VB.NET

PBKDF2 - Derive Key from Password

See more Encryption Examples

Demonstrates how to derive a symmetric encryption key from a password using PBKDF2. VB.NET

' 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