0.to_le_bytes());
bytes[8..16].copy_from_slice(&self.0.hasher.k1.to_le_bytes());
bytes
}
/// Hash a byte array - This is the easiest and safest way to use SipHash.
#[inline]
pub fn hash(&self, bytes: &[u8]) -> Hash128 {
let mut hasher = self.0.hasher;
hasher.write(bytes);
hasher.finish128()
}
}
impl Hasher128 for SipHasher {
/// Return a 128-bit hash
#[inline]
fn finish128(&self) -> Hash128 {
self.0.finish128()
}
}
impl SipHasher13 {
/// Creates a new `SipHasher13` with the two initial keys set to 0.
#[inline]
pub fn new() -> SipHasher13 {
SipHasher13::new_with_keys(0, 0)
}
/// Creates a `SipHasher13` that is keyed off the provided keys.
#[inline]
pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher13 {
SipHasher13 {
hasher: Hasher::new_with_keys(key0, key1),
}
}
/// Creates a `SipHasher13` from a 16 byte key.
pub fn new_with_key(key: &[u8; 16]) -> SipHasher13 {
let mut b0 = [0u8; 8];
let mut b1 = [0u8; 8];
b0.copy_from_slice(&key[0..8]);
b1.copy_from_slice(&key[8..16]);
let key0 = u64::from_le_bytes(b0);
let key1 = u64::from_le_bytes(b1);
Self::new_with_keys(key0, key1)
}
/// Get the keys used by this hasher
pub fn keys(&self) -> (u64, u64) {
(self.hasher.k0, self.hasher.k1)
}
/// Get the key used by this hasher as a 16 byte vector
pub fn key(&self) -> [u8; 16] {
let mut bytes = [0u8; 16];
bytes[0..8].copy_from_slice(&self.hasher.k0.to_le_bytes());
bytes[8..16].copy_from_slice(&self.hasher.k1.to_le_bytes());
bytes
}
/// Hash a byte array - This is the easiest and safest way to use SipHash.
#[inline]
pub fn hash(&self, bytes: &[u8]) -> Hash128 {
let mut hasher = self.hasher;
hasher.write(bytes);
hasher.finish128()
}
}
impl Hasher128 for SipHasher13 {
/// Return a 128-bit hash
#[inline]
fn finish128(&self) -> Hash128 {
self.hasher.finish128()
}
}
impl SipHasher24 {
/// Creates a new `SipHasher24` with the two initial keys set to 0.
#[inline]
pub fn new() -> SipHasher24 {
SipHasher24::new_with_keys(0, 0)
}
/// Creates a `SipHasher24` that is keyed off the provided keys.
#[inline]
pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher24 {
SipHasher24 {
hasher: Hasher::new_with_keys(key0, key1),
}
}
/// Creates a `SipHasher24` from a 16 byte key.
pub fn new_with_key(key: &[u8; 16]) -> SipHasher24 {
let mut b0 = [0u8; 8];
let mut b1 = [0u8; 8];
b0.copy_from_slice(&key[0..8]);
b1.copy_from_slice(&key[8..16]);
let key0 = u64::from_le_bytes(b0);
let key1 = u64::from_le_bytes(b1);
Self::new_with_keys(key0, key1)
}
/// Get the keys used by this hasher
pub fn keys(&self) -> (u64, u64) {
(self.hasher.k0, self.hasher.k1)
}
/// Get the key used by this hasher as a 16 byte vector
pub fn key(&self) -> [u8; 16] {
let mut bytes = [0u8; 16];
bytes[0..8].copy_from_slice(&self.hasher.k0.to_le_bytes());
bytes[8..16].copy_from_slice(&self.hasher.k1.to_le_bytes());
bytes
}
/// Hash a byte array - This is the easiest and safest way to use SipHash.
