Perl

PBKDF2 Key Derivation

Demonstrates AES secret key derivation from a password using PBDKF2. Perl

use chilkat();

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

$crypt = chilkat::CkCrypt2->new();

$password = "correcthorsebatterystaple";

# Derive from the utf-8 byte representation of the password.
$charset = "utf-8";

$hashAlg = "sha256";

$crypt->put_EncodingMode("hex");
$saltHex = $crypt->genRandomBytesENC(16);

$iterationCount = 310000;

# Derive a 256-bit key from the password.
$outputBitLen = 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.)
$enc = "hex";

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

print $hexKey . "\r\n";

# Sample output:
# 597734C894FF89CFD3B93D925462C24E97724BCB118F6FC919007F5ABC27E768