-----Original Message-----
From: Eric Biggers <ebiggers@kernel.org>
Sent: Saturday, July 12, 2025 6:23 PM
Subject: [PATCH 03/26] lib/crypto: sha1: Add SHA-1 library functions

...

+static void __maybe_unused sha1_blocks_generic(struct sha1_block_state
*state,
+					       const u8 *data, size_t nblocks)
+{
+	u32 workspace[SHA1_WORKSPACE_WORDS];
+
+	do {
+		sha1_transform(state->h, data, workspace);
+		data += SHA1_BLOCK_SIZE;
+	} while (--nblocks);
+
+	memzero_explicit(workspace, sizeof(workspace));
+}

That assumes the caller will never pass nblocks of 0... should that be
checked first?