moved GOST to separate file

8 years ago · 6ed7f19673
7 changed files with 202 additions and 164 deletions
--- a/Gost.cpp
+++ b/Gost.cpp
@ -0,0 +1,150 @@
				@@ -0,0 +1,150 @@
+#include <array>
+#include <openssl/evp.h>
+#include "Gost.h"
+
+namespace i2p
+{
+namespace crypto
+{
+	GOSTR3410Curve::GOSTR3410Curve (BIGNUM * a, BIGNUM * b, BIGNUM * p, BIGNUM * q, BIGNUM * x, BIGNUM * y)
+	{
+		BN_CTX * ctx = BN_CTX_new ();
+		m_Group = EC_GROUP_new_curve_GFp (p, a, b, ctx);
+		EC_POINT * P = EC_POINT_new (m_Group);
+		EC_POINT_set_affine_coordinates_GFp (m_Group, P, x, y, ctx);
+		EC_GROUP_set_generator (m_Group, P, q, nullptr);
+		EC_GROUP_set_curve_name (m_Group, NID_id_GostR3410_2001);
+		EC_POINT_free(P);
+		BN_CTX_free (ctx);
+	}
+
+	GOSTR3410Curve::~GOSTR3410Curve ()
+	{
+		EC_GROUP_free (m_Group);
+	}				
+
+	EC_POINT * GOSTR3410Curve::MulP (const BIGNUM * n) const
+	{
+		BN_CTX * ctx = BN_CTX_new ();
+		auto p = EC_POINT_new (m_Group);
+		EC_POINT_mul (m_Group, p, n, nullptr, nullptr, ctx);
+		BN_CTX_free (ctx);
+		return p;
+	}
+
+	bool GOSTR3410Curve::GetXY (const EC_POINT * p, BIGNUM * x, BIGNUM * y) const
+	{
+		return EC_POINT_get_affine_coordinates_GFp (m_Group, p, x, y, nullptr);
+	}
+
+	EC_POINT * GOSTR3410Curve::CreatePoint (const BIGNUM * x, const BIGNUM * y) const
+	{
+		EC_POINT * p = EC_POINT_new (m_Group);
+		EC_POINT_set_affine_coordinates_GFp (m_Group, p, x, y, nullptr);
+		return p;
+	}
+
+	void GOSTR3410Curve::Sign (const BIGNUM * priv, const BIGNUM * digest, BIGNUM * r, BIGNUM * s)
+	{
+		BN_CTX * ctx = BN_CTX_new ();
+		BN_CTX_start (ctx);
+		BIGNUM * q = BN_CTX_get (ctx);
+		EC_GROUP_get_order(m_Group, q, ctx);
+		BIGNUM * k = BN_CTX_get (ctx);
+		BN_rand_range (k, q); // 0 < k < q
+		EC_POINT * C = MulP (k); // C = k*P
+		GetXY (C, r, nullptr); // r = Cx
+		EC_POINT_free (C);
+		BN_mod_mul (s, r, priv, q, ctx); // (r*priv)%q
+		BIGNUM * tmp = BN_CTX_get (ctx);
+		BN_mod_mul (tmp, k, digest, q, ctx); // (k*digest)%q
+		BN_mod_add (s, s, tmp, q, ctx); // (r*priv+k*digest)%q
+		BN_CTX_end (ctx);
+		BN_CTX_free (ctx);
+	}
+
+	bool GOSTR3410Curve::Verify (const EC_POINT * pub, const BIGNUM * digest, const BIGNUM * r, const BIGNUM * s)
+	{
+		BN_CTX * ctx = BN_CTX_new ();
+		BN_CTX_start (ctx);
+		BIGNUM * q = BN_CTX_get (ctx);
+		EC_GROUP_get_order(m_Group, q, ctx);
+		BIGNUM * h = BN_CTX_get (ctx);
+		BN_mod (h, digest, q, ctx); // h = digest % q
+		BN_mod_inverse (h, h, q, ctx); // 1/h mod q
+		BIGNUM * z1 = BN_CTX_get (ctx);
+		BN_mod_mul (z1, s, h, q, ctx); // z1 = s/h
+		BIGNUM * z2 = BN_CTX_get (ctx);				
+		BN_sub (z2, q, r); // z2 = -r
+		BN_mod_mul (z2, z2, h, q, ctx); // z2 = -r/h
+		EC_POINT * C = EC_POINT_new (m_Group);
+		EC_POINT_mul (m_Group, C, z1, pub, z2, ctx); // z1*P + z2*pub
