moved GOST to separate file

Gost.h

@@ -0,0 +1,47 @@
+#ifndef GOST_H__
+#define GOST_H__
+
+#include <memory>
+#include <openssl/ec.h>
+
+namespace i2p
+{
+namespace crypto
+{
+
+	// ГОСТ Р 34.10
+	
+	enum GOSTR3410ParamSet
+	{
+		eGOSTR3410CryptoProA = 0,   // 1.2.643.2.2.35.1
+		eGOSTR3410CryptoProB,	    // 1.2.643.2.2.35.2
+		eGOSTR3410CryptoProC,	    // 1.2.643.2.2.35.3
+		//eGOSTR3410CryptoProXchA,    // 1.2.643.2.2.36.0
+		//eGOSTR3410CryptoProXchB,	// 1.2.643.2.2.36.1
+		// XchA = A, XchB = C
+		eGOSTR3410NumParamSets
+	};	
+	
+	class GOSTR3410Curve
+	{
+		public:
+
+			GOSTR3410Curve (BIGNUM * a, BIGNUM * b, BIGNUM * p, BIGNUM * q, BIGNUM * x, BIGNUM * y);
+			~GOSTR3410Curve ();			
+
+			EC_POINT * MulP (const BIGNUM * n) const;
+			bool GetXY (const EC_POINT * p, BIGNUM * x, BIGNUM * y) const;
+			EC_POINT * CreatePoint (const BIGNUM * x, const BIGNUM * y) const;
+			void Sign (const BIGNUM * priv, const BIGNUM * digest, BIGNUM * r, BIGNUM * s);
+			bool Verify (const EC_POINT * pub, const BIGNUM * digest, const BIGNUM * r, const BIGNUM * s);
+			
+		private:
+
+			EC_GROUP * m_Group;
+	};
+
+	std::unique_ptr<GOSTR3410Curve>& GetGOSTR3410Curve (GOSTR3410ParamSet paramSet);
+}
+}
+
+#endif