Decrypt a JWE into BinData

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.DecryptBd, which decrypts a recipient of a loaded JWE and writes the plaintext bytes into a BinData.

<?php

include("chilkat.php");

$success = false;

$jwe = new CkJwe();

//  Load the JWE compact serialization to be decrypted.
$jweCompact = 'eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>';
$success = $jwe->LoadJwe($jweCompact);
if ($success == false) {
    print $jwe->lastErrorText() . "\n";
    exit;
}

//  The 256-bit key-wrapping key (base64) for recipient index 0.  In production, obtain the key
//  from a secure source rather than hard-coding it.
$base64Key = 'YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU=';
$success = $jwe->SetWrappingKey(0,$base64Key,'base64');
if ($success == false) {
    print $jwe->lastErrorText() . "\n";
    exit;
}

//  Decrypt recipient index 0, writing the plaintext bytes into a BinData.
$bd = new CkBinData();
$success = $jwe->DecryptBd(0,$bd);
if ($success == false) {
    print $jwe->lastErrorText() . "\n";
    exit;
}

print 'Decrypted ' . $bd->get_NumBytes() . ' bytes.' . "\n";

?>