C++ (Cpp) BigInt::sign Beispiele

Beispiel #1

Datei: sshpacket.cpp Projekt: FlavioFalcao/qt-creator

QByteArray AbstractSshPacket::encodeMpInt(const Botan::BigInt &number)
{
    if (number.is_zero())
        return QByteArray(4, 0);

    int stringLength = number.bytes();
    const bool positiveAndMsbSet = number.sign() == Botan::BigInt::Positive
                                   && (number.byte_at(stringLength - 1) & 0x80);
    if (positiveAndMsbSet)
        ++stringLength;
    QByteArray data;
    data.resize(4 + stringLength);
    int pos = 4;
    if (positiveAndMsbSet)
        data[pos++] = '\0';
    number.binary_encode(reinterpret_cast<Botan::byte *>(data.data()) + pos);
    setLengthField(data);
    return data;
}