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erreur php: la bibliothèque Encrypt nécessite l'extension Mcrypt dans codeigniter

J'ai un formulaire de connexion et d'inscription et j'utilise la bibliothèque de chiffrement pour chiffrer le mot de passe .. J'utilise Xampp pour mon serveur et mon système fonctionne correctement ..

code pour crypter le mot de passe:

$this->encrypt->encode('my password'); 

ajouter une bibliothèque de chiffrement

 $autoload['libraries'] = array('encrypt');

et définir la clé secrète dans la configuration:

$config['encryption_key'] = 'nmsc encrypt secret key';

Mon code fonctionne bien en utilisant le serveur xampp dans Windows, mais lorsque j'essaie de télécharger mon site Web sur le serveur Ubuntu, j'ai une erreur:

La bibliothèque Encrypt nécessite l'extension Mcrypt

comment résoudre ce problème? se référant à ce guide https://www.codeigniter.com/user_guide/libraries/encryption.html mais je ne sais pas comment installer ce mcrypt. mon site Web doit fonctionner à partir du serveur ubuntu. comment installer ou résoudre ce problème?

5
MGB C

Vous devez installer le module PHP mcrypt;

Sudo apt-get install php5-mcrypt
Sudo php5enmod mcrypt

Et normalement vous serez bon;)

13
Wajih OUERIEMI

La meilleure solution est (uniquement disponible pour CI 3 et supérieur):

changement

 $this->load->library('encrypt');

à

 $this->load->library('encryption');
4
Aditya Tomar

J'obtenais cette erreur parce que j'étais passé de XAMPP (php5) à XAMPP (php7), pour cela j'ai remplacé mon ancien CI-> système-> bibliothèques-> encrypt.php par un nouveau fichier ici: encrypt.php , et cela a fonctionné.

Dans ce nouveau fichier, nous vérifions si mcrypt_encrypt est pris en charge ou non dans la fonction __construct avec le code ci-dessous

   $this->_mcrypt_exists = ( ! function_exists('mcrypt_encrypt')) ? FALSE : TRUE;

et sur cette base, nous utilisons une fonction différente entre mcrypt_encode et _xor_encode comme ça.

Juste pour savoir, si vous voyez cet ancien fichier dans la fonction __construct, vous verrez une vérification d'erreur réelle

    if (($this->_mcrypt_exists = function_exists('mcrypt_encrypt')) === FALSE)
    {
        show_error('The Encrypt library requires the Mcrypt extension.');
    }

Ça a marché pour moi.

4
mohitesachin217

Enregistrez ce code dans bibliothèques/Encrypt.php

Ça doit être du travail!

