X509KeyUsageExtension Konstruktor
Definisi
Penting
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Menginisialisasi instans baru kelas X509KeyUsageExtension.
Overload
X509KeyUsageExtension() |
Menginisialisasi instans baru kelas X509KeyUsageExtension. |
X509KeyUsageExtension(AsnEncodedData, Boolean) |
Menginisialisasi instans X509KeyUsageExtension baru kelas menggunakan AsnEncodedData objek dan nilai yang mengidentifikasi apakah ekstensi sangat penting. |
X509KeyUsageExtension(X509KeyUsageFlags, Boolean) |
Menginisialisasi instans X509KeyUsageExtension baru kelas menggunakan nilai yang ditentukan X509KeyUsageFlags dan nilai yang mengidentifikasi apakah ekstensi sangat penting. |
X509KeyUsageExtension()
- Sumber:
- X509KeyUsageExtension.cs
- Sumber:
- X509KeyUsageExtension.cs
- Sumber:
- X509KeyUsageExtension.cs
Menginisialisasi instans baru kelas X509KeyUsageExtension.
public:
X509KeyUsageExtension();
public X509KeyUsageExtension ();
Public Sub New ()
Contoh
Contoh kode berikut menunjukkan cara membuka penyimpanan sertifikat pribadi pengguna dan menampilkan informasi tentang setiap sertifikat di penyimpanan. Contoh ini menggunakan X509KeyUsageExtension kelas untuk menampilkan informasi.
#using <System.dll>
#using <system.security.dll>
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;
int main()
{
try
{
X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser );
store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly) );
X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
for ( int i = 0; i < collection->Count; i++ )
{
System::Collections::IEnumerator^ myEnum = collection[ i ]->Extensions->GetEnumerator();
while ( myEnum->MoveNext() )
{
X509Extension^ extension = safe_cast<X509Extension^>(myEnum->Current);
Console::WriteLine( L"{0}({1})", extension->Oid->FriendlyName, extension->Oid->Value );
if ( extension->Oid->FriendlyName == L"Key Usage" )
{
X509KeyUsageExtension^ ext = dynamic_cast<X509KeyUsageExtension^>(extension);
Console::WriteLine( ext->KeyUsages );
}
if ( extension->Oid->FriendlyName == L"Basic Constraints" )
{
X509BasicConstraintsExtension^ ext = dynamic_cast<X509BasicConstraintsExtension^>(extension);
Console::WriteLine( ext->CertificateAuthority );
Console::WriteLine( ext->HasPathLengthConstraint );
Console::WriteLine( ext->PathLengthConstraint );
}
if ( extension->Oid->FriendlyName == L"Subject Key Identifier" )
{
X509SubjectKeyIdentifierExtension^ ext = dynamic_cast<X509SubjectKeyIdentifierExtension^>(extension);
Console::WriteLine( ext->SubjectKeyIdentifier );
}
if ( extension->Oid->FriendlyName == L"Enhanced Key Usage" )
{
X509EnhancedKeyUsageExtension^ ext = dynamic_cast<X509EnhancedKeyUsageExtension^>(extension);
OidCollection^ oids = ext->EnhancedKeyUsages;
System::Collections::IEnumerator^ myEnum1 = oids->GetEnumerator();
while ( myEnum1->MoveNext() )
{
Oid^ oid = safe_cast<Oid^>(myEnum1->Current);
Console::WriteLine( L"{0}({1})", oid->FriendlyName, oid->Value );
}
}
}
}
store->Close();
}
catch ( CryptographicException^ )
{
Console::WriteLine( L"Information could not be written out for this certificate." );
}
}
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
public class CertSelect
{
public static void Main()
{
try
{
X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
for (int i = 0; i < collection.Count; i++)
{
foreach (X509Extension extension in collection[i].Extensions)
{
Console.WriteLine(extension.Oid.FriendlyName + "(" + extension.Oid.Value + ")");
if (extension.Oid.FriendlyName == "Key Usage")
{
X509KeyUsageExtension ext = (X509KeyUsageExtension)extension;
Console.WriteLine(ext.KeyUsages);
}
if (extension.Oid.FriendlyName == "Basic Constraints")
{
X509BasicConstraintsExtension ext = (X509BasicConstraintsExtension)extension;
Console.WriteLine(ext.CertificateAuthority);
Console.WriteLine(ext.HasPathLengthConstraint);
Console.WriteLine(ext.PathLengthConstraint);
}
if (extension.Oid.FriendlyName == "Subject Key Identifier")
{
X509SubjectKeyIdentifierExtension ext = (X509SubjectKeyIdentifierExtension)extension;
Console.WriteLine(ext.SubjectKeyIdentifier);
}
if (extension.Oid.FriendlyName == "Enhanced Key Usage")
{
