diff --git a/prng.hpp b/prng.hpp
new file mode 100644
index 0000000..95946f7
--- /dev/null
+++ b/prng.hpp
@@ -0,0 +1,16 @@
+#include <openssl/rand.h>
+
+namespace crypto
+{
+
+struct prng
+{
+    static unsigned int rand()
+    {
+        unsigned int v;
+        RAND_bytes(reinterpret_cast<unsigned char*>(&v), sizeof(v));
+        return v;
+    }
+};
+
+} // namespace crypto