Perl

Encrypt Content to a JWE

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.Encrypt, which encrypts a string and returns the resulting JWE. The charset argument converts the text to bytes before encryption.

Background. JWE (JSON Web Encryption) protects content with a content-encryption algorithm (the header enc value) while the content-encryption key is managed by the key-management algorithm (the header alg value). This example uses AES key wrapping with a symmetric wrapping key.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

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

# Set the JWE protected header, specifying the key-management algorithm (alg) and the content-
# encryption algorithm (enc).
my $header = Chilkat2::JsonObject->new;
$header->UpdateString('alg', 'A256KW');
$header->UpdateString('enc', 'A256GCM');
my $success = $jwe->SetProtectedHeader($header);
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;
}

# Encrypt the content.  The 2nd argument is the charset used to convert the text to bytes.  The
# returned string is the JWE (compact serialization by default).
my $jweCompact = $jwe->Encrypt('This is the secret content.', 'utf-8');
if (!$jwe->LastMethodSuccess) {
    print $jwe->LastErrorText, "\n";
    exit;
}

print $jweCompact, "\n";