ntcp2 crypto added

libi2pd/Poly1305.h

@@ -0,0 +1,28 @@
+/**
+   This code is licensed under the MCGSI Public License
+   Copyright 2018 Jeff Becker
+
+   Kovri go write your own code
+
+ */
+#ifndef LIBI2PD_POLY1305_H
+#define LIBI2PD_POLY1305_H
+#include <cstdint>
+#include <cstring>
+
+namespace i2p
+{
+namespace crypto
+{
+  const std::size_t POLY1305_DIGEST_BYTES = 16;
+  const std::size_t POLY1305_DIGEST_DWORDS = 4;
+  const std::size_t POLY1305_KEY_BYTES = 32;
+  const std::size_t POLY1305_KEY_DWORDS = 8;
+  const std::size_t POLY1305_BLOCK_BYTES = 16;
+
+  void Poly1305HMAC(uint32_t * out, const uint32_t * key, const uint8_t * buf, std::size_t sz);
+  
+}
+}
+
+#endif