-->Definition
13 days ago I am trying to do decryption in Node.js and encryption in C# with AES CBC 256. I have 16 byte key. I need 32 byte for AES CBC 256 method in Node.js. I tried using Buffer.alloc(32,16-byte-key). Dim plaintext As String = Nothing ' Create an Aes object ' with the specified key and IV. Using aesAlg As Aes = Aes.Create aesAlg.Key = Key aesAlg.IV = IV ' Create a decryptor to perform the stream transform. Mar 31, 2015 Hi, Is there a good code sample for doing encryption/decryption using AES 256 using a password and salt value? I am trying to bring a WP7 app to Windows 8. Below is a code sample used in WP7.5 to encrypt /decrypt using AES 256. Private static string Encrypt(string dataToEncrypt, string. The cryptographic operations exposed from WinRT are based.
Represents the abstract base class from which all implementations of the Advanced Encryption Standard (AES) must inherit.
- Derived
Examples
The following example demonstrates how to encrypt and decrypt sample data by using the Aes class.
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Constructors
| Aes() | Initializes a new instance of the Aes class. |
Fields
| BlockSizeValue | Represents the block size, in bits, of the cryptographic operation. (Inherited from SymmetricAlgorithm) |
| FeedbackSizeValue | Represents the feedback 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) |
| ModeValue | Represents the cipher mode used in the symmetric algorithm. (Inherited from SymmetricAlgorithm) |
| PaddingValue | Represents the padding mode used in the symmetric algorithm. (Inherited from SymmetricAlgorithm) |
Properties
| BlockSize | Gets or sets the block size, in bits, of the cryptographic operation. (Inherited from SymmetricAlgorithm) |
| FeedbackSize | Gets or sets the feedback size, in bits, of the cryptographic operation for the Cipher Feedback (CFB) and Output Feedback (OFB) cipher modes. (Inherited from SymmetricAlgorithm) |
| IV | Gets or sets the initialization vector (IV) for the symmetric algorithm. (Inherited from SymmetricAlgorithm) |
| Key | Gets or sets the secret key for the symmetric algorithm. (Inherited from SymmetricAlgorithm) |
| KeySize | Gets or sets the size, in bits, of the secret key used by the symmetric algorithm. (Inherited from SymmetricAlgorithm) |
| LegalBlockSizes | Gets the block sizes, in bits, that are supported by the symmetric algorithm. |
| LegalKeySizes | Gets the key sizes, in bits, that are supported by the symmetric algorithm. |
| Mode | Gets or sets the mode for operation of the symmetric algorithm. (Inherited from SymmetricAlgorithm) |
| Padding | Gets or sets the padding mode used in the symmetric algorithm. (Inherited from SymmetricAlgorithm) |
Methods
| Clear() | Releases all resources used by the SymmetricAlgorithm class. (Inherited from SymmetricAlgorithm) |
| Create() | Creates a cryptographic object that is used to perform the symmetric algorithm. |
| Create(String) | Creates a cryptographic object that specifies the implementation of AES to use to perform the symmetric algorithm. |
| CreateDecryptor() | Creates a symmetric decryptor object with the current Key property and initialization vector (IV). (Inherited from SymmetricAlgorithm) |
| CreateDecryptor(Byte[], Byte[]) | When overridden in a derived class, creates a symmetric decryptor object with the specified Key property and initialization vector (IV). (Inherited from SymmetricAlgorithm) |
| CreateEncryptor() | Creates a symmetric encryptor object with the current Key property and initialization vector (IV). (Inherited from SymmetricAlgorithm) |
| CreateEncryptor(Byte[], Byte[]) | When overridden in a derived class, creates a symmetric encryptor object with the specified Key property and initialization vector (IV). (Inherited from SymmetricAlgorithm) |
| Dispose() | Releases all resources used by the current instance of the SymmetricAlgorithm class. (Inherited from SymmetricAlgorithm) |
| Dispose(Boolean) | 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) |
| GenerateIV() | When overridden in a derived class, generates a random initialization vector (IV) to use for the algorithm. (Inherited from SymmetricAlgorithm) |
| GenerateKey() | When overridden in a derived class, generates a random key (Key) to use for the algorithm. (Inherited from SymmetricAlgorithm) |
| GetHashCode() | Serves as the default hash function. (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(Int32) | Determines whether the specified key size is valid for the current algorithm. (Inherited from SymmetricAlgorithm) |
Explicit Interface Implementations
| IDisposable.Dispose() | Releases the unmanaged resources used by the SymmetricAlgorithm and optionally releases the managed resources. (Inherited from SymmetricAlgorithm) |
Applies to
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| Discusses symmetric encryption key generation techniques for block encryption algorithms such as AES, Blowfish, and Twofish, or for other algorithms such as ChaCha20.
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Aes 256 Key Generator C Program