public void GenEcdhKeys()
{
IntPtr ec_key = Libcrypto.EC_KEY_new_by_curve_name(415);
Libcrypto.EC_KEY_generate_key(ec_key);
IntPtr ec_group = Libcrypto.EC_KEY_get0_group(ec_key);
IntPtr ec_point = Libcrypto.EC_KEY_get0_public_key(ec_key);
Publen = Libcrypto.EC_POINT_point2oct(ec_group, ec_point, 4, PublicKey, 65, 0);
ec_point = Libcrypto.EC_KEY_get0_private_key(ec_key);
Prilen = Libcrypto.BN_bn2mpi(ec_point, PrivateKey);
}
private byte[] GenShareKeyByte(byte[] publicKey, byte[] privateKey)
{
IntPtr ec_key = Libcrypto.EC_KEY_new_by_curve_name(415);
IntPtr bn = Libcrypto.BN_new();
Libcrypto.BN_mpi2bn(privateKey, privateKey.Length, bn);
Libcrypto.EC_KEY_set_private_key(ec_key, bn);
Libcrypto.BN_free(bn);
IntPtr ec_group = Libcrypto.EC_KEY_get0_group(ec_key);
IntPtr ec_point = Libcrypto.EC_POINT_new(ec_group);
Libcrypto.EC_POINT_oct2point(ec_group, ec_point, publicKey, publicKey.Length, 0);
Libcrypto.ECDH_compute_key(ShareKey, 16, ec_point, ec_key, 0);
return(ShareKey);
}
