diff --git a/Identity.h b/Identity.h
index 5c93e3d6..d82e225e 100644
--- a/Identity.h
+++ b/Identity.h
@@ -6,6 +6,7 @@
 #include <string>
 #include "base64.h"
 #include "ElGamal.h"
+#include "Signature.h"
 
 namespace i2p
 {
diff --git a/Signature.h b/Signature.h
new file mode 100644
index 00000000..69c1bb86
--- /dev/null
+++ b/Signature.h
@@ -0,0 +1,43 @@
+#ifndef SIGNATURE_H__
+#define SIGNATURE_H__
+
+#include <inttypes.h>
+#include <cryptopp/dsa.h>
+#include "CryptoConst.h"
+
+namespace i2p
+{
+namespace crypto
+{
+	class Verifier
+	{
+		public:
+			
+			virtual ~Verifier () {};
+			virtual bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) = 0;
+	};
+
+	class DSAVerifier: public Verifier
+	{
+		public:
+
+			DSAVerifier (const uint8_t * signingKey)
+			{
+				m_PublicKey.Initialize (dsap, dsaq, dsag, CryptoPP::Integer (signingKey, 128));
+			}
+	
+			bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature)
+			{
+				CryptoPP::DSA::Verifier verifier (m_PublicKey);
+				return verifier.VerifyMessage (buf, len, signature, 40);
+			}	
+
+		private:
+
+			CryptoPP::DSA::PublicKey m_PublicKey;
+	};		
+}
+}
+
+#endif
+
diff --git a/Win32/i2pd.vcxproj b/Win32/i2pd.vcxproj
index 20a04ff4..80fed8e5 100644
--- a/Win32/i2pd.vcxproj
+++ b/Win32/i2pd.vcxproj
@@ -84,6 +84,8 @@
     <ClInclude Include="..\util.h" />
     <ClInclude Include="..\SOCKS.h" />
 	<ClInclude Include="..\I2PTunnel.h" />
+	<ClInclude Include="..\version.h" />
+	<ClInclude Include="..\Signature.h" />
     <ClInclude Include="Win32Service.h" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
diff --git a/build/CMakeLists.txt b/build/CMakeLists.txt
index f37f39ed..85f4f2ec 100644
--- a/build/CMakeLists.txt
+++ b/build/CMakeLists.txt
@@ -77,6 +77,7 @@ set ( HEADERS
     SOCKS.h
 	I2PTunnel.h
   version.h
+	Signature.h
 )
 
 if (WIN32)
diff --git a/filelist.mk b/filelist.mk
index dc13a773..9a7e9d9c 100644
--- a/filelist.mk
+++ b/filelist.mk
@@ -11,7 +11,7 @@ H_FILES := CryptoConst.h base64.h NTCPSession.h RouterInfo.h Transports.h \
 	RouterContext.h NetDb.h LeaseSet.h Tunnel.h TunnelEndpoint.h TunnelGateway.h \
 	TransitTunnel.h I2NPProtocol.h Log.h Garlic.h HTTPServer.h Streaming.h Identity.h \
 	SSU.h util.h Reseed.h DaemonLinux.h SSUData.h i2p.h aes.h SOCKS.h UPnP.h TunnelPool.h \
-	HTTPProxy.h AddressBook.h Daemon.h I2PTunnel.h version.h
+	HTTPProxy.h AddressBook.h Daemon.h I2PTunnel.h version.h Signature.h
 
 
 OBJECTS = $(addprefix obj/, $(notdir $(CPP_FILES:.cpp=.o)))