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[pull] master from RustCrypto:master #1

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rpiasetskyi and others added 22 commits September 4, 2022 21:31
try_new creates BlockBuffer or returns an error.
Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Bumps [actions/cache](https://github.com/actions/cache) from 1 to 3.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v1...v3)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.43 to 1.0.47.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](dtolnay/proc-macro2@1.0.43...1.0.47)

---
updated-dependencies:
- dependency-name: proc-macro2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
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These releases misspecified their version requirement for `synstructure`
and are not compatible with releases prior to v0.12.2.

This breaks `-Z minimal-versions` builds for downstream dependencies.

See dalek-cryptography/ed25519-dalek#219
Bumps [typenum](https://github.com/paholg/typenum) from 1.15.0 to 1.16.0.
- [Release notes](https://github.com/paholg/typenum/releases)
- [Changelog](https://github.com/paholg/typenum/blob/main/CHANGELOG.md)
- [Commits](paholg/typenum@v1.15.0...v1.16.0)

---
updated-dependencies:
- dependency-name: typenum
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
There are currently build failures on `master` for `cpufeatures` and
`zeroize`, which test on macOS runners:

https://github.com/RustCrypto/utils/actions/runs/3733690805/jobs/6594187401#step:6:13

  = note: ld: in /Users/runner/.rustup/toolchains/1.40.0-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libgetopts-1988d9ef7be544ff.rlib(rust.metadata.bin), archive member 'rust.metadata.bin' with length 198423 is not mach-o or llvm bitcode file '/Users/runner/.rustup/toolchains/1.40.0-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libgetopts-1988d9ef7be544ff.rlib'

It seems these older rustc versions do not support linking with the
latest macOS compilers.

The build on `stable` works, so we can continue to test macOS, just not
that these two crates are MSRV compatible on macOS.
Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.49 to 1.0.50.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](dtolnay/proc-macro2@1.0.49...1.0.50)

---
updated-dependencies:
- dependency-name: proc-macro2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Replaces the existing API with a `Cmov` trait which is impl'd for all of
the unsigned integer types.

On x86 platforms this adds support for using both EAX and RAX register
operands.

On aarch64 platforms it adds support for using both W0 and X0 register
operands.

Support for `u8` is impl'd generically via upcasting, and support for
`u128` is impl'd generically by splitting the value into two `u64`s and
doing two selections.

Platform-by-platform support is now split into `aarch64`, `x86`, and
`portable` backend modules.
The link to the utils repo should be angle-bracketed to make the rustdoc
linter happy.
This is primarily to unblock #839
tarcieri and others added 30 commits September 6, 2024 06:33
This hopefully allows the docs to generate on docs.rs.

Closes #1106
Removes the previous low-level unsafe API and wraps it up instead in a
safe API which automatically performs runtime CPU feature detection and
RAII guards for enabling DIT and restoring its previous state when done.
This PR also bumps MSRV to 1.81 for `block-buffer`, `block-padding`, `dbl`,
and `inout`, following the MSRV bump in `hybrid-array`.
Dependency on `crypto-common` causes some annoyances as mentioned in
RustCrypto/traits#1662.

Instead of using the sealed `BlockSizes` trait, the new code uses
monomorphization errors to enforce block size correctness. This is
somewhat non-idiomatic, but should be fine in practice since block
buffers are usually used with fixed block sizes. After this change
`BlockSizes` probably can be removed from `crypto-common`.

I decided against vendoring `block-buffer` code into `digest` as was
proposed in the linked issue because `block-buffer` has third-party
users and having a separate crate should make it a bit easier for
reviewers.
Leverages the `error_in_core` feature stabilized in Rust 1.81 to allow
`Error` trait impls in `no_std` contexts.

This was the only dependency on `std`, so this also removes the `std`
feature, which is no longer necessary.
Removes manual rustdoc feature annotations and performs them
automatically
We need to instruct it to build with the `block-padding` feature to
ensure that's properly documented.

This commit re-adds `all-features = true`
Cuts new `-rc.*` releases of the following:

- `block-buffer` v0.11.0-rc.3
- `block-padding` v0.4.0-rc.2
- `dbl` v0.4.0-rc.1
- `inout` v0.2.0-rc.2

These all depend on `hybrid-array` v0.2 (final)
Compiling the crate on non-AArch64 targets results in a compilation
error, so having it in workspace can be problematic on other target
arches.
The check was too conservative and caused false negatives on some
targets. This change follows the `is_x86_feature_detected!` macro (see:
https://docs.rs/crate/std_detect/latest/source/src/detect/os/x86.rs).
Without committed Cargo.lock CI fails for this crate because `libc`
v0.2.164 and later require Rust 1.63, while MSRV for `aarch64-dit` is
set to 1.61.
Previously we were using an empty string for `target_os` to indicate
freestanding targets which is incorrect. We should use `none` instead.
On AArch64, we link the `libc` crate to provide access to system call
wrappers which can query available CPU features from the kernel, since
those calls are protected on that CPU architecture.

We don't need `std` though, and it seems we're inadvertently linking it
on Linux, Android, and macOS.
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