(Visual FoxPro) PBKDF2 - Derive Key from Password

Demonstrates how to derive a symmetric encryption key from a password using PBKDF2. This example matches the results found at this URL: http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loCrypt
LOCAL lcHexKey
LOCAL lcPw
LOCAL lcPwCharset
LOCAL lcHashAlg
LOCAL lcSaltHex
LOCAL lnIterationCount
LOCAL lnOutputBitLen
LOCAL lcEnc

* This example assumes the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Crypt2')
loCrypt = CreateObject('Chilkat.Crypt2')

* http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf

lcPw = "password"
lcPwCharset = "ansi"
* Hash algorithms may be: sha1, md2, md5, etc.
lcHashAlg = "sha1"
* The salt should be 8 bytes:
lcSaltHex = "78578E5A5D63CB06"
lnIterationCount = 2048
* Derive a 192-bit key from the password.
lnOutputBitLen = 192

* 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.)
lcEnc = "hex"

lcHexKey = loCrypt.Pbkdf2(lcPw,lcPwCharset,lcHashAlg,lcSaltHex,lnIterationCount,lnOutputBitLen,lcEnc)

? lcHexKey

* The output should have this value:
* BFDE6BE94DF7E11DD409BCE20A0255EC327CB936FFE9364

RELEASE loCrypt