AesManaged.CreateEncryptor メソッド

定義

名前空間:
System.Security.Cryptography
アセンブリ:
netstandard.dll, System.Security.Cryptography.dll
アセンブリ:
netstandard.dll, System.Security.Cryptography.Algorithms.dll
アセンブリ:
System.Security.Cryptography.Algorithms.dll
アセンブリ:
System.Core.dll
アセンブリ:
netstandard.dll

対称暗号化オブジェクトを作成します。

オーバーロード

名前 説明
CreateEncryptor()

現在のキーと初期化ベクトル (IV) を使用して対称暗号化オブジェクトを作成します。
CreateEncryptor(Byte[], Byte[])

指定したキーと初期化ベクトル (IV) を使用して対称暗号化オブジェクトを作成します。

CreateEncryptor()

ソース:
AesManaged.cs
ソース:
AesManaged.cs
ソース:
AesManaged.cs
ソース:
AesManaged.cs
ソース:
AesManaged.cs

現在のキーと初期化ベクトル (IV) を使用して対称暗号化オブジェクトを作成します。

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

返品

ICryptoTransform

対称暗号化オブジェクト。

適用対象

CreateEncryptor(Byte[], Byte[])

ソース:
AesManaged.cs
ソース:
AesManaged.cs
ソース:
AesManaged.cs
ソース:
AesManaged.cs
ソース:
AesManaged.cs

指定したキーと初期化ベクトル (IV) を使用して対称暗号化オブジェクトを作成します。

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

パラメーター

rgbKeykey
Byte[]

対称アルゴリズムに使用する秘密鍵。

rgbIViv
Byte[]

対称アルゴリズムに使用する初期化ベクトル。

返品

ICryptoTransform

対称暗号化オブジェクト。

例外

ArgumentNullException

key または iv が null。

ArgumentException

key が無効です。

例

次の例は、 CreateEncryptor メソッドを使用してメッセージを暗号化する方法を示しています。 このコード例は、 AesManaged クラスに提供されるより大きな例の一部です。

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()

適用対象