Encrypt a JWE with a Recipient Public Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPublicKey, which sets the public key used to encrypt for a recipient. The example uses RSA-OAEP-256 key management with AES-256-GCM content encryption.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

<?php

$success = 0;

$jwe = new COM("Chilkat.Jwe");

//  Protected header: RSA-OAEP-256 key management with AES-256-GCM content encryption.
$header = new COM("Chilkat.JsonObject");
$header->UpdateString('alg','RSA-OAEP-256');
$header->UpdateString('enc','A256GCM');
$success = $jwe->SetProtectedHeader($header);
if ($success == 0) {
    print $jwe->LastErrorText . "\n";
    exit;
}

//  The file path is relative to the application's current working directory.  An absolute path
//  may also be used.  Supply the path appropriate to your own environment.
//  Load the recipient's public key.
$pubKey = new COM("Chilkat.PublicKey");
$success = $pubKey->LoadFromFile('qa_data/recipient_pubkey.pem');
if ($success == 0) {
    print $pubKey->LastErrorText . "\n";
    exit;
}

//  Set the public key used to encrypt for recipient 0.
$success = $jwe->SetPublicKey(0,$pubKey);
if ($success == 0) {
    print $jwe->LastErrorText . "\n";
    exit;
}

$jweCompact = $jwe->encrypt('This is the secret content.','utf-8');
if ($jwe->LastMethodSuccess == 0) {
    print $jwe->LastErrorText . "\n";
    exit;
}

print $jweCompact . "\n";

?>