public void setRestrictiveAes256EncryptionOptions(string userAndOwnerPassword)
{
QPDF_R3_PRINT_E printOption = QPDF_R3_PRINT_E.qpdf_r3p_none;
QPDF_R3_MODIFY_E modifyOption = QPDF_R3_MODIFY_E.qpdf_r3m_none;
bool extractAllowed = false;
bool encryptMetadata = false;
setAes256EncryptionOptions(userAndOwnerPassword, userAndOwnerPassword, printOption, modifyOption, extractAllowed, encryptMetadata);
}
public void setAes256EncryptionOptions(string userPassword, string ownerPassword, QPDF_R3_PRINT_E printOption, QPDF_R3_MODIFY_E modifyOption, bool extractAllowed, bool encryptMetadata)
{
initCheck();
writeInitCheck();
int po = (int)printOption;
int mo = (int)modifyOption;
int ea = extractAllowed ? 1 : 0;
int em = encryptMetadata ? 1 : 0;
qpdf_set_r6_encryption_parameters(ctx, userPassword, ownerPassword, 1, ea, po, mo, em);
}