ecwrapper.h
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ecwrapper.h
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	// Copyright (c) 2009-2014 The Bitcoin Core developers
	// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#ifndef BITCOIN_ECWRAPPER_H
	#define BITCOIN_ECWRAPPER_H

	#include <cstddef>
	#include <vector>

	#include <openssl/ec.h>

	class uint256;

	/** RAII Wrapper around OpenSSL's EC_KEY */
	class CECKey {
	private:
	EC_KEY *pkey;

	public:
	CECKey();
	~CECKey();

	void GetPubKey(std::vector<unsigned char>& pubkey, bool fCompressed);
	bool SetPubKey(const unsigned char* pubkey, size_t size);
	bool Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig);

	/**
	* reconstruct public key from a compact signature
	* This is only slightly more CPU intensive than just verifying it.
	* If this function succeeds, the recovered public key is guaranteed to be valid
	* (the signature is a valid signature of the given data for that key)
	*/
	bool Recover(const uint256 &hash, const unsigned char *p64, int rec);

	bool TweakPublic(const unsigned char vchTweak[32]);
	static bool SanityCheck();
	};

	#endif // BITCOIN_ECWRAPPER_H