Decrypt a JWE into a StringBuilder

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.DecryptSb, which decrypts a recipient of a loaded JWE and writes the plaintext into a StringBuilder.

use chilkat();

$success = 0;

$jwe = chilkat::CkJwe->new();

#  Load the JWE compact serialization to be decrypted.
$jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>";
$success = $jwe->LoadJwe($jweCompact);
if ($success == 0) {
    print $jwe->lastErrorText() . "\r\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 == 0) {
    print $jwe->lastErrorText() . "\r\n";
    exit;
}

#  Decrypt recipient index 0, writing the plaintext into a StringBuilder.
$sbContent = chilkat::CkStringBuilder->new();
$success = $jwe->DecryptSb(0,"utf-8",$sbContent);
if ($success == 0) {
    print $jwe->lastErrorText() . "\r\n";
    exit;
}

print $sbContent->getAsString() . "\r\n";