#[inline]
pub fn hash(&self, bytes: &[u8]) -> Hash128 {
let mut hasher = self.hasher;
hasher.write(bytes);
hasher.finish128()
}
}
impl Hasher128 for SipHasher24 {
/// Return a 128-bit hash
#[inline]
fn finish128(&self) -> Hash128 {
self.hasher.finish128()
}
}
impl<S: Sip> Hasher<S> {
#[inline]
fn new_with_keys(key0: u64, key1: u64) -> Hasher<S> {
let mut state = Hasher {
k0: key0,
k1: key1,
length: 0,
state: State {
v0: 0,
v1: 0xee,
v2: 0,
v3: 0,
},
tail: 0,
ntail: 0,
_marker: PhantomData,
};
state.reset();
state
}
#[inline]
fn reset(&mut self) {
self.length = 0;
self.state.v0 = self.k0 ^ 0x736f6d6570736575;
self.state.v1 = self.k1 ^ 0x646f72616e646f83;
self.state.v2 = self.k0 ^ 0x6c7967656e657261;
self.state.v3 = self.k1 ^ 0x7465646279746573;
self.ntail = 0;
}
// A specialized write function for values with size <= 8.
//
// The hashing of multi-byte integers depends on endianness. E.g.:
// - little-endian: `write_u32(0xDDCCBBAA)` == `write([0xAA, 0xBB, 0xCC, 0xDD])`
// - big-endian: `write_u32(0xDDCCBBAA)` == `write([0xDD, 0xCC, 0xBB, 0xAA])`
//
// This function does the right thing for little-endian hardware. On
// big-endian hardware `x` must be byte-swapped first to give the right
// behaviour. After any byte-swapping, the input must be zero-extended to
// 64-bits. The caller is responsible for the byte-swapping and
// zero-extension.
#[inline]
fn short_write<T>(&mut self, _x: T, x: u64) {
let size = mem::size_of::<T>();
self.length += size;
// The original number must be zero-extended, not sign-extended.
debug_assert!(if size < 8 { x >> (8 * size) == 0 } else { true });
// The number of bytes needed to fill `self.tail`.
let needed = 8 - self.ntail;
self.tail |= x << (8 * self.ntail);
if size < needed {
self.ntail += size;
return;
}
// `self.tail` is full, process it.
self.state.v3 ^= self.tail;
S::c_rounds(&mut self.state);
self.state.v0 ^= self.tail;
self.ntail = size - needed;
self.tail = if needed < 8 { x >> (8 * needed) } else { 0 };
}
}
impl<S: Sip> Hasher<S> {
#[inline]
pub fn finish128(&self) -> Hash128 {
let mut state = self.state;
let b: u64 = ((self.length as u64 & 0xff) << 56) | self.tail;
state.v3 ^= b;
S::c_rounds(&mut state);
state.v0 ^= b;
state.v2 ^= 0xee;
S::d_rounds(&mut state);
let h1 = state.v0 ^ state.v1 ^ state.v2 ^ state.v3;
state.v1 ^= 0xdd;
S::d_rounds(&mut state);
let h2 = state.v0 ^ state.v1 ^ state.v2 ^ state.v3;
Hash128 { h1, h2 }
}
}
impl hash::Hasher for SipHasher {
#[inline]
fn write(&mut self, msg: &[u8]) {
self.0.write(msg)
}
#[inline]
fn finish(&self) -> u64 {
self.0.finish()
}
#[inline]
fn write_usize(&mut self, i: usize) {
self.0.write_usize(i);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.0.write_u8(i);
}
#[inline]
fn write_u16(&mut self, i: u16) {
self.0.write_u16(i);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.0.write_u32(i);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.0.write_u64(i);
}
}
impl hash::Hasher for SipHasher13 {
#[inline]
fn write(&mut self, msg: &[u8]) {
self.hasher.write(msg)
}
#[inline]
fn finish(&self) -> u64 {
self.hasher.finish()
}
#[inline]
fn write_usize(&mut self, i: usize) {
self.hasher.write_usize(i);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.hasher.write_u8(i);
}
#[inline]
fn write_u16(&mut self, i: u16) {
self.hasher.write_u16(i);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.hasher.write_u32(i);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.hasher.write_u64(i);
}
}
impl hash::Hasher for SipHasher24 {
#[inline]
fn write(&mut self, msg: &[u8]) {
self.hasher.write(msg)
}
#[inline]
fn finish(&self) -> u64 {
self.hasher.finish()
}
#[inline]
fn write_usize(&mut self, i: usize) {
self.hasher.write_usize(i);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.hasher.write_u8(i);
}
#[inline]
fn write_u16(&mut self, i: u16) {
self.hasher.write_u16(i);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.hasher.write_u32(i);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.hasher.write_u64(i);
}
}
impl<S: Sip> hash::Hasher for Hasher<S> {
#[inline]
fn write_usize(&mut self, i: usize) {
self.short_write(i, i.to_le() as u64);
}
#[inline]
fn write_u8(&mut self, i: u8) {
self.short_write(i, i as u64);
}
#[inline]
fn write_u32(&mut self, i: u32) {
self.short_write(i, i.to_le() as u64);
}
#[inline]
fn write_u64(&mut self, i: u64) {
self.short_write(i, i.to_le());
}
#[inline]
fn write(&mut self, msg: &[u8]) {
let length = msg.len();
self.length += length;
let mut needed = 0;
if self.ntail != 0 {
needed = 8 - self.ntail;
self.tail |= unsafe { u8to64_le(msg, 0, cmp::min(length, needed)) } << (8 * self.ntail);
if length < needed {
self.ntail += length;
return;
} else {
self.state.v3 ^= self.tail;
S::c_rounds(&mut self.state);
self.state.v0 ^= self.tail;
self.ntail = 0;
}
}
// Buffered tail is now flushed, process new input.