X509EnhancedKeyUsageExtension ext = (X509EnhancedKeyUsageExtension)extension;
OidCollection oids = ext.EnhancedKeyUsages;
foreach (Oid oid in oids)
{
Console.WriteLine(oid.FriendlyName + "(" + oid.Value + ")");
}
}
}
}
store.Close();
}
catch (CryptographicException)
{
Console.WriteLine("Information could not be written out for this certificate.");
}
}
}
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates
Module CertSelect
Sub Main()
Try
Dim store As New X509Store("MY", StoreLocation.CurrentUser)
store.Open(OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly)
Dim collection As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection)
For i As Integer = 0 To collection.Count - 1
Dim extension As X509Extension
For Each extension In collection(i).Extensions
Console.WriteLine(extension.Oid.FriendlyName + "(" + extension.Oid.Value + ")")
If extension.Oid.FriendlyName = "Key Usage" Then
Dim ext As X509KeyUsageExtension = CType(extension, X509KeyUsageExtension)
Console.WriteLine(ext.KeyUsages)
End If
If extension.Oid.FriendlyName = "Basic Constraints" Then
Dim ext As X509BasicConstraintsExtension = CType(extension, X509BasicConstraintsExtension)
Console.WriteLine(ext.CertificateAuthority)
Console.WriteLine(ext.HasPathLengthConstraint)
Console.WriteLine(ext.PathLengthConstraint)
End If
If extension.Oid.FriendlyName = "Subject Key Identifier" Then
Dim ext As X509SubjectKeyIdentifierExtension = CType(extension, X509SubjectKeyIdentifierExtension)
Console.WriteLine(ext.SubjectKeyIdentifier)
End If
If extension.Oid.FriendlyName = "Enhanced Key Usage" Then
Dim ext As X509EnhancedKeyUsageExtension = CType(extension, X509EnhancedKeyUsageExtension)
Dim oids As OidCollection = ext.EnhancedKeyUsages
Dim oid As Oid
For Each oid In oids
Console.WriteLine(oid.FriendlyName + "(" + oid.Value + ")")
Next oid
End If
Next extension
Next i
store.Close()
Catch
Console.WriteLine("Information could not be written out for this certificate.")
End Try
End Sub
End Module
Berlaku untuk
X509KeyUsageExtension(AsnEncodedData, Boolean)
- Sumber:
- X509KeyUsageExtension.cs
- Sumber:
- X509KeyUsageExtension.cs
- Sumber:
- X509KeyUsageExtension.cs
Menginisialisasi instans X509KeyUsageExtension baru kelas menggunakan AsnEncodedData objek dan nilai yang mengidentifikasi apakah ekstensi sangat penting.
public:
X509KeyUsageExtension(System::Security::Cryptography::AsnEncodedData ^ encodedKeyUsage, bool critical);
public X509KeyUsageExtension (System.Security.Cryptography.AsnEncodedData encodedKeyUsage, bool critical);
new System.Security.Cryptography.X509Certificates.X509KeyUsageExtension : System.Security.Cryptography.AsnEncodedData * bool -> System.Security.Cryptography.X509Certificates.X509KeyUsageExtension
Public Sub New (encodedKeyUsage As AsnEncodedData, critical As Boolean)
Parameter
- encodedKeyUsage
- AsnEncodedData
Data yang dikodekan untuk digunakan untuk membuat ekstensi.
- critical
- Boolean
true
jika ekstensi sangat penting; jika tidak, false
.
Keterangan
Gunakan konstruktor ini jika informasi untuk membuat ekstensi sudah ada dalam AsnEncodedData objek.
Berlaku untuk
X509KeyUsageExtension(X509KeyUsageFlags, Boolean)
- Sumber:
- X509KeyUsageExtension.cs
- Sumber:
- X509KeyUsageExtension.cs
- Sumber:
- X509KeyUsageExtension.cs
Menginisialisasi instans X509KeyUsageExtension baru kelas menggunakan nilai yang ditentukan X509KeyUsageFlags dan nilai yang mengidentifikasi apakah ekstensi sangat penting.
public:
X509KeyUsageExtension(System::Security::Cryptography::X509Certificates::X509KeyUsageFlags keyUsages, bool critical);
public X509KeyUsageExtension (System.Security.Cryptography.X509Certificates.X509KeyUsageFlags keyUsages, bool critical);
new System.Security.Cryptography.X509Certificates.X509KeyUsageExtension : System.Security.Cryptography.X509Certificates.X509KeyUsageFlags * bool -> System.Security.Cryptography.X509Certificates.X509KeyUsageExtension
Public Sub New (keyUsages As X509KeyUsageFlags, critical As Boolean)
Parameter
- keyUsages
- X509KeyUsageFlags
Salah X509KeyUsageFlags satu nilai yang menjelaskan cara menggunakan kunci.
- critical
- Boolean
true
jika ekstensi sangat penting; jika tidak, false
.