SymmetricAlgorithm.CreateEncryptor Método

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

Devoluções

Um objeto encriptador simétrico.

Exemplos

O exemplo seguinte encripta uma cadeia usando o objeto transformado devolvido pelo CreateEncryptor método.

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

Observações

Se a propriedade atual Key for , o GenerateKey método é chamado para criar um novo aleatório Keynull. Se a propriedade atual IV for , o GenerateIV método é chamado para criar um novo aleatório IVnull.

Use a CreateDecryptor sobrecarga com a mesma assinatura para desencriptar o resultado deste método.

Ver também

• Serviços de criptografia

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);

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

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

Parâmetros

Devoluções

Um objeto encriptador simétrico.

Observações

Use a CreateDecryptor sobrecarga com os mesmos parâmetros para desencriptar o resultado deste método.

Ver também

• Serviços de criptografia