AesCryptoServiceProvider.CreateEncryptor Metode

Definisi

Ruang nama:

System.Security.Cryptography

Rakitan:

System.Security.Cryptography.dll

Membuat objek enkripsi AES simetris.

Overload

CreateEncryptor()	Membuat objek enkripsi AES simetris menggunakan kunci saat ini dan vektor inisialisasi (IV).
CreateEncryptor(Byte[], Byte[])	Membuat objek enkripsi simetris menggunakan kunci dan vektor inisialisasi (IV) yang ditentukan.

CreateEncryptor()

Sumber:

AesCryptoServiceProvider.cs

Membuat objek enkripsi AES simetris menggunakan kunci saat ini dan vektor inisialisasi (IV).

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

Mengembalikan

ICryptoTransform

Objek enkripsi AES simetris.

CreateEncryptor(Byte[], Byte[])

Sumber:

AesCryptoServiceProvider.cs

Membuat objek enkripsi simetris menggunakan kunci dan vektor inisialisasi (IV) yang ditentukan.

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

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

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

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

Parameter

rgbKey

Byte[]

Kunci rahasia yang digunakan untuk algoritma simetris.

rgbIV

Byte[]

Vektor inisialisasi yang digunakan untuk algoritma simetris.

Mengembalikan

ICryptoTransform

Objek enkripsi AES simetris.

Pengecualian

ArgumentNullException

Parameter key atau iv adalah null.

ArgumentException

key tidak valid.

Contoh

Contoh berikut menunjukkan cara menggunakan AesCryptoServiceProvider.CreateEncryptor metode untuk mengenkripsi pesan. Contoh kode ini adalah bagian dari contoh yang lebih besar yang disediakan untuk AesCryptoServiceProvider kelas .

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 AesCryptoServiceProvider object
    // with the specified key and IV.
    using (AesCryptoServiceProvider aesAlg = new AesCryptoServiceProvider())
    {
        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 AesCryptoServiceProvider object
    ' with the specified key and IV.
    Using aesAlg As New AesCryptoServiceProvider()

        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.
        Dim 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

    ' 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 AesCryptoServiceProvider object
    // with the specified key and IV.
    use aesAlg = new AesCryptoServiceProvider()
    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()

Keterangan

Lihat contoh kode di LegalKeySizes properti dan LegalBlockSizes untuk menentukan ukuran key parameter dan iv .