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-rw-r--r--src/ecwrapper.h46
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+// Copyright (c) 2009-2014 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_EC_WRAPPER_H
+#define BITCOIN_EC_WRAPPER_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 GetSecretBytes(unsigned char vch[32]) const;
+ void SetSecretBytes(const unsigned char vch[32]);
+ int GetPrivKeySize(bool fCompressed);
+ int GetPrivKey(unsigned char* privkey, bool fCompressed);
+ bool SetPrivKey(const unsigned char* privkey, size_t size, bool fSkipCheck=false);
+ void GetPubKey(std::vector<unsigned char>& pubkey, bool fCompressed);
+ bool SetPubKey(const unsigned char* pubkey, size_t size);
+ bool Sign(const uint256 &hash, std::vector<unsigned char>& vchSig, bool lowS);
+ bool Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig);
+ bool SignCompact(const uint256 &hash, unsigned char *p64, int &rec);
+
+ // 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);
+
+ static bool TweakSecret(unsigned char vchSecretOut[32], const unsigned char vchSecretIn[32], const unsigned char vchTweak[32]);
+ bool TweakPublic(const unsigned char vchTweak[32]);
+ static bool SanityCheck();
+};
+
+#endif