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package     CodeIgniter
 * @author      ExpressionEngine Dev Team
 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license     http://codeigniter.com/user_guide/license.html
 * @link        http://codeigniter.com
 * @since       Version 1.0
 * @filesource
 */
// ------------------------------------------------------------------------
/**
 * CodeIgniter Encryption Class
 *
 * Provides two-way keyed encoding using XOR Hashing and Mcrypt
 *
 * @package     CodeIgniter
 * @subpackage  Libraries
 * @category    Libraries
 * @author      ExpressionEngine Dev Team
 * @link        http://codeigniter.com/user_guide/libraries/encryption.html
 */
class CI_Encrypt {
    var $CI;
    var $encryption_key = '';
    var $_hash_type = 'sha1';
    var $_mcrypt_exists = FALSE;
    var $_mcrypt_cipher;
    var $_mcrypt_mode;
    /**
     * Constructor
     *
     * Simply determines whether the mcrypt library exists.
     *
     */
    public function __construct()
    {
        $this->CI =& get_instance();
        $this->_mcrypt_exists = ( ! function_exists('mcrypt_encrypt')) ? FALSE : TRUE;
        log_message('debug', "Encrypt Class Initialized");
    }
    // --------------------------------------------------------------------
    /**
     * Fetch the encryption key
     *
     * Returns it as MD5 in order to have an exact-length 128 bit key.
     * Mcrypt is sensitive to keys that are not the correct length
     *
     * @access  public
     * @param   string
     * @return  string
     */
    function get_key($key = '')
    {
        if ($key == '')
        {
            if ($this->encryption_key != '')
            {
                return $this->encryption_key;
            }
            $CI =& get_instance();
            $key = $CI->config->item('encryption_key');
            if ($key == FALSE)
            {
                show_error('In order to use the encryption class requires that you set an encryption key in your config file.');
            }
        }
        return md5($key);
    }
    // --------------------------------------------------------------------
    /**
     * Set the encryption key
     *
     * @access  public
     * @param   string
     * @return  void
     */
    function set_key($key = '')
    {
        $this->encryption_key = $key;
    }
    // --------------------------------------------------------------------
    /**
     * Encode
     *
     * Encodes the message string using bitwise XOR encoding.
     * The key is combined with a random hash, and then it
     * too gets converted using XOR. The whole thing is then run
     * through mcrypt (if supported) using the randomized key.
     * The end result is a double-encrypted message string
     * that is randomized with each call to this function,
     * even if the supplied message and key are the same.
     *
     * @access  public
     * @param   string  the string to encode
     * @param   string  the key
     * @return  string
     */
    function encode($string, $key = '')
    {
        $key = $this->get_key($key);
        if ($this->_mcrypt_exists === TRUE)
        {
            $enc = $this->mcrypt_encode($string, $key);
        }
        else
        {
            $enc = $this->_xor_encode($string, $key);
        }
        return base64_encode($enc);
    }
    // --------------------------------------------------------------------
    /**
     * Decode
     *
     * Reverses the above process
     *
     * @access  public
     * @param   string
     * @param   string
     * @return  string
     */
    function decode($string, $key = '')
    {
        $key = $this->get_key($key);
        if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string))
        {
            return FALSE;
        }
        $dec = base64_decode($string);
        if ($this->_mcrypt_exists === TRUE)
        {
            if (($dec = $this->mcrypt_decode($dec, $key)) === FALSE)
            {
                return FALSE;
            }
        }
        else
        {
            $dec = $this->_xor_decode($dec, $key);
        }
        return $dec;
    }
    // --------------------------------------------------------------------
    /**
     * Encode from Legacy
     *
     * Takes an encoded string from the original Encryption class algorithms and
     * returns a newly encoded string using the improved method added in 2.0.0
     * This allows for backwards compatibility and a method to transition to the
     * new encryption algorithms.
     *
     * For more details, see http://codeigniter.com/user_guide/installation/upgrade_200.html#encryption
     *
     * @access  public
     * @param   string
