47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
// Copyright (c) 2009-2014 The Bitcoin developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_ECWRAPPER_H
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#define BITCOIN_ECWRAPPER_H
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#include <cstddef>
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#include <vector>
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#include <openssl/ec.h>
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class uint256;
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// RAII Wrapper around OpenSSL's EC_KEY
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class CECKey {
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private:
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EC_KEY *pkey;
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public:
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CECKey();
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~CECKey();
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void GetSecretBytes(unsigned char vch[32]) const;
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void SetSecretBytes(const unsigned char vch[32]);
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int GetPrivKeySize(bool fCompressed);
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int GetPrivKey(unsigned char* privkey, bool fCompressed);
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bool SetPrivKey(const unsigned char* privkey, size_t size, bool fSkipCheck=false);
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void GetPubKey(std::vector<unsigned char>& pubkey, bool fCompressed);
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bool SetPubKey(const unsigned char* pubkey, size_t size);
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bool Sign(const uint256 &hash, std::vector<unsigned char>& vchSig, bool lowS);
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bool Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig);
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bool SignCompact(const uint256 &hash, unsigned char *p64, int &rec);
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// reconstruct public key from a compact signature
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// This is only slightly more CPU intensive than just verifying it.
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// If this function succeeds, the recovered public key is guaranteed to be valid
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// (the signature is a valid signature of the given data for that key)
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bool Recover(const uint256 &hash, const unsigned char *p64, int rec);
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static bool TweakSecret(unsigned char vchSecretOut[32], const unsigned char vchSecretIn[32], const unsigned char vchTweak[32]);
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bool TweakPublic(const unsigned char vchTweak[32]);
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static bool SanityCheck();
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};
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#endif // BITCOIN_EC_WRAPPER_H
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