Changed version phpseclib 3

[darkdim]

Error: Class 'phpseclib\Crypt\RSA' not found in JOSE_JWK->toKey() (line 23 of \vendor\gree\jose\src\JOSE\JWK.php).

[darkdim]

"require": { "php": ">=5.6", "phpseclib/phpseclib": ">=2.0.0" }, in new ver phpseclib used NS as phpseclib3 need to limit ver phpseclib

[benjy]

As a temporary workaround you can do that in your own project with

composer require phpseclib/phpseclib:^2.0

[terrafrost]

composer require phpseclib/phpseclib2_compat:~1.0 should also work. That'd let you use the phpseclib v2 API with phpseclib v3

[nextofblake]

Limiting the version to v2

composer require phpseclib/phpseclib:~2.0

Also phpseclib2_compat did not work for me

$rsa = new RSA();
$rsa->_convertPublicKey($n, $e) // method not found

[terrafrost]

@NextOfBlake - the presence of the underscore means that that method is not an officially supported method. This can be traced back to the old PEAR coding standards. Quoting them, "Private class members are preceded by a single underscore".

phpseclib 3 doesn't follow this convention but phpseclib 1/2 did.

Anyway, I'd rewrite your code thusly:

$rsa = new RSA;
$rsa->load([
    'e' => new BigInteger('...'),
    'n' => new BigInteger('...')
]);

phpseclib 2 has supported this since the initial release of 2.0 (2.0.0).

[nextofblake]

@terrafrost thanks for the tip however the issue is specific to this package. inspect jose-php/src/JOSE/JWK.php

function toKey() {
... stuff
$pem_string = $rsa->_convertPublicKey($n, $e);
}

[kmuenkel]

I wrote an override class that addresses most of not all the compatibility issues. Note that it depends on Firebase\JWT to facilitate what RSA::_convertPublicKey() previously offered. And that some Reflection hackery was needed to regain access to now-protected properties.

<?php

namespace App\Overrides\JOSE;

use Error;
use JOSE_JWK;
use ReflectionClass;
use JOSE_URLSafeBase64;
use ReflectionException;
use phpseclib3\Crypt\RSA;
use UnexpectedValueException;
use phpseclib3\Crypt\RSA\PublicKey;
use Firebase\JWT\JWK as FirebaseJWK;
use phpseclib3\Crypt\PublicKeyLoader;
use JOSE_Exception_UnexpectedAlgorithm;

/**
 * Override to cope with changes from phpseclib/phpseclib v2 to 3
 */
class JWK extends JOSE_JWK
{
    /**
     * @inheritDoc
     * @throws ReflectionException
     */
    public static function encode($key, $extra_components = [])
    {
        try {
            return parent::encode($key, $extra_components);
        } catch (JOSE_Exception_UnexpectedAlgorithm $error) {
            //
        }

        if ($key instanceof RSA\PublicKey) {
            $modulus = static::getProtectedProperty($key, 'modulus');
            $exponent = static::getProtectedProperty($key, 'exponent');

            $components = [
                'kty' => 'RSA',
                'e' => JOSE_URLSafeBase64::encode($key->publicExponent->toBytes()),
                'n' => JOSE_URLSafeBase64::encode($modulus->toBytes())
            ];

            if ($exponent != $key->publicExponent) {
                $components = array_merge($components, ['d' => JOSE_URLSafeBase64::encode($exponent->toBytes())]);
            }

            return new static(array_merge($components, $extra_components));
        }

        throw new JOSE_Exception_UnexpectedAlgorithm('Unknown key type: '.get_class($key));
    }

    /**
     * @param object $object
     * @param string $propertyName
     * @return mixed
     * @throws ReflectionException
     */
    protected static function getProtectedProperty(object $object, string $propertyName)
    {
        $reflectionClass = app(ReflectionClass::class, ['argument' => $object]);
        $reflectionProperty = $reflectionClass->getProperty($propertyName);

        if ($reflectionProperty->isPublic()) {
            throw new UnexpectedValueException($reflectionClass->name."::$propertyName is public");
        }

        $reflectionProperty->setAccessible(true);

        return $reflectionProperty->getValue($object);
    }

    /**
     * @inheritDoc
     */
    public static function decode($components)
    {
        $jwk = new static($components);

        return $jwk->toKey();
    }

    /**
     * @inheritDoc
     */
    public function toKey()
    {
        try {
            return parent::toKey();
        } catch (Error $e) {
            //
        }

        switch ($this->components['kty']) {
            case 'RSA':
                $pemResource = FirebaseJWK::parseKey($this->components);
                $keyData = openssl_pkey_get_details($pemResource);
                $keyString = $keyData['key'];

                /** @var PublicKey $rsa */
                $rsa = PublicKeyLoader::loadPublicKey($keyString);

                return $rsa;
            default:
                throw new JOSE_Exception_UnexpectedAlgorithm('Unknown key type');
        }
    }
}

[Hailong]

Here is my PR to change to phpseclib 3, https://github.com/nov/jose-php/pull/45

[ilazaridis]

@nov any chance to merge the PR above and release a new version ?