SystemX.Web/Projects/VPKI/VPKI/VPKI.Web.Client/Components/Module/VPKIApiCertificate.razor

@using System.Security.Cryptography
@using System.Text
@using Org.BouncyCastle.Crypto
@using Org.BouncyCastle.Crypto.Generators
@using Org.BouncyCastle.Crypto.Parameters
@using Org.BouncyCastle.OpenSsl
@using Org.BouncyCastle.Security
@using SystemX.Core.Communication
@using VPKI.Library.Packet

@inject CertificateService CertificateService
@inject ApiService ApiService
@inject VpkiDialogService DialogService

<RadzenFieldset Text="Certificate">
    <div style="display:flex">
        <!--generator-->
        <RadzenFieldset Style="width: 100%; margin-right: 20px;" Text="Certificate Generator">
            <div style="margin-bottom: 10px;">               
                <RadzenButton Style="width:100%;" Text="@($"Signed Hash ({StrISO})")" Click="OnClickSignedHash"></RadzenButton>
                
                <div style="margin-top: 10px;">
                    <RadzenTextArea Style="width:100%; height: 130px;" @bind-Value=@StringCsrHashed>
                    </RadzenTextArea>
                </div>
            </div>
            <div style="margin-bottom: 10px;">
                <RadzenLabel Style="width: 130px;" Text="Device ID"></RadzenLabel>
                <RadzenTextBox Style="margin-right: 10px;" @bind-Value="@CertificateContainer.RequestCertificate.iftid"></RadzenTextBox>
            </div>
            <div style="margin-bottom: 10px;">
                <RadzenLabel Style="width: 130px;" Text="Tier Code"></RadzenLabel>
                <RadzenTextBox Style="margin-right: 10px;" @bind-Value="@CertificateContainer.RequestCertificate.tierCode"></RadzenTextBox>
            </div>
            <div style="margin-bottom: 10px;">
                <RadzenLabel Style="width: 130px;" Text="Unit Code"></RadzenLabel>
                <RadzenTextBox Style="margin-right: 10px;" @bind-Value="@CertificateContainer.RequestCertificate.unitCode"></RadzenTextBox>
            </div>
            <div style="margin-bottom: 10px;">
                <RadzenLabel Style="width: 130px;" Text="Vehicle Code"></RadzenLabel>
                <RadzenTextBox Style="margin-right: 10px;" @bind-Value="@CertificateContainer.RequestCertificate.vehicleCode"></RadzenTextBox>
            </div>
            <div style="margin-bottom: 10px;">
                <RadzenLabel Style="width: 130px;" Text="Local Code"></RadzenLabel>
                <RadzenTextBox Style="margin-right: 10px;" @bind-Value="@CertificateContainer.RequestCertificate.localCode"></RadzenTextBox>
            </div>
            <div style="margin-bottom: 10px;">
                <RadzenLabel Style="width: 130px;" Text="Brand Code"></RadzenLabel>
                <RadzenTextBox Style="margin-right: 10px;" @bind-Value="@CertificateContainer.RequestCertificate.brandCode"></RadzenTextBox>
            </div>
        </RadzenFieldset>

        <!--TX RX-->
        <RadzenFieldset Style="width:100%;" Text="Call API">
            <div>
                <RadzenButton Style="width:100%; margin-bottom: 0.5rem;" Text="@($"Generate Request {StrISO}")" Click="@OnClickGenerateCertificate"></RadzenButton>
                <RadzenButton Style="width:100%;" Text="@($"Send Request")" Click="@OnClickSendCertificate"></RadzenButton>
            </div>
            <div>
                <div>
                    <RadzenLabel Text="Request"></RadzenLabel>
                </div>
                <div>
                    <RadzenTextArea Style="width:100%; height: 180px;" @bind-Value=@CertificateContainer.StrRequest>
                    </RadzenTextArea>
                </div>
                <div>
                    <RadzenLabel Text="Response"></RadzenLabel>
                </div>
                <div>
                    <RadzenTextArea Style="width:100%; height: 180px;" @bind-Value="@CertificateContainer.StrResponse">
                    </RadzenTextArea>
                </div>
            </div>
        </RadzenFieldset>
    </div>
</RadzenFieldset>

@code {
    [Parameter, EditorRequired]
    public CertificateContainer CertificateContainer { get; set; } = new CertificateContainer();
    [Parameter]
    public EventCallback<CertificateContainer> CertificateContainerChanged { get; set; }

    [Parameter, EditorRequired]
    public string ServerAddress { get; set; } = string.Empty;

    [Parameter]
    public TbscsrContainer TbscsrContainer { get; set; } = new TbscsrContainer();

