Explain how to customize encryption services in laravel

How to customize encryption service in laravel? This article mainly introduces you to the relevant information about customizing encryption services in laravel 5.3. The introduction in the article is very detailed and has certain reference learning value for everyone to learn or use laravel 5.3. Friends who need it can take a look below. I hope to be helpful.

Preface

This article introduces the solution of custom encryption service in laravel 5.3, using laravel's service container to implement custom encryption service Registration (the example is RSA encryption that supports long strings), let’s take a look at the detailed introduction:

Create encryption and decryption service class

File address/app/Service/Common/CryptService.php The code is as follows

The following is an RSA encryption class written by a person to support long strings as an example. If you want to customize encryption, you only need to change it. The code in this file is just fine, other operations are just for dependency injection.

<?php
namespace App\Service\Common;
class CryptService
{
 public $config,$keypath, $prikey_path, $pubkey_path, $prikey, $pubkey , $private_key_size;

 public function select($select = 'rsa_api')
 {
  $config = config('crypt');
  if (array_key_exists($select, $config)) {
   $this->config = $config[$select];
   $this->private_key_size = $this->config['openssl_config']['private_key_bits'];
  } else {
   return false;
  }
  $this->keypath = dirname(dirname(dirname(__DIR__))) . $this->config['path'];
  if(!file_exists($this->keypath)){
   mkdir($this->keypath,"0777",true);
  }
  $this->prikey_path = $this->keypath . $this->config['private_key_file_name'];
  $this->pubkey_path = $this->keypath . $this->config['public_key_file_name'];
  if (file_exists($this->prikey_path))
   $this->prikey = file_get_contents($this->prikey_path);
  if (file_exists($this->pubkey_path))
   $this->pubkey = file_get_contents($this->pubkey_path);
  return $this;
 }

 public function makeKey()
 {
  $res = openssl_pkey_new($this->config['openssl_config']);
  openssl_pkey_export($res, $this->prikey);
  file_put_contents($this->prikey_path, $this->prikey);
  $pubkey = openssl_pkey_get_details($res);
  $this->pubkey = $pubkey['key'];
  file_put_contents($this->pubkey_path, $this->pubkey);
  return $test = ['prikey' => $this->prikey, 'pubkey' => $this->pubkey];
 }

 public function encryptPrivate($data){
  $crypt = $this->encrypt_split($data);
  $crypted = '';
  foreach ($crypt as $k=>$c){
   if($k!=0) $crypted.="@";
   $crypted.=base64_encode($this->doEncryptPrivate($c));
  }
  return $crypted;
 }
 public function encryptPublic($data){
  $crypt = $this->encrypt_split($data);
  $crypted = '';
  foreach ($crypt as $k=>$c){
   if($k!=0) $crypted.="@";
   $crypted.=base64_encode($this->doEncryptPublic($c));
  }
  return $crypted;
 }

 public function decryptPublic($data){
  $decrypt = explode('@',$data);
  $decrypted = "";
  foreach ($decrypt as $k=>$d){
   $decrypted .= $this->doDecryptPublic(base64_decode($d));
  }
  return $decrypted;
 }
 public function decryptPrivate($data){
  $decrypt = explode('@',$data);
  $decrypted = "";
  foreach ($decrypt as $k=>$d){
   $decrypted .= $this->doDecryptPrivate(base64_decode($d));
  }
  return $decrypted;
 }
 private function encrypt_split($data){
  $crypt=[];$index=0;
  for($i=0; $i<strlen($data); $i+=117){
   $src = substr($data, $i, 117);
   $crypt[$index] = $src;
   $index++;
  }
  return $crypt;
 }
 private function doEncryptPrivate($data)
 {
  $rs = '';
  if (@openssl_private_encrypt($data, $rs, $this->prikey) === FALSE) {
   return NULL;
  }
  return $rs;
 }

 private function doDecryptPrivate($data)
 {
  $rs = '';
  if (@openssl_private_decrypt($data, $rs, $this->prikey) === FALSE) {
   return null;
  }
  return $rs;
 }
 private function doEncryptPublic($data){
  $rs = '';
  if (@openssl_public_encrypt($data, $rs, $this->pubkey) === FALSE) {
   return NULL;
  }
  return $rs;
 }
 private function doDecryptPublic($data)
 {
  $rs = '';
  if (@openssl_public_decrypt($data, $rs, $this->pubkey) === FALSE) {
   return null;
  }
  return $rs;
 }
}