+		BIGNUM * x = BN_CTX_get (ctx);	
+		GetXY  (C, x, nullptr); // Cx
+		BN_mod (x, x, q, ctx); // Cx % q
+		bool ret = !BN_cmp (x, r); // Cx = r ?
+		EC_POINT_free (C);
+		BN_CTX_end (ctx);
+		BN_CTX_free (ctx);
+		return ret;
+	}	
+
+	static GOSTR3410Curve * CreateGOSTR3410Curve (GOSTR3410ParamSet paramSet)
+	{
+		// a, b, p, q, x, y	
+		static const char * params[eGOSTR3410NumParamSets][6] = 
+		{
+			{ 
+				"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD94",
+				"A6",
+				"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD97",
+				"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6C611070995AD10045841B09B761B893",
+				"1",
+				"8D91E471E0989CDA27DF505A453F2B7635294F2DDF23E3B122ACC99C9E9F1E14"
+			}, // A
+			{
+				"8000000000000000000000000000000000000000000000000000000000000C96",
+ 				"3E1AF419A269A5F866A7D3C25C3DF80AE979259373FF2B182F49D4CE7E1BBC8B",
+ 				"8000000000000000000000000000000000000000000000000000000000000C99",
+ 				"800000000000000000000000000000015F700CFFF1A624E5E497161BCC8A198F",
+				"1",
+				"3FA8124359F96680B83D1C3EB2C070E5C545C9858D03ECFB744BF8D717717EFC"
+			}, // B	
+			{
+				"9B9F605F5A858107AB1EC85E6B41C8AACF846E86789051D37998F7B9022D7598",
+ 				"805A",
+ 				"9B9F605F5A858107AB1EC85E6B41C8AACF846E86789051D37998F7B9022D759B",
+ 				"9B9F605F5A858107AB1EC85E6B41C8AA582CA3511EDDFB74F02F3A6598980BB9",
+ 				"0",
+				"41ECE55743711A8C3CBF3783CD08C0EE4D4DC440D4641A8F366E550DFDB3BB67"
+			} // C
+		};	
+		
+		BIGNUM * a = nullptr, * b = nullptr, * p = nullptr, * q =nullptr, * x = nullptr, * y = nullptr;
+		BN_hex2bn(&a, params[paramSet][0]);
+		BN_hex2bn(&b, params[paramSet][1]);
+		BN_hex2bn(&p, params[paramSet][2]);
+		BN_hex2bn(&q, params[paramSet][3]);
+		BN_hex2bn(&x, params[paramSet][4]);
+		BN_hex2bn(&y, params[paramSet][5]);
+		auto curve = new GOSTR3410Curve (a, b, p, q, x, y);
+		BN_free (a); BN_free (b); BN_free (p); BN_free (q); BN_free (x); BN_free (y);
+		return curve;
+	}	
+
+	static std::array<std::unique_ptr<GOSTR3410Curve>, eGOSTR3410NumParamSets> g_GOSTR3410Curves;
+	std::unique_ptr<GOSTR3410Curve>& GetGOSTR3410Curve (GOSTR3410ParamSet paramSet)
+	{
+		if (!g_GOSTR3410Curves[paramSet])
+		{
+			auto c = CreateGOSTR3410Curve (paramSet);	
+			if (!g_GOSTR3410Curves[paramSet]) // make sure it was not created already
+				g_GOSTR3410Curves[paramSet].reset (c);
+			else
+				delete c;
+		}	
+		return g_GOSTR3410Curves[paramSet]; 
+	}	
+	
+}
+}
--- a/Gost.h
+++ b/Gost.h
@ -0,0 +1,47 @@
				@@ -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
--- a/Signature.cpp
+++ b/Signature.cpp
@ -1,5 +1,4 @@
				@@ -1,5 +1,4 @@
 #include <memory>
-#include <array>
 #include "Log.h"
 #include "Signature.h"

