support of RI with EcDSA

Identity.cpp

@@ -100,7 +100,7 @@ namespace data
 			m_ExtendedBuffer = nullptr;
 		
 		delete m_Verifier;
-		CreateVerifier ();
+		m_Verifier = nullptr;
 		
 		return *this;
 	}	
@@ -115,7 +115,7 @@ namespace data
 		m_ExtendedLen = 0;
 
 		delete m_Verifier;
-		CreateVerifier ();
+		m_Verifier = nullptr;
 		
 		return *this;
 	}	
@@ -139,7 +139,7 @@ namespace data
 		CryptoPP::SHA256().CalculateDigest(m_IdentHash, buf, GetFullLen ());
 		
 		delete m_Verifier;
-		CreateVerifier ();
+		m_Verifier = nullptr;
 		
 		return GetFullLen ();
 	}	
@@ -161,6 +161,7 @@ namespace data
 		
 	size_t IdentityEx::GetSigningPublicKeyLen () const
 	{
+		if (!m_Verifier) CreateVerifier ();
 		if (m_Verifier)	
 			return m_Verifier->GetPublicKeyLen ();
 		return 128;
@@ -168,12 +169,14 @@ namespace data
 
 	size_t IdentityEx::GetSignatureLen () const
 	{	
+		if (!m_Verifier) CreateVerifier ();	
 		if (m_Verifier)
 			return m_Verifier->GetSignatureLen ();
 		return 40;
 	}	
 	bool IdentityEx::Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const 
 	{
+		if (!m_Verifier) CreateVerifier ();
 		if (m_Verifier)
 			return m_Verifier->Verify (buf, len, signature);
 		return false;
@@ -186,7 +189,7 @@ namespace data
 		return SIGNING_KEY_TYPE_DSA_SHA1;
 	}	
 		
-	void IdentityEx::CreateVerifier () 
+	void IdentityEx::CreateVerifier () const 
 	{
 		auto keyType = GetSigningKeyType ();
 		switch (keyType)

Identity.h

@@ -134,13 +134,13 @@ namespace data
 			
 		private:
 
-			void CreateVerifier ();
+			void CreateVerifier () const;
 			
 		private:
 
 			Identity m_StandardIdentity;
 			IdentHash m_IdentHash;
-			i2p::crypto::Verifier * m_Verifier;
+			mutable i2p::crypto::Verifier * m_Verifier; 
 			size_t m_ExtendedLen;
 			uint8_t * m_ExtendedBuffer;
 	};	

RouterContext.cpp

@@ -34,7 +34,7 @@ namespace i2p
 	void RouterContext::NewRouterInfo ()
 	{
 		i2p::data::RouterInfo routerInfo;
-		routerInfo.SetRouterIdentity (GetIdentity ().GetStandardIdentity ());
+		routerInfo.SetRouterIdentity (GetIdentity ());
 		int port = i2p::util::config::GetArg("-port", 0);
 		if (!port)
 			port = m_Rnd.GenerateWord32 (9111, 30777); // I2P network ports range

RouterInfo.cpp

@@ -55,10 +55,9 @@ namespace data
 		// don't delete buffer until save to file
 	}	
 		
-	void RouterInfo::SetRouterIdentity (const Identity& identity)
+	void RouterInfo::SetRouterIdentity (const IdentityEx& identity)
 	{	
 		m_RouterIdentity = identity;
-		m_IdentHash = m_RouterIdentity.Hash ();
 		m_Timestamp = i2p::util::GetMillisecondsSinceEpoch ();
 	}
 	
