(VB.NET) PBKDF2 - Derive Key from Password
Demonstrates how to derive a symmetric encryption key from a password using PBKDF2. For more information, see https://www.chilkatsoft.com/key_derivation_pbkdf2.asp
' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.
Dim crypt As New Chilkat.Crypt2
Dim pw As String = "password"
Dim pwCharset As String = "utf-8"
' Such as sha256, sha512
Dim hashAlg As String = "sha256"
' 16 bytes
Dim saltHex As String = "78578E5A5D63CB0668AB39B21C8637FA"
Dim iterationCount As Integer = 100000
' Derive a 256-bit key from the password.
Dim outputBitLen As Integer = 256
' The derived key is returned as a hex or base64 encoded string.
' (Note: The salt argument must be a string that also uses
' the same encoding.)
Dim enc As String = "hex"
Dim hexKey As String = crypt.Pbkdf2(pw,pwCharset,hashAlg,saltHex,iterationCount,outputBitLen,enc)
Debug.WriteLine(hexKey)
' Sample output:
' AE96E261E32792D0FD6F0E72F8E872D046F7DB4C1FA7C83892EC73C49F461B70
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