let len = length - needed;
let left = len & 0x7;
let mut i = needed;
while i < len - left {
let mi = unsafe { load_int_le!(msg, i, u64) };
self.state.v3 ^= mi;
S::c_rounds(&mut self.state);
self.state.v0 ^= mi;
i += 8;
}
self.tail = unsafe { u8to64_le(msg, i, left) };
self.ntail = left;
}
#[inline]
fn finish(&self) -> u64 {
self.finish128().h2
}
}
impl<S: Sip> Clone for Hasher<S> {
#[inline]
fn clone(&self) -> Hasher<S> {
Hasher {
k0: self.k0,
k1: self.k1,
length: self.length,
state: self.state,
tail: self.tail,
ntail: self.ntail,
_marker: self._marker,
}
}
}
impl<S: Sip> Default for Hasher<S> {
/// Creates a `Hasher<S>` with the two initial keys set to 0.
#[inline]
fn default() -> Hasher<S> {
Hasher::new_with_keys(0, 0)
}
}
#[doc(hidden)]
trait Sip {
fn c_rounds(_: &mut State);
fn d_rounds(_: &mut State);
}
#[derive(Debug, Clone, Copy, Default)]
struct Sip13Rounds;
impl Sip for Sip13Rounds {
#[inline]
fn c_rounds(state: &mut State) {
compress!(state);
}
#[inline]
fn d_rounds(state: &mut State) {
compress!(state);
compress!(state);
compress!(state);
}
}
#[derive(Debug, Clone, Copy, Default)]
struct Sip24Rounds;
impl Sip for Sip24Rounds {
#[inline]
fn c_rounds(state: &mut State) {
compress!(state);
compress!(state);
}
#[inline]
fn d_rounds(state: &mut State) {
compress!(state);
compress!(state);
compress!(state);
compress!(state);
}
}
impl Hash128 {
/// Convert into a 16-bytes vector
pub fn as_bytes(&self) -> [u8; 16] {
let mut bytes = [0u8; 16];
let h1 = self.h1.to_le();
let h2 = self.h2.to_le();
unsafe {
ptr::copy_nonoverlapping(&h1 as *const _ as *const u8, bytes.as_mut_ptr(), 8);
ptr::copy_nonoverlapping(&h2 as *const _ as *const u8, bytes.as_mut_ptr().add(8), 8);
}
bytes
}
/// Convert into a `u128`
#[inline]
pub fn as_u128(&self) -> u128 {
let h1 = self.h1.to_le();
let h2 = self.h2.to_le();
h1 as u128 | ((h2 as u128) << 64)
}
/// Convert into `(u64, u64)`
#[inline]
pub fn as_u64(&self) -> (u64, u64) {
let h1 = self.h1.to_le();
let h2 = self.h2.to_le();
(h1, h2)
}
}

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@ -0,0 +1,332 @@
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::hash::{Hash, Hasher};
use super::sip::{SipHasher, SipHasher13, SipHasher24};
// Hash just the bytes of the slice, without length prefix
struct Bytes<'a>(&'a [u8]);
impl<'a> Hash for Bytes<'a> {
#[allow(unused_must_use)]
fn hash<H: Hasher>(&self, state: &mut H) {
let Bytes(v) = *self;
state.write(v);
}
}
macro_rules! u8to64_le {
($buf:expr, $i:expr) => {
$buf[0 + $i] as u64
| ($buf[1 + $i] as u64) << 8
| ($buf[2 + $i] as u64) << 16
| ($buf[3 + $i] as u64) << 24
| ($buf[4 + $i] as u64) << 32
| ($buf[5 + $i] as u64) << 40
| ($buf[6 + $i] as u64) << 48
| ($buf[7 + $i] as u64) << 56
};
($buf:expr, $i:expr, $len:expr) => {{
let mut t = 0;
let mut out = 0;
while t < $len {
out |= ($buf[t + $i] as u64) << t * 8;
t += 1;
}
out
}};
}
fn hash_with<H: Hasher, T: Hash>(mut st: H, x: &T) -> u64 {
x.hash(&mut st);
st.finish()
}
fn hash<T: Hash>(x: &T) -> u64 {
hash_with(SipHasher::new(), x)
}
#[test]
#[allow(unused_must_use)]
fn test_siphash_1_3() {
let vecs: [[u8; 8]; 64] = [
[0xdc, 0xc4, 0x0f, 0x05, 0x58, 0x01, 0xac, 0xab],
[0x93, 0xca, 0x57, 0x7d, 0xf3, 0x9b, 0xf4, 0xc9],
[0x4d, 0xd4, 0xc7, 0x4d, 0x02, 0x9b, 0xcb, 0x82],
