From 43a97878ce14b72f0981164f87f2e35e14151312 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 11:22:09 +0200 Subject: Adding upstream version 110.0.1. Signed-off-by: Daniel Baumann --- third_party/rust/sha2/src/sha256.rs | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 third_party/rust/sha2/src/sha256.rs (limited to 'third_party/rust/sha2/src/sha256.rs') diff --git a/third_party/rust/sha2/src/sha256.rs b/third_party/rust/sha2/src/sha256.rs new file mode 100644 index 0000000000..a45331e17a --- /dev/null +++ b/third_party/rust/sha2/src/sha256.rs @@ -0,0 +1,37 @@ +use digest::{generic_array::GenericArray, typenum::U64}; + +cfg_if::cfg_if! { + if #[cfg(feature = "force-soft")] { + mod soft; + use soft::compress; + } else if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] { + #[cfg(not(feature = "asm"))] + mod soft; + #[cfg(feature = "asm")] + mod soft { + pub(crate) use sha2_asm::compress256 as compress; + } + mod x86; + use x86::compress; + } else if #[cfg(all(feature = "asm", target_arch = "aarch64"))] { + mod soft; + mod aarch64; + use aarch64::compress; + } else { + mod soft; + use soft::compress; + } +} + +/// Raw SHA-256 compression function. +/// +/// This is a low-level "hazmat" API which provides direct access to the core +/// functionality of SHA-256. +#[cfg_attr(docsrs, doc(cfg(feature = "compress")))] +pub fn compress256(state: &mut [u32; 8], blocks: &[GenericArray]) { + // SAFETY: GenericArray and [u8; 64] have + // exactly the same memory layout + let p = blocks.as_ptr() as *const [u8; 64]; + let blocks = unsafe { core::slice::from_raw_parts(p, blocks.len()) }; + compress(state, blocks) +} -- cgit v1.2.3