@ -497,155 +496,6 @@ namespace crypto
				@@ -497,155 +496,6 @@ namespace crypto
 //----------------------------------------------
 // GOST

-	class GOSTR3410Curve
-	{
-		public:
-
-			GOSTR3410Curve (BIGNUM * a, BIGNUM * b, BIGNUM * p, BIGNUM * q, BIGNUM * x, BIGNUM * y)
-			{
-				BN_CTX * ctx = BN_CTX_new ();
-				m_Group = EC_GROUP_new_curve_GFp (p, a, b, ctx);
-				EC_POINT * P = EC_POINT_new (m_Group);
-				EC_POINT_set_affine_coordinates_GFp (m_Group, P, x, y, ctx);
-				EC_GROUP_set_generator (m_Group, P, q, nullptr);
-				EC_GROUP_set_curve_name (m_Group, NID_id_GostR3410_2001);
-				EC_POINT_free(P);
-				BN_CTX_free (ctx);
-			}
-		
-			~GOSTR3410Curve ()
-			{
-				EC_GROUP_free (m_Group);
-			}				
-
-			EC_POINT * MulP (const BIGNUM * n) const
-			{
-				BN_CTX * ctx = BN_CTX_new ();
-				auto p = EC_POINT_new (m_Group);
-				EC_POINT_mul (m_Group, p, n, nullptr, nullptr, ctx);
-				BN_CTX_free (ctx);
-				return p;
-			}
-
-			bool GetXY (const EC_POINT * p, BIGNUM * x, BIGNUM * y) const
-			{
-				return EC_POINT_get_affine_coordinates_GFp (m_Group, p, x, y, nullptr);
-			}
-
-			EC_POINT * CreatePoint (const BIGNUM * x, const BIGNUM * y) const
-			{
-				EC_POINT * p = EC_POINT_new (m_Group);
-				EC_POINT_set_affine_coordinates_GFp (m_Group, p, x, y, nullptr);
-				return p;
-			}
-
-			void Sign (const BIGNUM * priv, const BIGNUM * digest, BIGNUM * r, BIGNUM * s)
-			{
-				BN_CTX * ctx = BN_CTX_new ();
-				BN_CTX_start (ctx);
-				BIGNUM * q = BN_CTX_get (ctx);
-				EC_GROUP_get_order(m_Group, q, ctx);
-				BIGNUM * k = BN_CTX_get (ctx);
-				BN_rand_range (k, q); // 0 < k < q
-				EC_POINT * C = MulP (k); // C = k*P
-				GetXY (C, r, nullptr); // r = Cx
-				EC_POINT_free (C);
-				BN_mod_mul (s, r, priv, q, ctx); // (r*priv)%q
-				BIGNUM * tmp = BN_CTX_get (ctx);
-				BN_mod_mul (tmp, k, digest, q, ctx); // (k*digest)%q
-				BN_mod_add (s, s, tmp, q, ctx); // (r*priv+k*digest)%q
-				BN_CTX_end (ctx);
-				BN_CTX_free (ctx);
-			}
-
-			bool Verify (const EC_POINT * pub, const BIGNUM * digest, const BIGNUM * r, const BIGNUM * s)
-			{
-				BN_CTX * ctx = BN_CTX_new ();
-				BN_CTX_start (ctx);
-				BIGNUM * q = BN_CTX_get (ctx);
-				EC_GROUP_get_order(m_Group, q, ctx);
-				BIGNUM * h = BN_CTX_get (ctx);
-				BN_mod (h, digest, q, ctx); // h = digest % q
-				BN_mod_inverse (h, h, q, ctx); // 1/h mod q
-				BIGNUM * z1 = BN_CTX_get (ctx);
-				BN_mod_mul (z1, s, h, q, ctx); // z1 = s/h
-				BIGNUM * z2 = BN_CTX_get (ctx);				
-				BN_sub (z2, q, r); // z2 = -r
- 				BN_mod_mul (z2, z2, h, q, ctx); // z2 = -r/h
-				EC_POINT * C = EC_POINT_new (m_Group);
-				EC_POINT_mul (m_Group, C, z1, pub, z2, ctx); // z1*P + z2*pub
-				BIGNUM * x = BN_CTX_get (ctx);	
-				GetXY  (C, x, nullptr); // Cx
-				BN_mod (x, x, q, ctx); // Cx % q
