Mcrypt reversible encryption algorithm in PHP_PHP tutorial

Mcrypt reversible encryption algorithm in PHP

$td = mcrypt_module_open(MCRYPT_DES,'','ecb',''); //Use MCRYPT_DES algorithm, ecb mode

$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
$ks = mcrypt_enc_get_key_size($td);

$key = "ery secret key";//Key
$key = substr(md5($key), 0, $ks);

mcrypt_generic_init($td, $key, $iv); //Initial processing

//Encryption
$encrypted = mcrypt_generic($td, 'This is very important data');

//End processing
mcrypt_generic_deinit($td);

//Initial decryption processing
mcrypt_generic_init($td, $key, $iv);

//Decryption
$decrypted = mdecrypt_generic($td, $encrypted);

//End
mcrypt_generic_deinit($td);

mcrypt_module_close($td);

//After decryption, there may be subsequent ones that need to be removed
echo trim($decrypted) . "n";

http://www.bkjia.com/PHPjc/629707.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629707.htmlTechArticleMcrypt reversible encryption algorithm in PHP?php tutorial$td = mcrypt_module_open(MCRYPT_DES,'','ecb', ''); //Use MCRYPT_DES algorithm, ecb mode $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($t...