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File: src/KeyProvider/RandomProvider.php

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  Classes of Scott Arciszewski  >  Cipher Sweet  >  src/KeyProvider/RandomProvider.php  >  Download  
File: src/KeyProvider/RandomProvider.php
Role: Class source
Content type: text/plain
Description: Class source
Class: Cipher Sweet
Encrypt data in away that can be searched
Author: By
Last change:
Date: 6 months ago
Size: 1,467 bytes
 

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<?php
namespace ParagonIE\CipherSweet\KeyProvider;

use
ParagonIE\CipherSweet\Backend\FIPSCrypto;
use
ParagonIE\CipherSweet\Backend\Key\SymmetricKey;
use
ParagonIE\CipherSweet\Backend\ModernCrypto;
use
ParagonIE\CipherSweet\Contract\BackendInterface;
use
ParagonIE\CipherSweet\Contract\KeyProviderInterface;

/**
 * Class RandomProvider
 *
 * This is mostly useful for initially key generation and/or unit testing.
 *
 * @package ParagonIE\CipherSweet\KeyProvider
 */
class RandomProvider implements KeyProviderInterface
{
   
/**
     * @var BackendInterface
     */
   
private $backend;

   
/**
     * RandomProvider constructor.
     *
     * @param BackendInterface $backend
     */
   
public function __construct(BackendInterface $backend)
    {
       
$this->backend = $backend;
    }

   
/**
     * @return BackendInterface
     */
   
public function getBackend()
    {
        return
$this->backend;
    }

   
/**
     * @return SymmetricKey
     */
   
public function getSymmetricKey()
    {
        if (
$this->backend instanceof FIPSCrypto) {
            return new
SymmetricKey(
               
$this->backend,
                \
random_bytes(32)
            );
        } elseif (
$this->backend instanceof ModernCrypto) {
            return new
SymmetricKey(
               
$this->backend,
                \
ParagonIE_Sodium_Compat::crypto_secretbox_keygen()
            );
        }
        throw new \
TypeError('Invalid Backend provided');
    }
}