[0xfb, 0xf7, 0xdd, 0xe7, 0xb8, 0x0a, 0xf8, 0x8b],
[0x28, 0x83, 0xd3, 0x88, 0x60, 0x57, 0x75, 0xcf],
[0x67, 0x3b, 0x53, 0x49, 0x2f, 0xd5, 0xf9, 0xde],
[0xa7, 0x22, 0x9f, 0xc5, 0x50, 0x2b, 0x0d, 0xc5],
[0x40, 0x11, 0xb1, 0x9b, 0x98, 0x7d, 0x92, 0xd3],
[0x8e, 0x9a, 0x29, 0x8d, 0x11, 0x95, 0x90, 0x36],
[0xe4, 0x3d, 0x06, 0x6c, 0xb3, 0x8e, 0xa4, 0x25],
[0x7f, 0x09, 0xff, 0x92, 0xee, 0x85, 0xde, 0x79],
[0x52, 0xc3, 0x4d, 0xf9, 0xc1, 0x18, 0xc1, 0x70],
[0xa2, 0xd9, 0xb4, 0x57, 0xb1, 0x84, 0xa3, 0x78],
[0xa7, 0xff, 0x29, 0x12, 0x0c, 0x76, 0x6f, 0x30],
[0x34, 0x5d, 0xf9, 0xc0, 0x11, 0xa1, 0x5a, 0x60],
[0x56, 0x99, 0x51, 0x2a, 0x6d, 0xd8, 0x20, 0xd3],
[0x66, 0x8b, 0x90, 0x7d, 0x1a, 0xdd, 0x4f, 0xcc],
[0x0c, 0xd8, 0xdb, 0x63, 0x90, 0x68, 0xf2, 0x9c],
[0x3e, 0xe6, 0x73, 0xb4, 0x9c, 0x38, 0xfc, 0x8f],
[0x1c, 0x7d, 0x29, 0x8d, 0xe5, 0x9d, 0x1f, 0xf2],
[0x40, 0xe0, 0xcc, 0xa6, 0x46, 0x2f, 0xdc, 0xc0],
[0x44, 0xf8, 0x45, 0x2b, 0xfe, 0xab, 0x92, 0xb9],
[0x2e, 0x87, 0x20, 0xa3, 0x9b, 0x7b, 0xfe, 0x7f],
[0x23, 0xc1, 0xe6, 0xda, 0x7f, 0x0e, 0x5a, 0x52],
[0x8c, 0x9c, 0x34, 0x67, 0xb2, 0xae, 0x64, 0xf4],
[0x79, 0x09, 0x5b, 0x70, 0x28, 0x59, 0xcd, 0x45],
[0xa5, 0x13, 0x99, 0xca, 0xe3, 0x35, 0x3e, 0x3a],
[0x35, 0x3b, 0xde, 0x4a, 0x4e, 0xc7, 0x1d, 0xa9],
[0x0d, 0xd0, 0x6c, 0xef, 0x02, 0xed, 0x0b, 0xfb],
[0xf4, 0xe1, 0xb1, 0x4a, 0xb4, 0x3c, 0xd9, 0x88],
[0x63, 0xe6, 0xc5, 0x43, 0xd6, 0x11, 0x0f, 0x54],
[0xbc, 0xd1, 0x21, 0x8c, 0x1f, 0xdd, 0x70, 0x23],
[0x0d, 0xb6, 0xa7, 0x16, 0x6c, 0x7b, 0x15, 0x81],
[0xbf, 0xf9, 0x8f, 0x7a, 0xe5, 0xb9, 0x54, 0x4d],
[0x3e, 0x75, 0x2a, 0x1f, 0x78, 0x12, 0x9f, 0x75],
[0x91, 0x6b, 0x18, 0xbf, 0xbe, 0xa3, 0xa1, 0xce],
[0x06, 0x62, 0xa2, 0xad, 0xd3, 0x08, 0xf5, 0x2c],
[0x57, 0x30, 0xc3, 0xa3, 0x2d, 0x1c, 0x10, 0xb6],
[0xa1, 0x36, 0x3a, 0xae, 0x96, 0x74, 0xf4, 0xb3],
[0x92, 0x83, 0x10, 0x7b, 0x54, 0x57, 0x6b, 0x62],
[0x31, 0x15, 0xe4, 0x99, 0x32, 0x36, 0xd2, 0xc1],
[0x44, 0xd9, 0x1a, 0x3f, 0x92, 0xc1, 0x7c, 0x66],
[0x25, 0x88, 0x13, 0xc8, 0xfe, 0x4f, 0x70, 0x65],
[0xa6, 0x49, 0x89, 0xc2, 0xd1, 0x80, 0xf2, 0x24],
[0x6b, 0x87, 0xf8, 0xfa, 0xed, 0x1c, 0xca, 0xc2],
[0x96, 0x21, 0x04, 0x9f, 0xfc, 0x4b, 0x16, 0xc2],
[0x23, 0xd6, 0xb1, 0x68, 0x93, 0x9c, 0x6e, 0xa1],
[0xfd, 0x14, 0x51, 0x8b, 0x9c, 0x16, 0xfb, 0x49],
[0x46, 0x4c, 0x07, 0xdf, 0xf8, 0x43, 0x31, 0x9f],
[0xb3, 0x86, 0xcc, 0x12, 0x24, 0xaf, 0xfd, 0xc6],
[0x8f, 0x09, 0x52, 0x0a, 0xd1, 0x49, 0xaf, 0x7e],
[0x9a, 0x2f, 0x29, 0x9d, 0x55, 0x13, 0xf3, 0x1c],
[0x12, 0x1f, 0xf4, 0xa2, 0xdd, 0x30, 0x4a, 0xc4],
[0xd0, 0x1e, 0xa7, 0x43, 0x89, 0xe9, 0xfa, 0x36],
[0xe6, 0xbc, 0xf0, 0x73, 0x4c, 0xb3, 0x8f, 0x31],
[0x80, 0xe9, 0xa7, 0x70, 0x36, 0xbf, 0x7a, 0xa2],
[0x75, 0x6d, 0x3c, 0x24, 0xdb, 0xc0, 0xbc, 0xb4],
[0x13, 0x15, 0xb7, 0xfd, 0x52, 0xd8, 0xf8, 0x23],
[0x08, 0x8a, 0x7d, 0xa6, 0x4d, 0x5f, 0x03, 0x8f],
[0x48, 0xf1, 0xe8, 0xb7, 0xe5, 0xd0, 0x9c, 0xd8],
[0xee, 0x44, 0xa6, 0xf7, 0xbc, 0xe6, 0xf4, 0xf6],
[0xf2, 0x37, 0x18, 0x0f, 0xd8, 0x9a, 0xc5, 0xae],
[0xe0, 0x94, 0x66, 0x4b, 0x15, 0xf6, 0xb2, 0xc3],
[0xa8, 0xb3, 0xbb, 0xb7, 0x62, 0x90, 0x19, 0x9d],
];
let k0 = 0x_07_06_05_04_03_02_01_00;
let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08;
let mut buf = Vec::new();
let mut t = 0;
let mut state_inc = SipHasher13::new_with_keys(k0, k1);
