key.h

#ifndef KEYS_H
#define KEYS_H

#include "keys_global.h"

#include <utils/allocators.h>
#include "pubkey.h"

#include <vector>


typedef std::vector<unsigned char, secure_allocator<unsigned char> > CPrivKey;

class CKey
{
private:
    bool fValid;

    bool fCompressed;

    unsigned char vch[32];

    bool static Check(const unsigned char* vch);

public:
    CKey() : fValid(false), fCompressed(false)
    {
        LockObject(vch);
    }

    CKey(const CKey& secret) : fValid(secret.fValid), fCompressed(secret.fCompressed)
    {
        LockObject(vch);
        memcpy(vch, secret.vch, sizeof(vch));
    }

    ~CKey()
    {
        UnlockObject(vch);
    }

    friend bool operator==(const CKey& a, const CKey& b)
    {
        return a.fCompressed == b.fCompressed && a.size() == b.size() &&
               memcmp(&a.vch[0], &b.vch[0], a.size()) == 0;
    }

    template <typename T>
    void Set(const T pbegin, const T pend, bool fCompressedIn)
    {
        if (pend - pbegin != 32) {
            fValid = false;
            return;
        }
        if (Check(&pbegin[0])) {
            memcpy(vch, (unsigned char*)&pbegin[0], 32);
            fValid = true;
            fCompressed = fCompressedIn;
        } else {
            fValid = false;
        }
    }

    unsigned int size() const { return (fValid ? 32 : 0); }
    const unsigned char* begin() const { return vch; }
    const unsigned char* end() const { return vch + size(); }

    bool IsValid() const { return fValid; }

    bool IsCompressed() const { return fCompressed; }

    bool SetPrivKey(const CPrivKey& vchPrivKey, bool fCompressed);

    void MakeNewKey(bool fCompressed);

    CPrivKey GetPrivKey() const;

    CPubKey GetPubKey() const;

    bool Sign(const uint256& hash, std::vector<unsigned char>& vchSig, uint32_t test_case = 0) const;

    bool SignCompact(const uint256& hash, std::vector<unsigned char>& vchSig) const;

    bool Derive(CKey& keyChild, ChainCode &ccChild, unsigned int nChild, const ChainCode& cc) const;

    bool VerifyPubKey(const CPubKey& vchPubKey) const;

    bool Load(CPrivKey& privkey, CPubKey& vchPubKey, bool fSkipCheck);

    static bool CheckSignatureElement(const unsigned char* vch, int len, bool half);
};

void ECC_Start(void);

void ECC_Stop(void);

bool ECC_InitSanityCheck(void);

#endif // KEYS_H