AsymmetricAlgorithm.KeySize Property

 
System_CAPS_noteNote

The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Gets or sets the size, in bits, of the key modulus used by the asymmetric algorithm.

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

Public Overridable Property KeySize As Integer

Property Value

Type: System.Int32

The size, in bits, of the key modulus used by the asymmetric algorithm.

Exception Condition
CryptographicException

The key modulus size is invalid.

The valid key sizes are specified by the particular implementation of the asymmetric algorithm and are listed in the LegalKeySizes property.

The following code example demonstrates how to override the KeySize property to verify that it falls within the range identified in the local keySizes member variable. This code example is part of a larger example provided for the AsymmetricAlgorithm class.

Public Overrides Property KeySize() As Integer
    Get
        Return KeySizeValue
    End Get
    Set(ByVal Value As Integer)
        For i As Int16 = 0 To keySizes.Length - 1 Step i
            If (keySizes(i).SkipSize.Equals(0)) Then
                If (keySizes(i).MinSize.Equals(Value)) Then
                    KeySizeValue = Value
                    Return
                End If
            Else
                For j As Integer = keySizes(i).MinSize _
                    To keySizes(i).MaxSize _
                    Step keySizes(i).SkipSize
                    If (j.Equals(Value)) Then
                        KeySizeValue = Value
                        Return
                    End If
                Next
            End If
        Next
        ' If the key does not fall within the range identified 
        ' in the keySizes member variable, throw an exception.
        Throw New CryptographicException("Invalid key size.")
    End Set
End Property

.NET Framework
Available since 1.1
Windows Phone Silverlight
Available since 7.1
Return to top
Show: