SymmetricAlgorithm.CreateEncryptor Método
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Crea un objeto cifrador simétrico.
Sobrecargas
CreateEncryptor() |
Crea un objeto cifrador simétrico con la propiedad Key y el vector de inicialización (IV) actuales. |
CreateEncryptor(Byte[], Byte[]) |
Cuando se invalida en una clase derivada, se crea un objeto descifrador simétrico con la propiedad Key y el vector de inicialización (IV) especificados. |
CreateEncryptor()
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
Devoluciones
Objeto cifrador simétrico.
Ejemplos
En el ejemplo siguiente se cifra una cadena mediante el objeto transform devuelto por el CreateEncryptor método .
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
Comentarios
Si la propiedad actual Key es null
, GenerateKey se llama al método para crear un nuevo aleatorio Key. Si la propiedad actual IV es null
, GenerateIV se llama al método para crear un nuevo aleatorio IV.
Use la CreateDecryptor sobrecarga con la misma firma para descifrar el resultado de este método.
Consulte también
Se aplica a
CreateEncryptor(Byte[], Byte[])
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
Parámetros
- rgbKey
- Byte[]
Clave secreta que se va a usar para el algoritmo simétrico.
- rgbIV
- Byte[]
Vector de inicialización que se va a usar para el algoritmo simétrico.
Devoluciones
Objeto cifrador simétrico.
Comentarios
Use la CreateDecryptor sobrecarga con los mismos parámetros para descifrar el resultado de este método.