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 Perl Module Downloads for Windows, Linux, and MAC OS X

use chilkat();

$crypt = new chilkat::CkCrypt2();

$success = $crypt->UnlockComponent("Anything for 30-day trial");
if ($success != 1) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

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

$pw = "password";
$pwCharset = "ansi";
#  Hash algorithms may be: sha1, md2, md5, etc.
$hashAlg = "sha1";
#  The salt should be 8 bytes:
$saltHex = "78578E5A5D63CB06";
$iterationCount = 2048;
#  Derive a 192-bit key from the password.
$outputBitLen = 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.)
$enc = "hex";

$hexKey = $crypt->pbkdf2($pw,$pwCharset,$hashAlg,$saltHex,$iterationCount,$outputBitLen,$enc);

print $hexKey . "\r\n";

#  The output should have this value:
#  BFDE6BE94DF7E11DD409BCE20A0255EC327CB936FFE93643