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Cargo.toml
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Cargo.toml
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[package]
name = "blake3"
version = "1.5.0"
authors = ["Jack O'Connor <[email protected]>", "Samuel Neves"]
description = "the BLAKE3 hash function"
repository = "https://github.com/BLAKE3-team/BLAKE3"
license = "CC0-1.0 OR Apache-2.0"
documentation = "https://docs.rs/blake3"
readme = "README.md"
edition = "2021"
[features]
default = ["std"]
# The NEON implementation does not participate in dynamic feature detection,
# which is currently x86-only. If "neon" is on, NEON support is assumed. Note
# that AArch64 always supports NEON, but support on ARMv7 varies. The NEON
# implementation uses C intrinsics and requires a C compiler.
neon = []
# This crate uses libstd for std::io trait implementations, and also for
# runtime CPU feature detection. This feature is enabled by default. If you use
# --no-default-features, the only way to use the SIMD implementations in this
# crate is to enable the corresponding instruction sets statically for the
# entire build, with e.g. RUSTFLAGS="-C target-cpu=native".
std = []
# The `rayon` feature (disabled by default, but enabled for docs.rs) adds the
# `update_rayon` and (in combination with `mmap` below) `update_mmap_rayon`
# methods, for multithreaded hashing. However, even if this feature is enabled,
# all other APIs remain single-threaded.
rayon = ["dep:rayon", "std"]
# The `mmap` feature (disabled by default, but enabled for docs.rs) adds the
# `update_mmap` and (in combination with `rayon` above) `update_mmap_rayon`
# helper methods for memory-mapped IO.
mmap = ["std", "dep:memmap2"]
# Implement the zeroize::Zeroize trait for types in this crate.
zeroize = ["dep:zeroize", "arrayvec/zeroize"]
# This crate implements traits from the RustCrypto project, exposed here as the
# "traits-preview" feature. However, these traits aren't stable, and they're
# expected to change in incompatible ways before they reach 1.0. For that
# reason, this crate makes no SemVer guarantees for this feature, and callers
# who use it should expect breaking changes between patch versions of this
# crate. (The "*-preview" feature name follows the conventions of the RustCrypto
# "signature" crate.)
traits-preview = ["digest"]
# ---------- Features below this line are undocumented and unstable. ----------
# The following features are mainly intended for testing and benchmarking, and
# they might change or disappear at any time without a major version bump.
# By default on x86_64, this crate uses Samuel Neves' hand-written assembly
# implementations for SSE4.1, AVX2, and AVX512. (These provide both the best
# runtime performance, and the fastest build times.) And by default on 32-bit
# x86, this crate uses Rust intrinsics implementations for SSE4.1 and AVX2, and
# a C intrinsics implementation for AVX-512. In both cases, if a C compiler is
# not detected, or if AVX-512 support is missing from the detected compiler,
# build.rs automatically falls back to a pure Rust build. This feature forces
# that fallback, for testing purposes. (Note that in CI testing, we set the
# BLAKE3_CI environment variable, which instructs build.rs to error out rather
# than doing an automatic fallback.)
pure = []
# As described above, on x86_64 this crate use assembly implementations by
# default. Enabling the "prefer_intrinsics" feature makes this crate use
# intrinsics implementations on both 32-bit and 64-bit x86, again for testing
# purposes.
prefer_intrinsics = []
# Disable individual instruction sets. CI testing uses these flags to simulate
# different levels of hardware SIMD support. Note that code for the
# corresponding instruction set is still compiled; only detection is disabled.
#
# As noted above, these flags are *for testing only* and are not stable. It's
# possible that some users might find that their particular use case performs
# better if e.g. AVX-512 is disabled, because of issues like CPU downclocking.
# If that comes up, and if disabling the instruction set here at the feature
# level turns out to be the right approach, then we can design a stable
# feature. Until then, we reserve the right to break these features in a patch
# release.
no_sse2 = []
no_sse41 = []
no_avx2 = []
no_avx512 = []
no_neon = []
[package.metadata.docs.rs]
# Document the rayon/mmap methods and the Serialize/Deserialize/Zeroize impls on docs.rs.
features = ["mmap", "rayon", "serde", "zeroize"]
[dependencies]
arrayref = "0.3.7"
arrayvec = { version = "0.7.4", default-features = false }
constant_time_eq = "0.3.0"
cfg-if = "1.0.0"
digest = { version = "0.11.0-pre.8", features = ["mac"], optional = true }
memmap2 = { version = "0.9.4", optional = true }
rayon = { version = "1.8.1", optional = true }
serde = { version = "1", default-features = false, features = [
"derive",
], optional = true }
zeroize = { version = "1", default-features = false, features = [
"zeroize_derive",
], optional = true }
typenum = "1.17.0"
generic-array = "1.0.0"
hybrid-array = "0.2.0-rc.5"
[dev-dependencies]
hmac = "0.13.0-pre.3"
hex = "0.4.3"
page_size = "0.6.0"
rand = "0.9.0-alpha.0"
rand_chacha = "0.9.0-alpha.0"
reference_impl = { path = "./reference_impl" }
tempfile = "3.10.0"
serde_json = "1.0.114"
[build-dependencies]
cc = "1.0.4"