PHP uses DES for encryption and decryption

There is an extension in php that can support the DES encryption algorithm, it is: extension=php_mcrypt.dll

Turning on this extension in the configuration file cannot be used in the Windows environment

You need to copy libmcrypt.dll in the PHP folder to the system32 directory of the system. You can check mcrypt through phpinfo to indicate that this module can be tried normally.

The following is an example of using DES encryption and decryption in PHP:

//$input - stuff to decrypt
 //$key - the secret key to use

 function do_mencrypt($input, $key)
 {
 $input = str_replace(""n", "", $input);
 $input = str_replace(""t", "", $input);
 $input = str_replace(""r", "", $input);
 $key = substr(md5($key), 0, 24);
 $td = mcrypt_module_open('tripledes', '', 'ecb', '');
 $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size( $td), MCRYPT_RAND);
 mcrypt_generic_init($td, $key, $iv);
 $encrypted_data = mcrypt_generic($td, $input);
 mcrypt_generic_deinit($td);
 mcrypt_module_close($td);
 return trim (chop(base64_encode($encrypted_data)));
 }

 //$input - stuff to decrypt
 //$key - the secret key to use

 function do_mdecrypt($input, $key)
 {
 $input = str_replace(""n", "", $input);
 $input = str_replace(""t", "", $input);
 $input = str_replace(""r", "", $input) ;
 $input = trim(chop(base64_decode($input)));
 $td = mcrypt_module_open('tripledes', '', 'ecb', '');
 $key = substr(md5($key), 0, 24);
 $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
 mcrypt_generic_init($td, $key, $iv);
 $decrypted_data = mdecrypt_generic($td, $input);
 mcrypt_generic_deinit($ td);
 mcrypt_module_close($td);
 return trim(chop($decrypted_data));

 }

PHP, DES