DES.Key Property


Gets or sets the secret key for the Data Encryption Standard (DES) algorithm.

Namespace:   System.Security.Cryptography
Assembly:  mscorlib (in mscorlib.dll)

override Key : byte[] with get, set

Property Value

Type: System.Byte[]

The secret key for the DES algorithm.

Exception Condition

An attempt was made to set the key to null.


An attempt was made to set a key whose length is not equal to BlockSizeValue.


An attempt was made to set a weak key (see IsWeakKey) or a semi-weak key (see IsSemiWeakKey).

If this property is null when it is used, GenerateKey is called to create a new random value.

The length of the key must be equal to BlockSizeValue.

This algorithm supports a key length of 64 bits.

.NET Framework
Available since 1.1
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