KeyGenerator.GenerateDESKey Method (Int32, Byte[], Byte[])

[Starting with the .NET Framework 4.5, Windows Identity Foundation (WIF) has been fully integrated into the .NET Framework. The version of WIF addressed by this topic, WIF 3.5, is deprecated and should only be used when developing against the .NET Framework 3.5 SP1 or the .NET Framework 4. For more information about WIF in the .NET Framework 4.5, also known as WIF 4.5, see the Windows Identity Foundation documentation in the .NET Framework 4.5 Development Guide.]

Generates a combined-entropy key for use with the DES or Triple-DES algorithms. This function will always return a key that is not considered weak by TripleDES.IsWeakKey().

Namespace: Microsoft.IdentityModel
Assembly: Microsoft.IdentityModel (in Microsoft.IdentityModel.dll)


Dim keySizeInBits As Integer
Dim senderEntropy As Byte()
Dim receiverEntropy As Byte()
Dim returnValue As Byte()

returnValue = KeyGenerator.GenerateDESKey(keySizeInBits, senderEntropy, receiverEntropy)


Public Shared Function GenerateDESKey ( _
    keySizeInBits As Integer, _
    senderEntropy As Byte(), _
    <OutAttribute> ByRef receiverEntropy As Byte() _
) As Byte()
public static byte[] GenerateDESKey (
    int keySizeInBits,
    byte[] senderEntropy,
    out byte[] receiverEntropy
static array<unsigned char>^ GenerateDESKey (
    int keySizeInBits, 
    array<unsigned char>^ senderEntropy, 
    [OutAttribute] array<unsigned char>^% receiverEntropy
public static byte[] GenerateDESKey (
    int keySizeInBits, 
    byte[] senderEntropy, 
    /** @attribute OutAttribute() */ /** @ref */ byte[] receiverEntropy


  • keySizeInBits
    The key size in bits.
  • senderEntropy
    Requestor's entropy.
  • receiverEntropy
    The issuer's entropy.

Return Value

The computed symmetric key based on PSHA1 algorithm.


Exception type Condition

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.


Target Platforms

Windows 7, Windows Server 2008 R2, Windows Vista SP2, Windows Server 2008 SP2, Windows Server 2003 SP2 (32-bit or 64-bit)

See Also


KeyGenerator Class
KeyGenerator Members
Microsoft.IdentityModel Namespace

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