Complete example of php aes encryption algorithm, phpaes Encryption Algorithm

Source: Internet
Author: User
Tags mcrypt

Complete example of php aes encryption algorithm, phpaes Encryption Algorithm

This example describes the AES Encryption Algorithm of PHP. We will share this with you for your reference. The details are as follows:

<?phpclass MCrypt {  private $hex_iv = '00000000000000000000000000000000'; # converted JAVA byte code in to HEX and placed it here  private $key = 'U1MjU1M0FDOUZ.Qz'; #Same as in JAVA  function __construct() {    $this->key = hash('sha256', $this->key, true);    //echo $this->key.'<br/>';  }  function encrypt($str) {    $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');    mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));    $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);    $pad = $block - (strlen($str) % $block);    $str .= str_repeat(chr($pad), $pad);    $encrypted = mcrypt_generic($td, $str);    mcrypt_generic_deinit($td);    mcrypt_module_close($td);    return base64_encode($encrypted);  }  function decrypt($code) {    $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');    mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));    $str = mdecrypt_generic($td, base64_decode($code));    $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);    mcrypt_generic_deinit($td);    mcrypt_module_close($td);    return $this->strippadding($str);  }  /*   For PKCS7 padding   */  private function addpadding($string, $blocksize = 16) {    $len = strlen($string);    $pad = $blocksize - ($len % $blocksize);    $string .= str_repeat(chr($pad), $pad);    return $string;  }  private function strippadding($string) {    $slast = ord(substr($string, -1));    $slastc = chr($slast);    $pcheck = substr($string, -$slast);    if (preg_match("/$slastc{" . $slast . "}/", $string)) {      $string = substr($string, 0, strlen($string) - $slast);      return $string;    } else {      return false;    }  }  function hexToStr($hex)  {    $string='';    for ($i=0; $i < strlen($hex)-1; $i+=2)    {      $string .= chr(hexdec($hex[$i].$hex[$i+1]));    }    return $string;  }}$encryption = new MCrypt();echo $encryption->encrypt('123456') . "<br/>";echo $encryption->decrypt('tpyxISJ83dqEs3uw8bN/+w==');?>

PS: if you are interested in encryption and decryption, refer to the online tools on this site:

Online Password Security Detection:
Http://tools.jb51.net/password/my_password_safe

High-strength Password generator:
Http://tools.jb51.net/password/CreateStrongPassword

MD5 online encryption tool:
Http://tools.jb51.net/password/CreateMD5Password

Thunder, express, and Tornado URL encryption/Decryption tools:
Http://tools.jb51.net/password/urlrethunder

Online hash/hash algorithm encryption tool:
Http://tools.jb51.net/password/hash_encrypt

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