    //ISO
    private string StrISO = string.Empty;

    private string StringCsrHashed = string.Empty;

    protected override void OnInitialized()
    {
        StrISO = $"{TbscsrContainer.ISOType.ToString().Replace("_", "-")}";
    }

    protected override void OnParametersSet()
    {
        string ecdsa = "";
        if (TbscsrContainer.VpkiType == VpkiType.prov_v1)
        {
            ecdsa = ECDSAType.SHA256WITHECDSA.ToString();          
        }
        else if (TbscsrContainer.VpkiType == VpkiType.prov_cert || TbscsrContainer.VpkiType == VpkiType.vehicle_cert)
        {
            ecdsa = ECDSAType.NONEWITHECDSA.ToString();          
        }

        CreateCsrHash(ecdsa);
    }

    public void OnClickSignedHash()
    {
        SignedHash();
    }

    private void SignedHash()
    {
        if (TbscsrContainer.KeyPair != null && TbscsrContainer.ResponseTbscsr.data != null)
        {
            var publicKey = (ECPublicKeyParameters)TbscsrContainer.KeyPair.Public;          

            string ecdsa = "";
            if (TbscsrContainer.VpkiType == VpkiType.prov_v1)
            {
                ecdsa = ECDSAType.SHA256WITHECDSA.ToString();
                var pKey = TbscsrContainer.PublicKey;
                CertificateContainer.CsrHashed = CertificateService.SignHashed02(TbscsrContainer.ResponseTbscsr.data.hashedtbscsr, TbscsrContainer.KeyPair);
            }
            else if (TbscsrContainer.VpkiType == VpkiType.prov_cert || TbscsrContainer.VpkiType == VpkiType.vehicle_cert)
            {
                ecdsa = ECDSAType.NONEWITHECDSA.ToString();
                CertificateContainer.CsrHashed = CertificateService.SignHashed20(TbscsrContainer.ResponseTbscsr.data.hashedtbscsr, TbscsrContainer.KeyPair);
            }

            CreateCsrHash(ecdsa);
        }
        else
        {
            StringCsrHashed += "Request tbscsr first";
        }
    }

    private void CreateCsrHash(string ecdsa)
    {
        if(string.IsNullOrEmpty(CertificateContainer.CsrHashed.SignedCsr) == false)
        {
            StringCsrHashed = $"{StrISO} Signed {ecdsa}:{Environment.NewLine}";
            StringCsrHashed += $"{CertificateContainer.CsrHashed.SignedCsr}{Environment.NewLine}";
            StringCsrHashed += $"{Environment.NewLine}";

            StringCsrHashed += $"{StrISO} Signed {ecdsa}(DER ENCODED):{Environment.NewLine}";
            StringCsrHashed += $"{CertificateContainer.CsrHashed.EncodedSignedCsr}{Environment.NewLine}";
            StringCsrHashed += $"{Environment.NewLine}";

            StringCsrHashed += $"Verify:{CertificateContainer.CsrHashed.Verify}{Environment.NewLine}";
        }        
    }

    public void OnClickGenerateCertificate()
    {
        CertificateContainer.RequestCertificate.csrsignature = CertificateContainer.CsrHashed.EncodedSignedCsr;
        if (TbscsrContainer.VpkiType == VpkiType.prov_cert || TbscsrContainer.VpkiType == VpkiType.vehicle_cert)
        {
            CertificateContainer.RequestCertificate.csrsignature = CertificateContainer.CsrHashed.EncodedSignedCsr;
        }

        CertificateContainer.StrRequest = $"{CertificateContainer.RequestCertificate.ToJson()}";
    }

    public async Task OnClickSendCertificate()
    {
        DialogService.OpenIndicator();

        try
        {
            var request = JsonConvert.DeserializeObject<Request_Certificate>(CertificateContainer.StrRequest);
            if (request != null)
            {
                string url = $"api/v1/certificate";
                if (TbscsrContainer.VpkiType == VpkiType.prov_cert)
                {
                    url = $"api/v2/prov/certificate";
                }
                else if (TbscsrContainer.VpkiType == VpkiType.vehicle_cert)
                {
                    url = $"api/v2/vehicle/certificate";
                }

                var http = new Http();
                var Response = await http.PostJsonAsync<Request_Certificate, Response_Certificate>($"https://{ServerAddress}/{url}", request);
                if (Response != null)
                {
                    CertificateContainer.ResponseCertificate = Response;
                    CertificateContainer.StrResponse = $"{Response.ToJson()}";
                }
            }
            else
            {
                TbscsrContainer.StrResponse = "Request Context Error";
            }
        }
        catch (Exception ex)
        {
            Log4net.WriteLine(ex);
            TbscsrContainer.StrResponse = $"Request Context Error{Environment.NewLine}{ex.Message}";
        }     

        DialogService.CloseIndicator();
    }
}