PHP Extension

PBES2 Password-Based Encryption

See more Encryption Examples

Demonstrates PBES2 encryption PHP Extension

<?php

include("chilkat.php");

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

$crypt = new CkCrypt2();

// Set properties for PBES2 encryption:

// When the encryption algorithm is set to "pbes2",
// Chilkat will automatically derive the actual secret key using PBKDF2 and
// the specified paramters: password, salt, iteration count, hash function, and desired key length.

$crypt->put_CryptAlgorithm('pbes2');
$crypt->put_PbesPassword('mySecretPassword');

// Set the underlying PBE algorithm (and key length):
$crypt->put_PbesAlgorithm('aes');
$crypt->put_KeyLength(256);

$crypt->SetEncodedIV('000102030405060708090A0B0C0D0E0F','hex');

// Give it some salt:
$crypt->SetEncodedSalt('0102030405060708','hex');

// A higher iteration count makes the algorithm more
// computationally expensive and therefore exhaustive
// searches (for breaking the encryption) is more difficult:
$crypt->put_IterationCount(1024);

// A hash algorithm needs to be set for PBES2:
$crypt->put_HashAlgorithm('sha256');

// Indicate that the encrypted bytes should be returned
// as a hex string:
$crypt->put_EncodingMode('hex');

$plainText = 'To be encrypted.';

$encryptedText = $crypt->encryptStringENC($plainText);

print $encryptedText . "\n";

// Now decrypt:
$decryptedText = $crypt->decryptStringENC($encryptedText);

print $decryptedText . "\n";

?>