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PHP

Encrypt a JWE with a Password (PBES2)

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPassword, which sets the PBES2 password for a recipient. The example uses PBES2-HS256+A128KW key management with AES-128-GCM content encryption.

Background. PBES2 derives a key-wrapping key from a password using a salt and iteration count, allowing password-based JWE encryption. The password should come from a secure source.

Chilkat PHP Downloads

Chilkat2 PHP
<?php

use Chilkat2\JsonObject;
use Chilkat2\Jwe;

$jwe = new Jwe();

// Protected header: PBES2 password-based key management with AES-128-GCM content encryption.
$header = new JsonObject();
$header->UpdateString('alg', 'PBES2-HS256+A128KW');
$header->UpdateString('enc', 'A128GCM');
try {
    $jwe->SetProtectedHeader($header);

    // Set the PBES2 password for recipient 0.  The password should come from a secure source rather than
    // being hard-coded.
    $password = 'myPassword';
    $jwe->SetPassword(0, $password);

    $jweCompact = $jwe->Encrypt('This is the secret content.', 'utf-8');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo $jweCompact, "\n";