     * @param   int     (mcrypt mode constant)
     * @param   string
     * @return  string
     */
    function encode_from_legacy($string, $legacy_mode = MCRYPT_MODE_ECB, $key = '')
    {
        if ($this->_mcrypt_exists === FALSE)
        {
            log_message('error', 'Encoding from legacy is available only when Mcrypt is in use.');
            return FALSE;
        }
        // decode it first
        // set mode temporarily to what it was when string was encoded with the legacy
        // algorithm - typically MCRYPT_MODE_ECB
        $current_mode = $this->_get_mode();
        $this->set_mode($legacy_mode);
        $key = $this->get_key($key);
        if (preg_match('/[^a-zA-Z0-9\/\+=]/', $string))
        {
            return FALSE;
        }
        $dec = base64_decode($string);
        if (($dec = $this->mcrypt_decode($dec, $key)) === FALSE)
        {
            return FALSE;
        }
        $dec = $this->_xor_decode($dec, $key);
        // set the mcrypt mode back to what it should be, typically MCRYPT_MODE_CBC
        $this->set_mode($current_mode);
        // and re-encode
        return base64_encode($this->mcrypt_encode($dec, $key));
    }
    // --------------------------------------------------------------------
    /**
     * XOR Encode
     *
     * Takes a plain-text string and key as input and generates an
     * encoded bit-string using XOR
     *
     * @access  private
     * @param   string
     * @param   string
     * @return  string
     */
    function _xor_encode($string, $key)
    {
        $Rand = '';
        while (strlen($Rand) < 32)
        {
            $Rand .= mt_Rand(0, mt_getrandmax());
        }
        $Rand = $this->hash($Rand);
        $enc = '';
        for ($i = 0; $i < strlen($string); $i++)
        {
            $enc .= substr($Rand, ($i % strlen($Rand)), 1).(substr($Rand, ($i % strlen($Rand)), 1) ^ substr($string, $i, 1));
        }
        return $this->_xor_merge($enc, $key);
    }
    // --------------------------------------------------------------------
    /**
     * XOR Decode
     *
     * Takes an encoded string and key as input and generates the
     * plain-text original message
     *
     * @access  private
     * @param   string
     * @param   string
     * @return  string
     */
    function _xor_decode($string, $key)
    {
        $string = $this->_xor_merge($string, $key);
        $dec = '';
        for ($i = 0; $i < strlen($string); $i++)
        {
            $dec .= (substr($string, $i++, 1) ^ substr($string, $i, 1));
        }
        return $dec;
    }
    // --------------------------------------------------------------------
    /**
     * XOR key + string Combiner
     *
     * Takes a string and key as input and computes the difference using XOR
     *
     * @access  private
     * @param   string
     * @param   string
     * @return  string
     */
    function _xor_merge($string, $key)
    {
        $hash = $this->hash($key);
        $str = '';
        for ($i = 0; $i < strlen($string); $i++)
        {
            $str .= substr($string, $i, 1) ^ substr($hash, ($i % strlen($hash)), 1);
        }
        return $str;
    }
    // --------------------------------------------------------------------
    /**
     * Encrypt using Mcrypt
     *
     * @access  public
     * @param   string
     * @param   string
     * @return  string
     */
    function mcrypt_encode($data, $key)
    {
        $init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
        $init_vect = mcrypt_create_iv($init_size, MCRYPT_Rand);
        return $this->_add_cipher_noise($init_vect.mcrypt_encrypt($this->_get_cipher(), $key, $data, $this->_get_mode(), $init_vect), $key);
    }
    // --------------------------------------------------------------------
    /**
     * Decrypt using Mcrypt
     *
     * @access  public
     * @param   string
     * @param   string
     * @return  string
     */
    function mcrypt_decode($data, $key)
    {
        $data = $this->_remove_cipher_noise($data, $key);
        $init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
        if ($init_size > strlen($data))
        {
            return FALSE;
        }
        $init_vect = substr($data, 0, $init_size);
        $data = substr($data, $init_size);
        return rtrim(mcrypt_decrypt($this->_get_cipher(), $key, $data, $this->_get_mode(), $init_vect), "\0");
    }
    // --------------------------------------------------------------------
    /**
     * Adds permuted noise to the IV + encrypted data to protect
     * against Man-in-the-middle attacks on CBC mode ciphers
     * http://www.ciphersbyritter.com/GLOSSARY.HTM#IV
     *
     * Function description