-				bool ret = !BN_cmp (x, r); // Cx = r ?
-				EC_POINT_free (C);
-				BN_CTX_end (ctx);
-				BN_CTX_free (ctx);
-				return ret;
-			}
-			
-		private:
-
-			EC_GROUP * m_Group;
-	};
-
-	GOSTR3410Curve * CreateGOSTR3410Curve (GOSTR3410ParamSet paramSet)
-	{
-		// a, b, p, q, x, y	
-		static const char * params[eGOSTR3410NumParamSets][6] = 
-		{
-			{ 
-				"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD94",
-				"A6",
-				"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD97",
-				"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6C611070995AD10045841B09B761B893",
-				"1",
-				"8D91E471E0989CDA27DF505A453F2B7635294F2DDF23E3B122ACC99C9E9F1E14"
-			}, // A
-			{
-				"8000000000000000000000000000000000000000000000000000000000000C96",
- 				"3E1AF419A269A5F866A7D3C25C3DF80AE979259373FF2B182F49D4CE7E1BBC8B",
- 				"8000000000000000000000000000000000000000000000000000000000000C99",
- 				"800000000000000000000000000000015F700CFFF1A624E5E497161BCC8A198F",
-				"1",
-				"3FA8124359F96680B83D1C3EB2C070E5C545C9858D03ECFB744BF8D717717EFC"
-			}, // B	
-			{
-				"9B9F605F5A858107AB1EC85E6B41C8AACF846E86789051D37998F7B9022D7598",
- 				"805A",
- 				"9B9F605F5A858107AB1EC85E6B41C8AACF846E86789051D37998F7B9022D759B",
- 				"9B9F605F5A858107AB1EC85E6B41C8AA582CA3511EDDFB74F02F3A6598980BB9",
- 				"0",
-				"41ECE55743711A8C3CBF3783CD08C0EE4D4DC440D4641A8F366E550DFDB3BB67"
-			} // C
-		};	
-		
-		BIGNUM * a = nullptr, * b = nullptr, * p = nullptr, * q =nullptr, * x = nullptr, * y = nullptr;
-		BN_hex2bn(&a, params[paramSet][0]);
-		BN_hex2bn(&b, params[paramSet][1]);
-		BN_hex2bn(&p, params[paramSet][2]);
-		BN_hex2bn(&q, params[paramSet][3]);
-		BN_hex2bn(&x, params[paramSet][4]);
-		BN_hex2bn(&y, params[paramSet][5]);
-		auto curve = new GOSTR3410Curve (a, b, p, q, x, y);
-		BN_free (a); BN_free (b); BN_free (p); BN_free (q); BN_free (x); BN_free (y);
-		return curve;
-	}	
-	
-	static std::array<std::unique_ptr<GOSTR3410Curve>, eGOSTR3410NumParamSets> g_GOSTR3410Curves;
-	std::unique_ptr<GOSTR3410Curve>& GetGOSTR3410Curve (GOSTR3410ParamSet paramSet)
-	{
-		if (!g_GOSTR3410Curves[paramSet])
-		{
-			auto c = CreateGOSTR3410Curve (paramSet);	
-			if (!g_GOSTR3410Curves[paramSet]) // make sure it was not created already
-				g_GOSTR3410Curves[paramSet].reset (c);
-			else
-				delete c;
-		}	
-		return g_GOSTR3410Curves[paramSet]; 
-	}	
-
 	GOSTR3410Verifier::GOSTR3410Verifier (GOSTR3410ParamSet paramSet, const uint8_t * signingKey):
 		m_ParamSet (paramSet)
 	{ 
--- a/Signature.h
+++ b/Signature.h
@ -9,6 +9,7 @@
				@@ -9,6 +9,7 @@
 #include <openssl/rsa.h>
 #include <openssl/evp.h>
 #include "Crypto.h"
+#include "Gost.h"

 namespace i2p
 {
@ -443,17 +444,6 @@ namespace crypto
				@@ -443,17 +444,6 @@ namespace crypto
 	}

