From f1b1880cf01a8abb6016954e51b46c453c3d6d94 Mon Sep 17 00:00:00 2001
From: Joel Klinghed <the_jk@spawned.biz>
Date: Sun, 19 Oct 2025 00:09:53 +0200
Subject: sha1: Add new module

SHA1 hasher. Needed by websocket support that is coming soon.

Using either libmd or openssl to do the actual hashing.
---
 src/sha1.cc | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/sha1.cc

(limited to 'src/sha1.cc')

diff --git a/src/sha1.cc b/src/sha1.cc
new file mode 100644
index 0000000..5d20ca9
--- /dev/null
+++ b/src/sha1.cc
@@ -0,0 +1,16 @@
+#include "sha1.hh"
+
+namespace sha1 {
+
+std::array<uint8_t, 20> hash(std::span<char const> input) {
+  // std::string and std::string_view -> std::span includes null terminating
+  // byte.
+  if (!input.empty() && input.back() == '\0') {
+    return hash(std::span{reinterpret_cast<uint8_t const*>(input.data()),
+                          input.size() - 1});
+  }
+  return hash(
+      std::span{reinterpret_cast<uint8_t const*>(input.data()), input.size()});
+}
+
+}  // namespace sha1
-- 
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