     *
     * @access  private
     * @param   string
     * @param   string
     * @return  string
     */
    function _add_cipher_noise($data, $key)
    {
        $keyhash = $this->hash($key);
        $keylen = strlen($keyhash);
        $str = '';
        for ($i = 0, $j = 0, $len = strlen($data); $i < $len; ++$i, ++$j)
        {
            if ($j >= $keylen)
            {
                $j = 0;
            }
            $str .= chr((ord($data[$i]) + ord($keyhash[$j])) % 256);
        }
        return $str;
    }
    // --------------------------------------------------------------------
    /**
     * Removes permuted noise from the IV + encrypted data, reversing
     * _add_cipher_noise()
     *
     * Function description
     *
     * @access  public
     * @param   type
     * @return  type
     */
    function _remove_cipher_noise($data, $key)
    {
        $keyhash = $this->hash($key);
        $keylen = strlen($keyhash);
        $str = '';
        for ($i = 0, $j = 0, $len = strlen($data); $i < $len; ++$i, ++$j)
        {
            if ($j >= $keylen)
            {
                $j = 0;
            }
            $temp = ord($data[$i]) - ord($keyhash[$j]);
            if ($temp < 0)
            {
                $temp = $temp + 256;
            }
            $str .= chr($temp);
        }
        return $str;
    }
    // --------------------------------------------------------------------
    /**
     * Set the Mcrypt Cipher
     *
     * @access  public
     * @param   constant
     * @return  string
     */
    function set_cipher($cipher)
    {
        $this->_mcrypt_cipher = $cipher;
    }
    // --------------------------------------------------------------------
    /**
     * Set the Mcrypt Mode
     *
     * @access  public
     * @param   constant
     * @return  string
     */
    function set_mode($mode)
    {
        $this->_mcrypt_mode = $mode;
    }
    // --------------------------------------------------------------------
    /**
     * Get Mcrypt cipher Value
     *
     * @access  private
     * @return  string
     */
    function _get_cipher()
    {
        if ($this->_mcrypt_cipher == '')
        {
            $this->_mcrypt_cipher = MCRYPT_RIJNDAEL_256;
        }
        return $this->_mcrypt_cipher;
    }
    // --------------------------------------------------------------------
    /**
     * Get Mcrypt Mode Value
     *
     * @access  private
     * @return  string
     */
    function _get_mode()
    {
        if ($this->_mcrypt_mode == '')
        {
            $this->_mcrypt_mode = MCRYPT_MODE_CBC;
        }
        return $this->_mcrypt_mode;
    }
    // --------------------------------------------------------------------
    /**
     * Set the Hash type
     *
     * @access  public
     * @param   string
     * @return  string
     */
    function set_hash($type = 'sha1')
    {
        $this->_hash_type = ($type != 'sha1' AND $type != 'md5') ? 'sha1' : $type;
    }
    // --------------------------------------------------------------------
    /**
     * Hash encode a string
     *
     * @access  public
     * @param   string
     * @return  string
     */
    function hash($str)
    {
        return ($this->_hash_type == 'sha1') ? $this->sha1($str) : md5($str);
    }
    // --------------------------------------------------------------------
    /**
     * Generate an SHA1 Hash
     *
     * @access  public
     * @param   string
     * @return  string
     */
    function sha1($str)
    {
        if ( ! function_exists('sha1'))
        {
            if ( ! function_exists('mhash'))
            {
                require_once(BASEPATH.'libraries/Sha1.php');
                $SH = new CI_SHA;
                return $SH->generate($str);
            }
            else
            {
                return bin2hex(mhash(MHASH_SHA1, $str));
            }
        }
        else
        {
            return sha1($str);
        }
    }
}
// END CI_Encrypt class
/* End of file Encrypt.php */
2
alejus

La solution qui fonctionne pour moi est

Avant:

$autoload['libraries'] = array('database','session','upload','form_validation','encrypt','pagination');

Après:

$autoload['libraries'] = array('database','session','upload','form_validation','pagination');

je viens de supprimer la bibliothèque de chiffrement des bibliothèques de chargement automatique.

1
AKASH VERMA

Ouvrez votre: /etc/php5/Apache2/php.ini
Exemple: Sudo gedit /etc/php5/Apache2/php.ini
À la ligne 1728, mettez ce code:

extension=mcrypt.so

Redémarrez ensuite votre Apache.

0
Márcio Brasil

On dirait que vous devez mettre à jour votre version php.

http://php.net/manual/en/mcrypt.requirements.php
0
Hazonko