Get the JWE Protected Header

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.GetProtectedHeader, which copies the decoded shared JWE protected header into a JsonObject.

<?php

$success = 0;

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

//  Load the JWE.
$jweCompact = 'eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>';
$success = $jwe->LoadJwe($jweCompact);
if ($success == 0) {
    print $jwe->LastErrorText . "\n";
    exit;
}

//  Copy the decoded shared JWE protected header into a JsonObject.  Only the protected header is
//  returned; it is not merged with the unprotected or per-recipient headers.
$json = new COM("Chilkat.JsonObject");
$success = $jwe->GetProtectedHeader($json);
if ($success == 0) {
    print $jwe->LastErrorText . "\n";
    exit;
}

$json->EmitCompact = 0;
print $json->emit() . "\n";

?>