while t < 64 {
let vec = u8to64_le!(vecs[t], 0);
let out = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf));
assert_eq!(vec, out);
let full = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf));
let i = state_inc.finish();
assert_eq!(full, i);
assert_eq!(full, vec);
buf.push(t as u8);
Hasher::write(&mut state_inc, &[t as u8]);
t += 1;
}
}
#[test]
#[allow(unused_must_use)]
fn test_siphash_2_4() {
let vecs: [[u8; 8]; 64] = [
[0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72],
[0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74],
[0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d],
[0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85],
[0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf],
[0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18],
[0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb],
[0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab],
[0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93],
[0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e],
[0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a],
[0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4],
[0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75],
[0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14],
[0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7],
[0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1],
[0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f],
[0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69],
[0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b],
[0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb],
[0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe],
[0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0],
[0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93],
[0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8],
[0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8],
[0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc],
[0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17],
[0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f],
[0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde],
[0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6],
[0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad],
[0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32],
[0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71],
[0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7],
[0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12],
[0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15],
[0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31],
[0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02],
[0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca],
[0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a],
[0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e],
[0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad],
[0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18],
[0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4],
[0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9],
[0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9],
[0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb],
[0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0],
[0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6],
[0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7],
[0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee],
[0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1],
[0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a],
[0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81],
[0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f],
[0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24],
[0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7],
[0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea],
[0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60],
[0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66],
[0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c],
[0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f],
[0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5],
[0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95],
];
let k0 = 0x_07_06_05_04_03_02_01_00;
let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08;
let mut buf = Vec::new();
let mut t = 0;
let mut state_inc = SipHasher24::new_with_keys(k0, k1);
while t < 64 {
let vec = u8to64_le!(vecs[t], 0);
let out = hash_with(SipHasher24::new_with_keys(k0, k1), &Bytes(&buf));
assert_eq!(vec, out);
let full = hash_with(SipHasher24::new_with_keys(k0, k1), &Bytes(&buf));
let i = state_inc.finish();
assert_eq!(full, i);
assert_eq!(full, vec);
buf.push(t as u8);
Hasher::write(&mut state_inc, &[t as u8]);
t += 1;
}
}
#[test]
fn test_hash_idempotent() {
let val64 = 0xdead_beef_dead_beef_u64;
assert_eq!(hash(&val64), hash(&val64));
let val32 = 0xdeadbeef_u32;
assert_eq!(hash(&val32), hash(&val32));
}
#[test]
fn test_hash_no_bytes_dropped_64() {
let val = 0xdead_beef_dead_beef_u64;
assert_ne!(hash(&val), hash(&zero_byte(val, 0)));
assert_ne!(hash(&val), hash(&zero_byte(val, 1)));
assert_ne!(hash(&val), hash(&zero_byte(val, 2)));
assert_ne!(hash(&val), hash(&zero_byte(val, 3)));
assert_ne!(hash(&val), hash(&zero_byte(val, 4)));
assert_ne!(hash(&val), hash(&zero_byte(val, 5)));
assert_ne!(hash(&val), hash(&zero_byte(val, 6)));
assert_ne!(hash(&val), hash(&zero_byte(val, 7)));
fn zero_byte(val: u64, byte: usize) -> u64 {
assert!(byte < 8);
val & !(0xff << (byte * 8))
}
}
#[test]
fn test_hash_no_bytes_dropped_32() {
let val = 0xdeadbeef_u32;
assert_ne!(hash(&val), hash(&zero_byte(val, 0)));
assert_ne!(hash(&val), hash(&zero_byte(val, 1)));
assert_ne!(hash(&val), hash(&zero_byte(val, 2)));
assert_ne!(hash(&val), hash(&zero_byte(val, 3)));
fn zero_byte(val: u32, byte: usize) -> u32 {
assert!(byte < 4);
val & !(0xff << (byte * 8))
}
}
#[test]
fn test_hash_no_concat_alias() {
let s = ("aa", "bb");
let t = ("aabb", "");
let u = ("a", "abb");
assert!(s != t && t != u);
assert!(hash(&s) != hash(&t) && hash(&s) != hash(&u));
let u = [1, 0, 0, 0];
let v = (&u[..1], &u[1..3], &u[3..]);
let w = (&u[..], &u[4..4], &u[4..4]);
assert_ne!(v, w);
assert_ne!(hash(&v), hash(&w));
}
#[test]
fn test_hash_simple() {
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);
_ = h;
}
#[test]
fn test_hash_incremental() {
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();
