AesManaged Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Provides a managed implementation of the Advanced Encryption Standard (AES) symmetric algorithm.
System.Security.Cryptography::SymmetricAlgorithm
System.Security.Cryptography::Aes
System.Security.Cryptography::AesManaged
Assembly: System.Core (in System.Core.dll)
The AesManaged type exposes the following members.
| Name | Description | |
|---|---|---|
 | BlockSize | Gets or sets the block size, in bits, of the cryptographic operation. (Inherited from SymmetricAlgorithm.) |
| IV | Gets or sets the initialization vector (IV) to use for the symmetric algorithm. (Overrides SymmetricAlgorithm::IV.) |
| Key | Gets or sets the secret key used for the symmetric algorithm. (Overrides SymmetricAlgorithm::Key.) |
| KeySize | Gets or sets the size, in bits, of the secret key used for the symmetric algorithm. (Overrides SymmetricAlgorithm::KeySize.) |
| LegalBlockSizes | Gets the block sizes, in bits, that are supported by the symmetric algorithm. (Inherited from SymmetricAlgorithm.) |
| LegalKeySizes | Gets the key sizes, in bits, that are supported by the symmetric algorithm. (Inherited from SymmetricAlgorithm.) |
| Name | Description | |
|---|---|---|
 | Clear | Releases all resources used by the SymmetricAlgorithm class. (Inherited from SymmetricAlgorithm.) |
| CreateDecryptor() | Creates a symmetric decryptor object using the current key and initialization vector (IV). (Overrides SymmetricAlgorithm::CreateDecryptor().) |
| CreateDecryptor(array<Byte>, array<Byte>) | Creates a symmetric decryptor object using the specified key and initialization vector (IV). (Overrides SymmetricAlgorithm::CreateDecryptor(array<Byte>, array<Byte>).) |
| CreateEncryptor() | Creates a symmetric encryptor object using the current key and initialization vector (IV). (Overrides SymmetricAlgorithm::CreateEncryptor().) |
| CreateEncryptor(array<Byte>, array<Byte>) | Creates a symmetric encryptor object using the specified key and initialization vector (IV). (Overrides SymmetricAlgorithm::CreateEncryptor(array<Byte>, array<Byte>).) |
 | Dispose | Releases the unmanaged resources used by the SymmetricAlgorithm and optionally releases the managed resources. (Inherited from SymmetricAlgorithm.) |
| Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
| GenerateIV | Generates a random initialization vector (IV) to use for the symmetric algorithm. (Overrides SymmetricAlgorithm::GenerateIV().) |
| GenerateKey | Generates a random key to use for the symmetric algorithm. (Overrides SymmetricAlgorithm::GenerateKey().) |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| ValidKeySize | Determines whether the specified key size is valid for the current algorithm. (Inherited from SymmetricAlgorithm.) |
| Name | Description | |
|---|---|---|
 | BlockSizeValue | Represents the block size, in bits, of the cryptographic operation. (Inherited from SymmetricAlgorithm.) |
| IVValue | Represents the initialization vector (IV) for the symmetric algorithm. (Inherited from SymmetricAlgorithm.) |
| KeySizeValue | Represents the size, in bits, of the secret key used by the symmetric algorithm. (Inherited from SymmetricAlgorithm.) |
| KeyValue | Represents the secret key for the symmetric algorithm. (Inherited from SymmetricAlgorithm.) |
| LegalBlockSizesValue | Specifies the block sizes, in bits, that are supported by the symmetric algorithm. (Inherited from SymmetricAlgorithm.) |
| LegalKeySizesValue | Specifies the key sizes, in bits, that are supported by the symmetric algorithm. (Inherited from SymmetricAlgorithm.) |
| Name | Description | |
|---|---|---|
  | IDisposable::Dispose | Infrastructure. Releases the unmanaged resources used by the SymmetricAlgorithm and optionally releases the managed resources. (Inherited from SymmetricAlgorithm.) |
The AES algorithm is essentially the Rijndael symmetric algorithm with a fixed block size and iteration count. This class functions the same way as the .NET Framework RijndaelManaged class but limits blocks to 128 bits and does not allow feedback modes.
The cipher mode is always CBC, and the padding mode is always PKCS7.
The following example demonstrates how to encrypt and decrypt an isolated storage file by using the AesManaged class. To build and run this example, create a Windows Phone app in Visual Studio named AesManaged and replace the MainPage.xaml file and the MainPage.xaml.cs (or MainPage.xaml.vb) file with the following code.
 Note: |
|---|
If the XAML code is not displayed, click the Language Filter arrow at the top of this page, and select the XAML check box. |