IPWorks SNMP 2020 .NET Edition

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HashPassword Event

Fired before and after a password is hashed.

Syntax

public event OnHashPasswordHandler OnHashPassword;

public delegate void OnHashPasswordHandler(object sender, SnmpmgrHashPasswordEventArgs e);

public class SnmpmgrHashPasswordEventArgs : EventArgs {
  public string Password { get; }
  public int AuthAlgorithm { get; }
  public string Hash { get; set; }
}
Public Event OnHashPassword As OnHashPasswordHandler

Public Delegate Sub OnHashPasswordHandler(sender As Object, e As SnmpmgrHashPasswordEventArgs)

Public Class SnmpmgrHashPasswordEventArgs Inherits EventArgs
  Public ReadOnly Property Password As String
  Public ReadOnly Property AuthAlgorithm As Integer
  Public Property Hash As String
End Class

Remarks

SNMPv3 passwords are hashed in order to obtain authentication and encryption keys. This is an expensive operation, and in certain situations it may be preferable to store the hashed passwords externally and supply them on demand.

If a hash is required, the event fires with an empty string in the Hash parameter. In this case, you can choose to supply a value for the hash and stop the component from computing the hash.

The event also fires every time a hash is computed. In this case, the Hash parameter contains the value of the computed hash.

AuthAlgorithm contains either 1 for HMAC-MD5-96, 2 for HMAC-SHA-96 or 3 for HMAC-192-SHA-256

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IPWorks SNMP 2020 .NET Edition - Version 20.0 [Build 8202]