i2pd/Signature.h

#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