From 29f0e10411aba79d68fdf80fb0fd67b8b101cfa1 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Wed, 4 Dec 2019 15:37:24 -0500
Subject: [PATCH] Elligator added

---
 build/CMakeLists.txt  |  1 +
 libi2pd/Elligator.cpp | 30 ++++++++++++++++++++++++++++++
 libi2pd/Elligator.h   | 25 +++++++++++++++++++++++++
 3 files changed, 56 insertions(+)
 create mode 100644 libi2pd/Elligator.cpp
 create mode 100644 libi2pd/Elligator.h

diff --git a/build/CMakeLists.txt b/build/CMakeLists.txt
index 949f6a46..a9cf3a83 100644
--- a/build/CMakeLists.txt
+++ b/build/CMakeLists.txt
@@ -82,6 +82,7 @@ set (LIBI2PD_SRC
   "${LIBI2PD_SRC_DIR}/Ed25519.cpp"
   "${LIBI2PD_SRC_DIR}/NTCP2.cpp"
   "${LIBI2PD_SRC_DIR}/Blinding.cpp"
+  "${LIBI2PD_SRC_DIR}/Elligator.cpp"
 )
 
 if (WITH_WEBSOCKETS)
diff --git a/libi2pd/Elligator.cpp b/libi2pd/Elligator.cpp
new file mode 100644
index 00000000..cc49adbf
--- /dev/null
+++ b/libi2pd/Elligator.cpp
@@ -0,0 +1,30 @@
+#include "Elligator.h"
+
+namespace i2p
+{
+namespace crypto
+{
+	Elligator2::Elligator2 ()
+	{
+	}
+
+	Elligator2::~Elligator2 ()
+	{
+	}
+
+	static std::unique_ptr<Elligator2> g_Elligator;
+	std::unique_ptr<Elligator2>& GetElligator ()
+	{
+		if (!g_Elligator)
+		{
+			auto el = new Elligator2();
+			if (!g_Elligator) // make sure it was not created already
+				g_Elligator.reset (el);
+			else
+				delete el;
+		}
+		return g_Elligator;
+	}
+}
+}
+
diff --git a/libi2pd/Elligator.h b/libi2pd/Elligator.h
new file mode 100644
index 00000000..7993ccb9
--- /dev/null
+++ b/libi2pd/Elligator.h
@@ -0,0 +1,25 @@
+#ifndef ELLIGATOR_H__
+#define ELLIGATOR_H__
+
+#include <memory>
+
+namespace i2p
+{
+namespace crypto
+{
+
+	class Elligator2
+	{
+		public:
+
+			Elligator2 ();
+			~Elligator2 ();
+	};
+
+	std::unique_ptr<Elligator2>& GetElligator ();
+}
+}
+
+#endif
+
+