AesManaged.CreateEncryptor Método

Definición

Espacio de nombres:

System.Security.Cryptography

Ensamblado:

System.Security.Cryptography.Algorithms.dll

Ensamblado:

System.Security.Cryptography.dll

Ensamblado:

System.Core.dll

Ensamblado:

netstandard.dll

Crea un objeto cifrador simétrico.

Sobrecargas

CreateEncryptor()	Crea un objeto cifrador simétrico que utiliza la clave y el vector de inicialización (IV) actuales.
CreateEncryptor(Byte[], Byte[])	Crea un objeto cifrador simétrico que utiliza la clave y el vector de inicialización (IV) especificados.

CreateEncryptor()

Crea un objeto cifrador simétrico que utiliza la clave y el vector de inicialización (IV) actuales.

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

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

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

Public Overrides Function CreateEncryptor () As ICryptoTransform

Devoluciones

ICryptoTransform

Objeto cifrador simétrico.

CreateEncryptor(Byte[], Byte[])

Crea un objeto cifrador simétrico que utiliza la clave y el vector de inicialización (IV) especificados.

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

public:
 override System::Security::Cryptography::ICryptoTransform ^ CreateEncryptor(cli::array <System::Byte> ^ key, cli::array <System::Byte> ^ iv);

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

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

public override System.Security.Cryptography.ICryptoTransform CreateEncryptor (byte[] key, byte[] iv);

override this.CreateEncryptor : byte[] * byte[] -> System.Security.Cryptography.ICryptoTransform

override this.CreateEncryptor : byte[] * byte[] -> System.Security.Cryptography.ICryptoTransform

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

Public Overrides Function CreateEncryptor (key As Byte(), iv As Byte()) As ICryptoTransform

Parámetros

rgbKeykey

Byte[]

Clave secreta que se va a usar para el algoritmo simétrico.

rgbIViv

Byte[]

Vector de inicialización que se va a usar para el algoritmo simétrico.

Devoluciones

ICryptoTransform

Objeto cifrador simétrico.

Excepciones

ArgumentNullException

key o iv es null.

ArgumentException

key no es válido.

Ejemplos

En el ejemplo siguiente se muestra cómo usar el CreateEncryptor método para cifrar un mensaje. Este ejemplo de código forma parte de un ejemplo más grande proporcionado para la AesManaged clase .

static byte[] EncryptStringToBytes_Aes(string plainText, byte[] Key, byte[] IV)
{
    // Check arguments.
    if (plainText == null || plainText.Length <= 0)
        throw new ArgumentNullException("plainText");
    if (Key == null || Key.Length <= 0)
        throw new ArgumentNullException("Key");
    if (IV == null || IV.Length <= 0)
        throw new ArgumentNullException("IV");
    byte[] encrypted;

    // Create an AesManaged object
    // with the specified key and IV.
    using (AesManaged aesAlg = new AesManaged())
    {
        aesAlg.Key = Key;
        aesAlg.IV = IV;

        // Create an encryptor to perform the stream transform.
        ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

        // Create the streams used for encryption.
        using (MemoryStream msEncrypt = new MemoryStream())
        {
            using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
            {
                using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
                {
                    //Write all data to the stream.
                    swEncrypt.Write(plainText);
                }
                encrypted = msEncrypt.ToArray();
            }
        }
    }

    // Return the encrypted bytes from the memory stream.
    return encrypted;
}

Shared Function EncryptStringToBytes_Aes(ByVal plainText As String, ByVal Key() As Byte, ByVal IV() As Byte) As Byte()
    ' Check arguments.
    If plainText Is Nothing OrElse plainText.Length <= 0 Then
        Throw New ArgumentNullException("plainText")
    End If
    If Key Is Nothing OrElse Key.Length <= 0 Then
        Throw New ArgumentNullException("Key")
    End If
    If IV Is Nothing OrElse IV.Length <= 0 Then
        Throw New ArgumentNullException("IV")
    End If
    Dim encrypted() As Byte
    
    ' Create an AesManaged object
    ' with the specified key and IV.
    Using aesAlg As New AesManaged()

        aesAlg.Key = Key
        aesAlg.IV = IV

        ' Create an encryptor to perform the stream transform.
        Dim encryptor As ICryptoTransform = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV)
        ' Create the streams used for encryption.
        Using msEncrypt As New MemoryStream()
            Using csEncrypt As New CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)
                Using swEncrypt As New StreamWriter(csEncrypt)
                    'Write all data to the stream.
                    swEncrypt.Write(plainText)
                End Using
                encrypted = msEncrypt.ToArray()
            End Using
        End Using
    End Using

    ' Return the encrypted bytes from the memory stream.
    Return encrypted

End Function 'EncryptStringToBytes_Aes

let encryptStringToBytes_Aes (plainText: string, key : byte[], iv : byte[]) : byte[] =

    // Check arguments.
    if (isNull plainText || plainText.Length <= 0) then nullArg "plainText"
    if (isNull key || key.Length <= 0) then nullArg "key"
    if (isNull iv || iv.Length <= 0) then nullArg "iv"
    
    // Create an AesManaged object
    // with the specified key and IV.
    use aesAlg = new AesManaged()
    aesAlg.Key <- key
    aesAlg.IV <- iv

    // Create an encryptor to perform the stream transform.
    let encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV)

    // Create the streams used for encryption.
    use msEncrypt = new MemoryStream()
    use csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)
    use swEncrypt = new StreamWriter(csEncrypt)
    
    //Write all data to the stream.
    swEncrypt.Write(plainText)
    swEncrypt.Flush()
    
    // Return the encrypted bytes from the memory stream.
    msEncrypt.ToArray()