PHP Classes

File: src/Types/SecretWrap.php

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  Classes of Scott Arciszewski   PASERK PHP   src/Types/SecretWrap.php   Download  
File: src/Types/SecretWrap.php
Role: Class source
Content type: text/plain
Description: Class source
Class: PASERK PHP
Extend PASETO to wrap and serialize keys
Author: By
Last change:
Date: 1 year ago
Size: 2,995 bytes
 

Contents

Class file image Download
<?php
declare(strict_types=1);
namespace
ParagonIE\Paserk\Types;

use
ParagonIE\Paserk\ConstraintTrait;
use
ParagonIE\Paserk\Operations\Wrap\Pie;
use
ParagonIE\Paserk\Operations\Wrap;
use
ParagonIE\Paserk\PaserkException;
use
ParagonIE\Paserk\PaserkTypeInterface;
use
ParagonIE\Paseto\Exception\InvalidVersionException;
use
ParagonIE\Paseto\KeyInterface;
use
ParagonIE\Paseto\Keys\{
   
AsymmetricSecretKey,
   
SymmetricKey
};
use
ParagonIE\Paseto\ProtocolCollection;
use
SodiumException;
use function
array_key_exists;

/**
 * Class SecretWrap
 * @package ParagonIE\Paserk\Types
 */
class SecretWrap implements PaserkTypeInterface
{
    use
ConstraintTrait;

   
/** @var array<string, string> */
   
protected array $localCache = [];

   
/** @var Wrap $wrap */
   
protected Wrap $wrap;

   
/**
     * SecretWrap constructor.
     * @param Wrap $wrap
     */
   
public function __construct(Wrap $wrap)
    {
       
$this->wrap = $wrap;
       
$this->localCache = [];
    }

   
/**
     * Quick and easy constructor-alternative for using the Pie wrapper.
     *
     * @param SymmetricKey $key
     * @return self
     *
     * @throws InvalidVersionException
     */
   
public static function initWithKey(SymmetricKey $key): self
   
{
       
$init = new self(new Wrap(new Pie($key)));
       
$init->setProtocolsAllowed(new ProtocolCollection($key->getProtocol()));
        return
$init;
    }

   
/**
     * @param string $paserk
     * @return KeyInterface
     * @throws PaserkException
     */
   
public function decode(string $paserk): KeyInterface
   
{
       
$unwrapped = $this->wrap->secretUnwrap($paserk);
       
$this->throwIfInvalidProtocol($unwrapped->getProtocol());
       
/// @SPEC DETAIL: Algorithm Lucidity
       
return $unwrapped;
    }

   
/**
     * @param KeyInterface $key
     * @return string
     *
     * @throws PaserkException
     * @throws InvalidVersionException
     */
   
public function encode(KeyInterface $key): string
   
{
        if (!(
$key instanceof AsymmetricSecretKey)) {
            throw new
PaserkException('Only asymmetric secret keys are allowed here');
        }
       
$this->throwIfInvalidProtocol($key->getProtocol());
       
/// @SPEC DETAIL: Algorithm Lucidity
       
$secretId = (new SecretType($this->wrap->getProtocol()))->encode($key);
        if (!
array_key_exists($secretId, $this->localCache)) {
           
$this->localCache[$secretId] = $this->wrap->secretWrap($key);
        }
        return
$this->localCache[$secretId];
    }

   
/**
     * @return string
     */
   
public static function getTypeLabel(): string
   
{
        return
'secret-wrap';
    }

   
/**
     * @param KeyInterface $key
     * @return string
     *
     * @throws InvalidVersionException
     * @throws PaserkException
     * @throws SodiumException
     */
   
public function id(KeyInterface $key): string
   
{
        return
Sid::encode(
           
$key->getProtocol(),
           
$this->encode($key)
        );
    }
}