bool ne7ssh_crypt::getDHGroup14Sha1Public (Botan::BigInt &publicKey)
{
#if BOTAN_PRE_15
privKexKey = new DH_PrivateKey (get_dl_group("IETF-2048"));
#elif BOTAN_PRE_18
privKexKey = new DH_PrivateKey (DL_Group("modp/ietf/2048"));
#else
privKexKey = new DH_PrivateKey (*ne7ssh::rng, DL_Group("modp/ietf/2048"));
#endif
DH_PublicKey pubKexKey = *privKexKey;
publicKey = pubKexKey.get_y();
if (publicKey.is_zero()) return false;
else return true;
}
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;
}