KeePass.Forms.KeyCreationForm.CreateCompositeKey C# (CSharp) Method

        private bool CreateCompositeKey()
        {
            m_pKey = new CompositeKey();

            if(m_cbPassword.Checked) // Use a password
            {
                if(m_secPassword.ContentsEqualTo(m_secRepeat) == false)
                {
                    MessageService.ShowWarning(KPRes.PasswordRepeatFailed);
                    return false;
                }

                if(m_secPassword.TextLength == 0)
                {
                    if(!MessageService.AskYesNo(KPRes.EmptyMasterPw +
                        MessageService.NewParagraph + KPRes.EmptyMasterPwHint +
                        MessageService.NewParagraph + KPRes.EmptyMasterPwQuestion,
                        null, false))
                    {
                        return false;
                    }
                }

                uint uMinLen = Program.Config.Security.MasterPassword.MinimumLength;
                if(m_secPassword.TextLength < uMinLen)
                {
                    string strML = KPRes.MasterPasswordMinLengthFailed;
                    strML = strML.Replace(@"{PARAM}", uMinLen.ToString());
                    MessageService.ShowWarning(strML);
                    return false;
                }

                byte[] pb = m_secPassword.ToUtf8();

                uint uMinQual = Program.Config.Security.MasterPassword.MinimumQuality;
                if(QualityEstimation.EstimatePasswordBits(pb) < uMinQual)
                {
                    string strMQ = KPRes.MasterPasswordMinQualityFailed;
                    strMQ = strMQ.Replace(@"{PARAM}", uMinQual.ToString());
                    MessageService.ShowWarning(strMQ);
                    Array.Clear(pb, 0, pb.Length);
                    return false;
                }

                string strValRes = Program.KeyValidatorPool.Validate(pb,
                    KeyValidationType.MasterPassword);
                if(strValRes != null)
                {
                    MessageService.ShowWarning(strValRes);
                    Array.Clear(pb, 0, pb.Length);
                    return false;
                }

                m_pKey.AddUserKey(new KcpPassword(pb));
                Array.Clear(pb, 0, pb.Length);
            }

            string strKeyFile = m_cmbKeyFile.Text;
            bool bIsKeyProv = Program.KeyProviderPool.IsKeyProvider(strKeyFile);

            if(m_cbKeyFile.Checked && (!strKeyFile.Equals(KPRes.NoKeyFileSpecifiedMeta)) &&
                (bIsKeyProv == false))
            {
                try { m_pKey.AddUserKey(new KcpKeyFile(strKeyFile)); }
                catch(Exception exKF)
                {
                    MessageService.ShowWarning(strKeyFile, KPRes.KeyFileError, exKF);
                    return false;
                }
            }
            else if(m_cbKeyFile.Checked && (!strKeyFile.Equals(KPRes.NoKeyFileSpecifiedMeta)) &&
                (bIsKeyProv == true))
            {
                KeyProviderQueryContext ctxKP = new KeyProviderQueryContext(
                    m_ioInfo, true, false);

                bool bPerformHash;
                byte[] pbCustomKey = Program.KeyProviderPool.GetKey(strKeyFile, ctxKP,
                    out bPerformHash);
                if((pbCustomKey != null) && (pbCustomKey.Length > 0))
                {
                    try { m_pKey.AddUserKey(new KcpCustomKey(strKeyFile, pbCustomKey, bPerformHash)); }
                    catch(Exception exCKP)
                    {
                        MessageService.ShowWarning(exCKP);
                        return false;
                    }

                    Array.Clear(pbCustomKey, 0, pbCustomKey.Length);
                }
                else return false; // Provider has shown error message
            }

            if(m_cbUserAccount.Checked)
            {
                try { m_pKey.AddUserKey(new KcpUserAccount()); }
                catch(Exception exUA)
                {
                    MessageService.ShowWarning(exUA);
                    return false;
                }
            }

            return true;
        }