_ = h;
}
#[test]
#[cfg(all(feature = "serde", feature = "serde_json"))]
fn test_hash_serde() {
let val64 = 0xdead_beef_dead_beef_u64;
let hash = hash(&val64);
let serialized = serde_json::to_string(&hash).unwrap();
let deserialized: u64 = serde_json::from_str(&serialized).unwrap();
assert_eq!(hash, deserialized);
}

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third-party/vendor/siphasher/src/tests128.rs vendored Normal file
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@ -0,0 +1,134 @@
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::hash::{Hash, Hasher};
use super::sip128::{Hasher128, SipHasher, SipHasher13, SipHasher24};
// Hash just the bytes of the slice, without length prefix
struct Bytes<'a>(&'a [u8]);
impl<'a> Hash for Bytes<'a> {
#[allow(unused_must_use)]
fn hash<H: Hasher>(&self, state: &mut H) {
let Bytes(v) = *self;
state.write(v);
}
}
fn hash_with<H: Hasher + Hasher128, T: Hash>(mut st: H, x: &T) -> [u8; 16] {
x.hash(&mut st);
st.finish128().as_bytes()
}
fn hash<T: Hash>(x: &T) -> [u8; 16] {
hash_with(SipHasher::new(), x)
}
#[test]
fn test_siphash128_idempotent() {
let val64 = 0xdead_beef_dead_beef_u64;
assert_eq!(hash(&val64), hash(&val64));
let val32 = 0xdeadbeef_u32;
assert_eq!(hash(&val32), hash(&val32));
}
#[test]
#[allow(unused_must_use)]
fn test_siphash128_1_3() {
let vecs: [[u8; 16]; 1] = [[
231, 126, 188, 178, 39, 136, 165, 190, 253, 98, 219, 106, 221, 48, 48, 1,
]];
let k0 = 0x_07_06_05_04_03_02_01_00;
let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08;
let mut buf = Vec::new();
let mut t = 0;
let mut state_inc = SipHasher13::new_with_keys(k0, k1);
while t < 1 {
let vec = vecs[t];
let out = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf));
assert_eq!(vec, out[..]);
let full = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf));
let i = state_inc.finish128().as_bytes();
assert_eq!(full, i);
assert_eq!(full, vec);
buf.push(t as u8);
Hasher::write(&mut state_inc, &[t as u8]);
t += 1;
}
}
#[test]
#[allow(unused_must_use)]
fn test_siphash128_2_4() {
let vecs: [[u8; 16]; 1] = [[
163, 129, 127, 4, 186, 37, 168, 230, 109, 246, 114, 20, 199, 85, 2, 147,
]];
let k0 = 0x_07_06_05_04_03_02_01_00;
let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08;
let mut buf = Vec::new();
let mut t = 0;
let mut state_inc = SipHasher24::new_with_keys(k0, k1);
while t < 1 {
let vec = vecs[t];
let out = hash_with(SipHasher24::new_with_keys(k0, k1), &Bytes(&buf));
assert_eq!(vec, out[..]);
let full = hash_with(SipHasher24::new_with_keys(k0, k1), &Bytes(&buf));
let i = state_inc.finish128().as_bytes();
assert_eq!(full, i);
assert_eq!(full, vec);
buf.push(t as u8);
Hasher::write(&mut state_inc, &[t as u8]);
t += 1;
}
}
#[test]
fn test_siphash128_simple() {
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();
_ = h;
}
#[test]
fn test_siphash128_incremental() {
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();
_ = h;
}
#[test]
#[cfg(all(feature = "serde", feature = "serde_json"))]
fn test_siphash128_serde() {
let val64 = 0xdead_beef_dead_beef_u64;
let hash = hash(&val64);
let serialized = serde_json::to_string(&hash).unwrap();
let deserialized: [u8; 16] = serde_json::from_str(&serialized).unwrap();
assert_eq!(hash, deserialized);
}