1 files changed, 52 insertions, 0 deletions
diff --git a/include/ossl_random.hpp b/include/ossl_random.hpp
new file mode 100644
index 0000000000..2cbec849a9
--- /dev/null
+++ b/include/ossl_random.hpp
@@ -0,0 +1,52 @@
+#pragma once
+
+#include <openssl/rand.h>
+
+#include <iostream>
+#include <limits>
+#include <string>
+
+namespace bmcweb
+{
+
+struct OpenSSLGenerator
+{
+    uint8_t operator()()
+    {
+        uint8_t index = 0;
+        int rc = RAND_bytes(&index, sizeof(index));
+        if (rc != opensslSuccess)
+        {
+            std::cerr << "Cannot get random number\n";
+            err = true;
+        }
+
+        return index;
+    }
+
+    static constexpr uint8_t max()
+    {
+        return std::numeric_limits<uint8_t>::max();
+    }
+    static constexpr uint8_t min()
+    {
+        return std::numeric_limits<uint8_t>::min();
+    }
+
+    bool error() const
+    {
+        return err;
+    }
+
+    // all generators require this variable
+    using result_type = uint8_t;
+
+  private:
+    // RAND_bytes() returns 1 on success, 0 otherwise. -1 if bad function
+    static constexpr int opensslSuccess = 1;
+    bool err = false;
+};
+
+std::string getRandomUUID();
+
+} // namespace bmcweb