From 0ab40dc1ab4e689921da54080b135e1d22b1c586 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Tue, 14 Mar 2017 21:45:23 +0100
Subject: Refactoring louloulibs and cmake

Use OBJECT libraries
Remove the louloulibs directory
Write FOUND variables in the cache
---
 src/utils/sha1.cpp | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 src/utils/sha1.cpp

(limited to 'src/utils/sha1.cpp')

diff --git a/src/utils/sha1.cpp b/src/utils/sha1.cpp
new file mode 100644
index 0000000..b77446e
--- /dev/null
+++ b/src/utils/sha1.cpp
@@ -0,0 +1,32 @@
+#include <utils/sha1.hpp>
+
+#include <biboumi.h>
+
+#ifdef BOTAN_FOUND
+# include <botan/hash.h>
+# include <botan/hex.h>
+#endif
+#ifdef GCRYPT_FOUND
+# include <gcrypt.h>
+# include <vector>
+# include <iomanip>
+# include <sstream>
+#endif
+
+std::string sha1(const std::string& input)
+{
+#ifdef BOTAN_FOUND
+  auto sha1 = Botan::HashFunction::create_or_throw("SHA-1");
+  sha1->update(input);
+  return Botan::hex_encode(sha1->final(), false);
+#endif
+#ifdef GCRYPT_FOUND
+  const auto hash_length = gcry_md_get_algo_dlen(GCRY_MD_SHA1);
+  std::vector<uint8_t> output(hash_length, {});
+  gcry_md_hash_buffer(GCRY_MD_SHA1, output.data(), input.data(), input.size());
+  std::ostringstream digest;
+  for (std::size_t i = 0; i < hash_length; i++)
+    digest << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(output[i]);
+  return digest.str();
+#endif
+}
-- 
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