PHP-implemented DES encryption and decryption instance code, phpdes encryption and decryption instance _ PHP Tutorial

PHP implements DES encryption and decryption instance code, and phpdes encrypts and decrypts instances. PHP-implemented DES encryption and decryption instance code. phpdes encryption and decryption instance this article describes the PHP-implemented DES encryption and decryption instance. For your reference, the code of the DES encryption and decryption instance implemented by php $ key PHP and the phpdes encryption and decryption instance are as follows:

This example describes the DES encryption and decryption instance implemented by PHP. We will share this with you for your reference. The details are as follows:

<? Php $ key = 'very impant Ant data'; function jiami ($ key, $ str) {/* Open module, and create IV */$ td = mcrypt_module_open ('Des ', '', 'ECB ',''); // $ td = mcrypt_module_open (MCRYPT_DES, '', MCRYPT_MODE_CBC,''); // $ td = mcrypt_module_open ('Des ', '', 'cbc',''); $ key = substr ($ key, 0, mcrypt_enc_get_key_size ($ td); $ iv_size = mcrypt_enc_get_iv_size ($ td ); $ iv = mcrypt_create_iv ($ iv_size, MCRYPT_RAND);/* I Nitialize encryption handle */if (mcrypt_generic_init ($ td, $ key, $ iv) ===- 1) {return FALSE ;} /* Encrypt data */$ c_t = mcrypt_generic ($ td, $ str);/* Clean up */mcrypt_generic_deinit ($ td); mcrypt_module_close ($ td ); return $ c_t;} function jiemi ($ key, $ str) {/* Open module, and create IV */$ td = mcrypt_module_open ('Des ','', 'ECB ', ''); // $ td = mcrypt_module_open (MCRYPT_DES,'', MCRYPT_MODE_CBC, ''); // $ Td = mcrypt_module_open ('Des ','', 'cbc', ''); $ key = substr ($ key, 0, mcrypt_enc_get_key_size ($ td); $ iv_size = mcrypt_enc_get_iv_size ($ td); $ iv = mcrypt_create_iv ($ iv_size, MCRYPT_RAND ); /* Initialize encryption handle */if (mcrypt_generic_init ($ td, $ key, $ iv) ===- 1) {return FALSE ;} /* Reinitialize buffers for decryption */$ p_t = mdecrypt_generic ($ td, $ str);/* Clean up */mcrypt_ge Neric_deinit ($ td); mcrypt_module_close ($ td); return trim ($ p_t);} $ str = 'Hello world! '; Echo 'key:'. $ key .'
'; Echo 'Str:'. $ str .'
'; $ Jiami = jiami ($ key, $ str); echo 'encryption:'. $ jiami .'
'{File_put_contents('jiamiqian.txt ', {str}{file_put_contents('jiamihou.txt', $ jiami); $ jiemi = jiemi ($ key, $ jiami); echo 'decryption: '. $ jiemi .'
';