Create facade facades

##File address/app/Facades/CryptFacades.php The code is as follows:

<?php
namespace App\Facades;
use \Illuminate\Support\Facades\Facade;

class CryptFacades extends Facade{
 public static function getFacadeAccessor()
 {
  return 'MyCrypt';
 }
}

Registration Service

Create the file /app/Providers/MyCryptServiceProvider.php The code is as follows:

In fact, it can also be By registering in AppServiceProvider, there is no need to create another MyCryptServiceProvider.php file

And there is usually an AppServiceProvider declaration in /config/app.php

<?php
namespace App\Providers;

use App\Service\Common\CryptService;
use Illuminate\Support\ServiceProvider;

class MyCryptServiceProvider extends ServiceProvider
{
 /**
  * Bootstrap the application services.
  *
  * @return void
  */
 public function boot()
 {
  //
 }

 /**
  * Register the application services.
  *
  * @return void
  */
 public function register()
 {
  \App::bind('MyCrypt',CryptService::class);
 }
}

State in the configuration

File address/config/app.php Add

'providers' => [
 \App\Providers\MyCryptServiceProvider::class,
],

'aliases' => [
 'MyCrypt' => \App\Facades\CryptFacades::class,
]

to providershe and aliases to write Custom encryption and decryption service configuration file

/config/crypt.php Because the CryptService I wrote uses a configuration file, I need to add another configuration file. In actual projects, you can set up configuration files and encryption service classes as needed.

<?php
//基于laravel根目录，分隔符最好是用 DIRECTORY_SEPARATOR 常量代替
return [
 'rsa_api' => [
  'path'=>DIRECTORY_SEPARATOR.'storage'.DIRECTORY_SEPARATOR.'rsakey'.DIRECTORY_SEPARATOR,
  'private_key_file_name'=>'private_key.pem',
  'public_key_file_name' =>'public_key.pem',
  'openssl_config'=>[
   "digest_alg" => "sha512",
   "private_key_bits" => 1024,
   "private_key_type" => OPENSSL_KEYTYPE_RSA,
  ]
 ],
 'rsa_data'=>[
  'path'=>DIRECTORY_SEPARATOR.'storage'.DIRECTORY_SEPARATOR.'rsakey'.DIRECTORY_SEPARATOR,
  'private_key_file_name'=>'private.pem',
  'public_key_file_name' =>'public.pem',
  'openssl_config'=>[
   "digest_alg" => "sha512",
   "private_key_bits" => 1024,
   "private_key_type" => OPENSSL_KEYTYPE_RSA,
  ]
 ]
];

Example used in Controller

1. Artisan creates Controller file

php artisan make:controller IndexController

2. Edit IndexController

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use MyCrypt;
class IndexController extends Controller{

 public function test(){
  $crypt = MyCrypt::select('rsa_api');
  $crypt->makeKey();
  $short = "abcd";
  $long = "
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

  $req['short'] = $short;
  $req['short_private_encrypt'] = $crypt->encryptPrivate($short);
  $req['short_public_decrypt'] = $crypt->decryptPublic($req['short_private_encrypt']);

  $req['long'] = $long;
  $req['long_private_encrypt'] = $crypt->encryptPrivate($long);
  $req['long_public_decrypt'] = $crypt->decryptPublic($req['long_private_encrypt']);
  dump($req);
  //dd($req);
 }
}

3. Add routing in /routes/web.php

Route::get('/test', 'IndexController@test');

4. Browse Server access verification results

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Writing APP interface (API) in laravel

Some practical tips to improve the performance of Laravel 5

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