 	// ГОСТ Р 34.10-2001
-
-	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
-	};	
 	
 	const size_t GOSTR3410_PUBLIC_KEY_LENGTH = 64;
 	const size_t GOSTR3410_SIGNATURE_LENGTH = 64;
--- a/android/jni/Android.mk
+++ b/android/jni/Android.mk
@ -59,6 +59,7 @@ LOCAL_SRC_FILES := DaemonAndroid.cpp i2pd_android.cpp \
				@@ -59,6 +59,7 @@ LOCAL_SRC_FILES := DaemonAndroid.cpp i2pd_android.cpp \
    ../../TunnelPool.cpp \
 	../../Timestamp.cpp \
 	../../Event.cpp \
+	../../Gost.cpp \
 	../../WebSocks.cpp \
 ../../BloomFilter.cpp \
    ../../util.cpp \
--- a/filelist.mk
+++ b/filelist.mk
@ -5,7 +5,7 @@ LIB_SRC = \
				@@ -5,7 +5,7 @@ LIB_SRC = \
  SSUSession.cpp SSUData.cpp Streaming.cpp Identity.cpp TransitTunnel.cpp \
  Transports.cpp Tunnel.cpp TunnelEndpoint.cpp TunnelPool.cpp TunnelGateway.cpp \
  Destination.cpp Base.cpp I2PEndian.cpp FS.cpp Config.cpp Family.cpp \
-  Config.cpp HTTP.cpp Timestamp.cpp util.cpp api.cpp Event.cpp
+  Config.cpp HTTP.cpp Timestamp.cpp util.cpp api.cpp Event.cpp Gost.cpp

 LIB_CLIENT_SRC = \
 	AddressBook.cpp BOB.cpp ClientContext.cpp I2PTunnel.cpp I2PService.cpp \
--- a/qt/i2pd_qt/i2pd_qt.pro
+++ b/qt/i2pd_qt/i2pd_qt.pro
@ -36,7 +36,7 @@ SOURCES += DaemonQT.cpp mainwindow.cpp \
				@@ -36,7 +36,7 @@ SOURCES += DaemonQT.cpp mainwindow.cpp \
 	../../SSUData.cpp ../../SSUSession.cpp ../../Streaming.cpp ../../TransitTunnel.cpp \
 	../../Transports.cpp ../../Tunnel.cpp ../../TunnelEndpoint.cpp ../../TunnelGateway.cpp \
 	../../TunnelPool.cpp ../../UPnP.cpp ../../Gzip.cpp ../../Timestamp.cpp ../../util.cpp \
-	../../Event.cpp ../../BloomFilter.cpp ../../WebSocks.cpp ../../i2pd.cpp
+	../../Event.cpp ../../BloomFiler.cpp ../../Gost.cpp ../../i2pd.cpp

 HEADERS  += DaemonQT.h mainwindow.h \
 	../../HTTPServer.h ../../I2PControl.h ../../UPnP.h ../../Daemon.h ../../Config.h \
@ -51,7 +51,7 @@ HEADERS  += DaemonQT.h mainwindow.h \
				@@ -51,7 +51,7 @@ HEADERS  += DaemonQT.h mainwindow.h \
 	../../TransportSession.h ../../Tunnel.h ../../TunnelBase.h ../../TunnelConfig.h \
 	../../TunnelEndpoint.h ../../TunnelGateway.h ../../TunnelPool.h ../../UPnP.h \
 	../../util.h ../../version.h ../../Gzip.h ../../Tag.h \
-	../../BloomFilter.h ../../Event.h ../../WebSocks.h
+	../../BloomFiler.h ../../Event.h ../../Gost.h

 FORMS += mainwindow.ui