X500DistinguishedName.Decode(X500DistinguishedNameFlags) 方法

定義

命名空間:

System.Security.Cryptography.X509Certificates

組件:

System.Security.Cryptography.dll

來源:

X500DistinguishedName.cs

使用 flag 參數所指定的特性，對辨別名稱進行解碼。

public:
 System::String ^ Decode(System::Security::Cryptography::X509Certificates::X500DistinguishedNameFlags flag);

public string Decode (System.Security.Cryptography.X509Certificates.X500DistinguishedNameFlags flag);

member this.Decode : System.Security.Cryptography.X509Certificates.X500DistinguishedNameFlags -> string

Public Function Decode (flag As X500DistinguishedNameFlags) As String

參數

flag

X500DistinguishedNameFlags

列舉值的位元組合，這些值會指定辨別名稱的特性。

傳回

String

解碼的辨別名稱。

例外狀況

CryptographicException

憑證的名稱無效。

範例

下列程式碼範例示範如何使用 X500DistinguishedName 類別。

using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

class X500Sample
{
    static void Main()
    {
        try
        {
            X509Store store = new("MY", StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
            X509Certificate2Collection collection = store.Certificates;
            X509Certificate2Collection fcollection = collection.Find(
                X509FindType.FindByTimeValid,
                DateTime.Now, false
                );
            X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(
                fcollection,
                "Test Certificate Select",
                "Select a certificate from the following list to get information on that certificate",
                X509SelectionFlag.MultiSelection
                );
            Console.WriteLine($"Number of certificates: {scollection.Count}{Environment.NewLine}");
            foreach (X509Certificate2 x509 in scollection)
            {
                X500DistinguishedName dname = new(
                    x509.SubjectName.Name,
                    X500DistinguishedNameFlags.Reversed | X500DistinguishedNameFlags.UseSemicolons
                    );
                Console.WriteLine("X500DistinguishedName: {0}{1}", dname.Name, Environment.NewLine);
                x509.Reset();
            }
            store.Close();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for this certificate.");
        }
    }
}

Imports System.Security.Cryptography.X509Certificates

Class X500Sample
    Shared s_msg As String
    Shared Sub Main()

        Try
            Dim store As New X509Store("MY", StoreLocation.CurrentUser)
            store.Open(OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly)
            Dim collection As X509Certificate2Collection = store.Certificates
            Dim fcollection As X509Certificate2Collection = collection.Find(X509FindType.FindByTimeValid, Date.Now, False)
            Dim scollection As X509Certificate2Collection = X509Certificate2UI.SelectFromCollection(
                fcollection,
                "Test Certificate Select",
                "Select a certificate from the following list to get information on that certificate",
                X509SelectionFlag.MultiSelection
                )
            s_msg = "Number of certificates: " & scollection.Count & Environment.NewLine
            Console.WriteLine(s_msg)
            Dim x509 As X509Certificate2
            For Each x509 In scollection
                Dim dname As New X500DistinguishedName(
                x509.SubjectName.Name,
                X500DistinguishedNameFlags.Reversed Or X500DistinguishedNameFlags.UseSemicolons
                )
                s_msg = "X500DistinguishedName: " & dname.Name & Environment.NewLine
                Console.WriteLine(s_msg)
                x509.Reset()
            Next x509
            store.Close()
        Catch e As Exception
            s_msg = "Error: Information could not be written out for this certificate."
            Console.WriteLine(s_msg)
        End Try
    End Sub
End Class

備註

這個方法會將 ASN 編碼的辨別名稱譯碼為字串值。