SymmetricAlgorithm.CreateEncryptor Метод

Исходный код:

SymmetricAlgorithm.cs

Исходный код:

SymmetricAlgorithm.cs

Исходный код:

SymmetricAlgorithm.cs

public:
 virtual System::Security::Cryptography::ICryptoTransform ^ CreateEncryptor();

public virtual System.Security.Cryptography.ICryptoTransform CreateEncryptor ();

abstract member CreateEncryptor : unit -> System.Security.Cryptography.ICryptoTransform
override this.CreateEncryptor : unit -> System.Security.Cryptography.ICryptoTransform

Public Overridable Function CreateEncryptor () As ICryptoTransform

Возвращаемое значение

Симметричный объект-шифратор.

Примеры

В следующем примере строка шифруется с помощью объекта преобразования, возвращаемого методом CreateEncryptor .

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;

class EncryptorExample
{
public:
     static void Main()
     {
         TripleDESCryptoServiceProvider^ tdesCSP = gcnew TripleDESCryptoServiceProvider();

         tdesCSP->GenerateKey();
         tdesCSP->GenerateIV();
         String^ quote =
             "Things may come to those who wait, but only the " +
             "things left by those who hustle. -- Abraham Lincoln";
         array<Byte>^ encQuote = EncryptString(tdesCSP, quote);

         Console::WriteLine("Encrypted Quote:\n");
         Console::WriteLine(Convert::ToBase64String(encQuote));

         Console::WriteLine("\nDecrypted Quote:\n");
         Console::WriteLine(DecryptBytes(tdesCSP, encQuote));
     }

public:
     static array<Byte>^ EncryptString(SymmetricAlgorithm^ symAlg, String^ inString)
     {
         array<Byte>^ inBlock = UnicodeEncoding::Unicode->GetBytes(inString);
         ICryptoTransform^ xfrm = symAlg->CreateEncryptor();
         array<Byte>^ outBlock = xfrm->TransformFinalBlock(inBlock, 0, inBlock->Length);

         return outBlock;
     }

     static String^ DecryptBytes(SymmetricAlgorithm^ symAlg, array<Byte>^ inBytes)
     {
         ICryptoTransform^ xfrm = symAlg->CreateDecryptor();
         array<Byte>^ outBlock = xfrm->TransformFinalBlock(inBytes, 0, inBytes->Length);

         return UnicodeEncoding::Unicode->GetString(outBlock);
     }
};

int main()
{
    EncryptorExample::Main();
}

using System;
using System.Security.Cryptography;
using System.Text;

class EncryptorExample
{
     private static string quote =
         "Things may come to those who wait, but only the " +
         "things left by those who hustle. -- Abraham Lincoln";

     public static void Main()
     {
         AesCryptoServiceProvider aesCSP = new AesCryptoServiceProvider();

         aesCSP.GenerateKey();
         aesCSP.GenerateIV();
         byte[] encQuote = EncryptString(aesCSP, quote);

         Console.WriteLine("Encrypted Quote:\n");
         Console.WriteLine(Convert.ToBase64String(encQuote));

         Console.WriteLine("\nDecrypted Quote:\n");
         Console.WriteLine(DecryptBytes(aesCSP, encQuote));
     }

     public static byte[] EncryptString(SymmetricAlgorithm symAlg, string inString)
     {
         byte[] inBlock = UnicodeEncoding.Unicode.GetBytes(inString);
         ICryptoTransform xfrm = symAlg.CreateEncryptor();
         byte[] outBlock = xfrm.TransformFinalBlock(inBlock, 0, inBlock.Length);

         return outBlock;
     }

     public static string DecryptBytes(SymmetricAlgorithm symAlg, byte[] inBytes)
     {
         ICryptoTransform xfrm = symAlg.CreateDecryptor();
         byte[] outBlock = xfrm.TransformFinalBlock(inBytes, 0, inBytes.Length);

         return UnicodeEncoding.Unicode.GetString(outBlock);
     }
}

Imports System.Security.Cryptography
Imports System.Text

Class EncryptorExample
     Private Shared quote As String = _
         "Things may come to those who wait, but only the " + _
         "things left by those who hustle. -- Abraham Lincoln"

     Public Shared Sub Main()
         Dim aesCSP As New AesCryptoServiceProvider()

         aesCSP.GenerateKey()
         aesCSP.GenerateIV()
         Dim encQuote() As Byte = EncryptString(aesCSP, quote)

         Console.WriteLine("Encrypted Quote:" + Environment.NewLine)
         Console.WriteLine(Convert.ToBase64String(encQuote))

         Console.WriteLine(Environment.NewLine + "Decrypted Quote:" + Environment.NewLine)
         Console.WriteLine(DecryptBytes(aesCSP, encQuote))
     End Sub

     Public Shared Function EncryptString(symAlg As SymmetricAlgorithm, inString As String) As Byte()
         Dim inBlock() As Byte = UnicodeEncoding.Unicode.GetBytes(inString)
         Dim xfrm As ICryptoTransform = symAlg.CreateEncryptor()
         Dim outBlock() As Byte = xfrm.TransformFinalBlock(inBlock, 0, inBlock.Length)

         Return outBlock
     End Function

     Public Shared Function DecryptBytes(symAlg As SymmetricAlgorithm, inBytes() As Byte) As String
         Dim xfrm As ICryptoTransform = symAlg.CreateDecryptor()
         Dim outBlock() As Byte = xfrm.TransformFinalBlock(inBytes, 0, inBytes.Length)

         return UnicodeEncoding.Unicode.GetString(outBlock)
     End Function
End Class

Комментарии

Если текущее Key свойство имеет значение null, GenerateKey вызывается метод для создания нового случайного Key. Если текущее IV свойство имеет значение null, GenerateIV вызывается метод для создания нового случайного IV.

Используйте перегрузку CreateDecryptor с той же сигнатурой для расшифровки результата этого метода.

См. также раздел

• службы шифрования

Исходный код:

SymmetricAlgorithm.cs

Исходный код:

SymmetricAlgorithm.cs

Исходный код:

SymmetricAlgorithm.cs

public:
 abstract System::Security::Cryptography::ICryptoTransform ^ CreateEncryptor(cli::array <System::Byte> ^ rgbKey, cli::array <System::Byte> ^ rgbIV);

public abstract System.Security.Cryptography.ICryptoTransform CreateEncryptor (byte[] rgbKey, byte[]? rgbIV);

public abstract System.Security.Cryptography.ICryptoTransform CreateEncryptor (byte[] rgbKey, byte[] rgbIV);

abstract member CreateEncryptor : byte[] * byte[] -> System.Security.Cryptography.ICryptoTransform

Public MustOverride Function CreateEncryptor (rgbKey As Byte(), rgbIV As Byte()) As ICryptoTransform

Параметры

Возвращаемое значение

Симметричный объект-шифратор.

Комментарии

Используйте перегрузку CreateDecryptor с теми же параметрами для расшифровки результата этого метода.

См. также раздел

• службы шифрования