@@ -95,28 +94,15 @@ namespace data
 
 	void RouterInfo::ReadFromBuffer (bool verifySignature)
 	{
-		size_t identityLen = DEFAULT_IDENTITY_SIZE;
-		memcpy (&m_RouterIdentity, m_Buffer, DEFAULT_IDENTITY_SIZE);
-		if (m_RouterIdentity.certificate.type != CERTIFICATE_TYPE_NULL)
-		{
-			LogPrint (eLogError, "Certificate type ", m_RouterIdentity.certificate.type, " is not supported");
-			SetUnreachable (true);
-			return;
-		}
-
+		size_t identityLen = m_RouterIdentity.FromBuffer (m_Buffer, m_BufferLen);
 		std::stringstream str (std::string ((char *)m_Buffer + identityLen, m_BufferLen - identityLen));
 		ReadFromStream (str);
 		if (verifySignature)
 		{	
 			// verify signature
-			CryptoPP::DSA::PublicKey pubKey;
-			pubKey.Initialize (i2p::crypto::dsap, i2p::crypto::dsaq, i2p::crypto::dsag, CryptoPP::Integer (m_RouterIdentity.signingKey, 128));
-			CryptoPP::DSA::Verifier verifier (pubKey);
-			int l = m_BufferLen - 40;
-			if (!verifier.VerifyMessage ((uint8_t *)m_Buffer, l, (uint8_t *)m_Buffer + l, 40))
-			{	
+			int l = m_BufferLen - m_RouterIdentity.GetSignatureLen ();
+			if (!m_RouterIdentity.Verify ((uint8_t *)m_Buffer, l, (uint8_t *)m_Buffer + l))	
 				LogPrint (eLogError, "signature verification failed");
-			}
 		}	
 	}	
 	
@@ -235,8 +221,6 @@ namespace data
 				ExtractCaps (value);
 		}		
 
-		CryptoPP::SHA256().CalculateDigest(m_IdentHash, (uint8_t *)&m_RouterIdentity, sizeof (m_RouterIdentity));
-
 		if (!m_SupportedTransports || !m_Addresses.size() || (UsesIntroducer () && !introducers))
 			SetUnreachable (true);
 	}	

RouterInfo.h

@@ -90,10 +90,10 @@ namespace data
 			RouterInfo (const uint8_t * buf, int len);
 			~RouterInfo ();
 			
-			const Identity& GetRouterIdentity () const { return m_RouterIdentity; };
-			void SetRouterIdentity (const Identity& identity);
-			std::string GetIdentHashBase64 () const { return m_IdentHash.ToBase64 (); };
-			std::string GetIdentHashAbbreviation () const { return m_IdentHash.ToBase64 ().substr (0, 4); };
+			const IdentityEx& GetRouterIdentity () const { return m_RouterIdentity; };
+			void SetRouterIdentity (const IdentityEx& identity);
+			std::string GetIdentHashBase64 () const { return GetIdentHash ().ToBase64 (); };
+			std::string GetIdentHashAbbreviation () const { return GetIdentHash ().ToBase64 ().substr (0, 4); };
 			uint64_t GetTimestamp () const { return m_Timestamp; };
 			std::vector<Address>& GetAddresses () { return m_Addresses; };
 			const Address * GetNTCPAddress (bool v4only = true) const;
@@ -138,8 +138,8 @@ namespace data
 			void DeleteBuffer () { delete m_Buffer; m_Buffer = nullptr; };
 			
 			// implements RoutingDestination
-			const IdentHash& GetIdentHash () const { return m_IdentHash; };
-			const uint8_t * GetEncryptionPublicKey () const { return m_RouterIdentity.publicKey; };
+			const IdentHash& GetIdentHash () const { return m_RouterIdentity.GetIdentHash (); };
+			const uint8_t * GetEncryptionPublicKey () const { return m_RouterIdentity.GetStandardIdentity ().publicKey; };
 			bool IsDestination () const { return false; };
 
 			
@@ -159,8 +159,7 @@ namespace data
 		private:
 
 			std::string m_FullPath;
-			Identity m_RouterIdentity;
-			IdentHash m_IdentHash;
+			IdentityEx m_RouterIdentity;
 			uint8_t * m_Buffer;
 			int m_BufferLen;
 			uint64_t m_Timestamp;

version.h

@@ -2,7 +2,7 @@
 #define _VERSION_H_
 
 #define CODENAME "Purple"
-#define VERSION "0.2.1"
-#define I2P_VERSION "0.9.15"
+#define VERSION "0.3.0"
+#define I2P_VERSION "0.9.16"
 
 #endif