From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:03 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 vendor/sha1/src/compress.rs | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 vendor/sha1/src/compress.rs

(limited to 'vendor/sha1/src/compress.rs')

diff --git a/vendor/sha1/src/compress.rs b/vendor/sha1/src/compress.rs
new file mode 100644
index 000000000..da4a10a98
--- /dev/null
+++ b/vendor/sha1/src/compress.rs
@@ -0,0 +1,37 @@
+use crate::{Block, BlockSizeUser, Sha1Core};
+use digest::typenum::Unsigned;
+
+cfg_if::cfg_if! {
+    if #[cfg(feature = "force-soft")] {
+        mod soft;
+        use soft::compress as compress_inner;
+    } else if #[cfg(all(feature = "asm", target_arch = "aarch64"))] {
+        mod soft;
+        mod aarch64;
+        use aarch64::compress as compress_inner;
+    } else if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
+        #[cfg(not(feature = "asm"))]
+        mod soft;
+        #[cfg(feature = "asm")]
+        mod soft {
+            pub use sha1_asm::compress;
+        }
+        mod x86;
+        use x86::compress as compress_inner;
+    } else {
+        mod soft;
+        use soft::compress as compress_inner;
+    }
+}
+
+const BLOCK_SIZE: usize = <Sha1Core as BlockSizeUser>::BlockSize::USIZE;
+
+/// SHA-1 compression function
+#[cfg_attr(docsrs, doc(cfg(feature = "compress")))]
+pub fn compress(state: &mut [u32; 5], blocks: &[Block<Sha1Core>]) {
+    // SAFETY: GenericArray<u8, U64> and [u8; 64] have
+    // exactly the same memory layout
+    let blocks: &[[u8; BLOCK_SIZE]] =
+        unsafe { &*(blocks as *const _ as *const [[u8; BLOCK_SIZE]]) };
+    compress_inner(state, blocks);
+}
-- 
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