C++ (Cpp) CECKey Examples

Example #1

File: ecwrapper.cpp Project: flirtcoin/flirtcoin

bool CECKey::SignCompact(const uint256 &hash, unsigned char *p64, int &rec) {
    bool fOk = false;
    ECDSA_SIG *sig = ECDSA_do_sign((unsigned char*)&hash, sizeof(hash), pkey);
    if (sig==NULL)
        return false;
    memset(p64, 0, 64);
    int nBitsR = BN_num_bits(sig->r);
    int nBitsS = BN_num_bits(sig->s);
    if (nBitsR <= 256 && nBitsS <= 256) {
        std::vector<unsigned char> pubkey;
        GetPubKey(pubkey, true);
        for (int i=0; i<4; i++) {
            CECKey keyRec;
            if (ECDSA_SIG_recover_key_GFp(keyRec.pkey, sig, (unsigned char*)&hash, sizeof(hash), i, 1) == 1) {
                std::vector<unsigned char> pubkeyRec;
                keyRec.GetPubKey(pubkeyRec, true);
                if (pubkeyRec == pubkey) {
                    rec = i;
                    fOk = true;
                    break;
                }
            }
        }
        assert(fOk);
        BN_bn2bin(sig->r,&p64[32-(nBitsR+7)/8]);
        BN_bn2bin(sig->s,&p64[64-(nBitsS+7)/8]);
    }
    ECDSA_SIG_free(sig);
    return fOk;
}

Example #2

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CKey::Sign(const uint256 &hash, std::vector<unsigned char>& vchSig) const {
    if (!fValid)
        return false;
    CECKey key;
    key.SetSecretBytes(vch);
    return key.Sign(hash, vchSig);
}

Example #3

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CPubKey::IsFullyValid() const {
    if (!IsValid())
        return false;
    CECKey key;
    if (!key.SetPubKey(*this))
        return false;
    return true;
}

Example #4

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

CPubKey CKey::GetPubKey() const {
    assert(fValid);
    CECKey key;
    key.SetSecretBytes(vch);
    CPubKey pubkey;
    key.GetPubKey(pubkey, fCompressed);
    return pubkey;
}

Example #5

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

CPrivKey CKey::GetPrivKey() const {
    assert(fValid);
    CECKey key;
    key.SetSecretBytes(vch);
    CPrivKey privkey;
    key.GetPrivKey(privkey, fCompressed);
    return privkey;
}

Example #6

File: key.cpp Project: MitchellChu/twister-core

bool CKey::Decrypt(ecies_secure_t const &cryptex, std::string &vchText )
{
    if (!fValid)
        return false;
    CECKey key;
    key.SetSecretBytes(vch);
    return key.Decrypt(cryptex, vchText);
}

Example #7

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CPubKey::Decompress() {
    if (!IsValid())
        return false;
    CECKey key;
    if (!key.SetPubKey(*this))
        return false;
    key.GetPubKey(*this, false);
    return true;
}

Example #8

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CPubKey::RecoverCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig) {
    if (vchSig.size() != 65)
        return false;
    CECKey key;
    if (!key.Recover(hash, &vchSig[1], (vchSig[0] - 27) & ~4))
        return false;
    key.GetPubKey(*this, (vchSig[0] - 27) & 4);
    return true;
}

Example #9

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CKey::SetPrivKey(const CPrivKey &privkey, bool fCompressedIn) {
    CECKey key;
    if (!key.SetPrivKey(privkey))
        return false;
    key.GetSecretBytes(vch);
    fCompressed = fCompressedIn;
    fValid = true;
    return true;
}

Example #10

File: key.cpp Project: MitchellChu/twister-core

bool CPubKey::Encrypt(std::string const &vchText, ecies_secure_t &cryptex)
{
    if (!IsValid())
        return false;
    CECKey key;
    if (!key.SetPubKey(*this))
        return false;
    return key.Encrypt(vchText, cryptex);
}

Example #11

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CPubKey::Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig) const {
    if (!IsValid())
        return false;
    CECKey key;
    if (!key.SetPubKey(*this))
        return false;
    if (!key.Verify(hash, vchSig))
        return false;
    return true;
}

Example #12

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CKey::SignCompact(const uint256 &hash, std::vector<unsigned char>& vchSig) const {
    if (!fValid)
        return false;
    CECKey key;
    key.SetSecretBytes(vch);
    vchSig.resize(65);
    int rec = -1;
    if (!key.SignCompact(hash, &vchSig[1], rec))
        return false;
    assert(rec != -1);
    vchSig[0] = 27 + rec + (fCompressed ? 4 : 0);
    return true;
}

Example #13

File: key.cpp Project: BitRaam/BitRaamSourceCodeVer4

bool CPubKey::VerifyCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig) const {
    if (!IsValid())
        return false;
    if (vchSig.size() != 65)
        return false;
    CECKey key;
    if (!key.Recover(hash, &vchSig[1], (vchSig[0] - 27) & ~4))
        return false;
    CPubKey pubkeyRec;
    key.GetPubKey(pubkeyRec, IsCompressed());
    if (*this != pubkeyRec)
        return false;
    return true;
}