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 strict;
use warnings;
use Chilkat2;

my $jwe = Chilkat2::Jwe->new;

# Load the JWE compact serialization to be decrypted.
my $jweCompact = 'eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>';
my $success = $jwe->LoadJwe($jweCompact);
if (!$success) {
    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.
my $base64Key = 'YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU=';
$success = $jwe->SetWrappingKey(0, $base64Key, 'base64');
if (!$success) {
    print $jwe->LastErrorText, "\n";
    exit;
}

# Decrypt recipient index 0, writing the plaintext into a StringBuilder.
my $sbContent = Chilkat2::StringBuilder->new;
$success = $jwe->DecryptSb(0, 'utf-8', $sbContent);
if (!$success) {
    print $jwe->LastErrorText, "\n";
    exit;
}

print $sbContent->GetAsString(), "\n";