CipherMode PaddingMode| SymmetricAlgorithm |
| Name | Description |
|---|---|
| CipherMode | A defined set of cipher modes the algorithms can use. |
| PaddingMode | A defined set of padding modes used to fill the end of non-blocksize length data blocks. For example if an algorithm has a blocksize of 8 bytes and the data is 3 bytes in length, then 5 bytes of padding must be applied. |
| Name | Description |
|---|---|
 BlockSize (get) | Gets the block size, in bits, used by the cryptographic operation. |
| BlockSize (let) | Sets the block size, in bits, used by the cryptographic operation. |
| FeedbackSize (get) | Gets the feedback size, in bits, used by the cryptographic operation. |
| FeedbackSize (let) | Sets the feedback size, in bits, used by the cryptographic operation. |
| IV (get) | Gets the initialization vector (IV) for the symmetric algorithm. |
| IV (let) | Sets the initialization vector (IV) for the symmetric algorithm. |
| Key (get) | Gets the secret key for the symmetric algorithm. |
| Key (let) | Gets the secret key for the symmetric algorithm. |
| KeySize (get) | Gets the size of the key, in bits, used by the symmetric algorithm. |
| KeySize (let) | Gets the size of the key, in bits, used by the symmetric algorithm. |
| LegalBlockSizes (get) | Gets the block sizes, in bits, that are supported by the symmetric algorithm. |
| LegalKeySizes (get) | Gets the key sizes, in bits, that are supported by the symmetric algorithm. |
| Mode (get) | Gets the mode for operation of the symmetric algorithm. |
| Mode (let) | Sets the mode for operation of the symmetric algorithm. |
| Padding (get) | Gets the padding mode used in the symmetric algorithm. |
| Padding (let) | Gets the padding mode used in the symmetric algorithm. |
| Name | Description |
|---|---|
 Clear | Releases all resources used by the SymmetricAlgorithm class. |
 CreateDecryptor | When implemented by a class, creates a symmetric decryptor object with the specified Key property and initialization vector (IV). |
| CreateEncryptor | When implemented by a class, creates a symmetric encryptor object with the specified Key property and initialization vector (IV). |
| Equals | Returns if this instance and the value are equal. |
| GenerateIV | When implemented by a class, generates a random initialization vector (IV) to use for the algorithm. |
| GenerateKey | When implemented ba a class, generates a random key (Key) to use for the algorithm. |
| GetHashCode | Returns a semi-unique value that represents this instance. |
| ToString | Returns a string representation of this instance. |
| ValidKeySize | Determines whether the specified key size is valid for the current algorithm. |
A symmetric algorithm is one that uses the same Key and Initialization Vector to both encrypt and decrypt data.
For one of the symmetric algorithms to work, a Key and Initialization Vector needs to be supplied to the Crypto Service Provider.
RijndaelManaged, DESCryptoServiceProvider, RC2CryptoServiceProvider, and TripleDESCryptoServiceProvider are implementations of symmetric algorithms.