DES Class

Definition

Represents the base class for the Data Encryption Standard (DES) algorithm from which all DES implementations must derive.

public ref class DES abstract : System::Security::Cryptography::SymmetricAlgorithm
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class DES : System.Security.Cryptography.SymmetricAlgorithm
type DES = class
    inherit SymmetricAlgorithm
Public MustInherit Class DES
Inherits SymmetricAlgorithm
Inheritance
Derived
Attributes

Remarks

This algorithm supports a key length of 64 bits.

Note

A newer symmetric encryption algorithm, Advanced Encryption Standard (AES), is available. Consider using the Aes class instead of the DES class. Use DES only for compatibility with legacy applications and data.

Constructors

DES()

Initializes a new instance of the DES 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 Data Encryption Standard (DES) algorithm.

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.

(Inherited from SymmetricAlgorithm)
LegalKeySizes

Gets the key sizes, in bits, that are supported by the symmetric algorithm.

(Inherited from SymmetricAlgorithm)
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 an instance of a cryptographic object to perform the Data Encryption Standard (DES) algorithm.

Create(String)

Creates an instance of a cryptographic object to perform the specified implementation of the Data Encryption Standard (DES) 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)
IsSemiWeakKey(Byte[])

Determines whether the specified key is semi-weak.

IsWeakKey(Byte[])

Determines whether the specified key is weak.

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

See also