Php and c # consistent DES encryption and decryption algorithm class

: This article mainly introduces the same DES encryption and decryption algorithm class in php and c #. if you are interested in the PHP Tutorial, refer to it. DES encryption and decryption algorithm, common class in C # and PHP.

Note:

1. the key in the class uses the same value as the vector iv.

2. UTF-8 encoding

The specific code is as follows. you can directly copy the code for actual testing.

C # version code:

Using System; using System. data; using System. configuration; using System. web; using System. web. security; using System. web. UI; using System. web. UI. webControls; using System. web. UI. webControls. webParts; using System. web. UI. htmlControls; using System. data. sqlClient; using System. security. cryptography; using System. IO; using System. text; // C # DES encryption and decryption algorithm class public class Des {// encryption and decryption key private static string skey = "12345678 "; # region DESEnCode DES encrypt public static string DESEnCode (string pToEncrypt, string sKey) {pToEncrypt = HttpContext. current. server. urlEncode (pToEncrypt); DESCryptoServiceProvider des = new DESCryptoServiceProvider (); byte [] inputByteArray = Encoding. getEncoding ("UTF-8 "). getBytes (pToEncrypt); des. key = ASCIIEncoding. ASCII. getBytes (sKey); des. IV = ASCIIEncoding. ASCII. getBytes (sKey); MemoryStream MS = new MemoryStream (); CryptoStream cs = new CryptoStream (MS, des. createEncryptor (), CryptoStreamMode. write); cs. write (inputByteArray, 0, inputByteArray. length); cs. flushFinalBlock (); StringBuilder ret = new StringBuilder (); foreach (byte B in ms. toArray () {ret. appendFormat ("{0: X2}", B);} ret. toString (); return ret. toString () ;}# endregion # region DESDeCode DES decrypt public static string DESDeCode (string pToDecrypt, string sKey) {DESCryptoServiceProvider des = new DESCryptoServiceProvider (); byte [] inputByteArray = new byte [pToDecrypt. length/2]; for (int x = 0; x <pToDecrypt. length/2; x ++) {int I = (Convert. toInt32 (pToDecrypt. substring (x * 2, 2), 16); inputByteArray [x] = (byte) I;} des. key = ASCIIEncoding. ASCII. getBytes (sKey); des. IV = ASCIIEncoding. ASCII. getBytes (sKey); MemoryStream MS = new MemoryStream (); CryptoStream cs = new CryptoStream (MS, des. createDecryptor (), CryptoStreamMode. write); cs. write (inputByteArray, 0, inputByteArray. length); cs. flushFinalBlock (); StringBuilder ret = new StringBuilder (); return HttpContext. current. server. urlDecode (System. text. encoding. default. getString (ms. toArray ();} # endregion}

PHP code:

 Key = $ key; $ this-> iv = $ key; // $ key is used as the iv by default} // encryption function encrypt ($ str) {$ size = mcrypt_get_block_size (MCRYPT_DES, MCRYPT_MODE_CBC); $ str = $ this-> pkcs5Pad ($ str, $ size); return strtoupper (bin2hex (mcrypt_cbc (MCRYPT_DES, $ this-> key, $ str, MCRYPT_ENCRYPT, $ this-> iv);} // decryption function decrypt ($ str) {$ strBin = $ this-> hex2bin (strtolower ($ str )); $ str = mcrypt_cbc (MCRYPT_DES, $ this-> key, $ strBin, MCRYPT_DECRYPT, $ this-> iv); $ str = $ this-> pkcs5Unpad ($ str); return $ str;} function hex2bin ($ hexData) {$ binData = ""; for ($ I = 0; $ I <strlen ($ hexData); $ I ++ = 2) {$ binData. = chr (hexdec (substr ($ hexData, $ I, 2);} return $ binData;} function pkcs5Pad ($ text, $ blocksize) {$ pad = $ blocksize-(strlen ($ text) % $ blocksize); return $ text. str_repeat (chr ($ pad), $ pad);} function pkcs5Unpa D ($ text) {$ pad = ord ($ text {strlen ($ text)-1}); if ($ pad> strlen ($ text) return false; if (strspn ($ text, chr ($ pad), strlen ($ text)-$ pad )! = $ Pad) return false; return substr ($ text, 0,-1 * $ pad) ;}} header ("Content-type: text/html; charset = utf-8 "); $ key = '000000'; $ str = 'ABC. 123 '; $ des = new DES ($ key); $ str_en_des = $ des-> encrypt ($ str ); // encrypted string $ str_de_des = $ des-> decrypt ($ str_en_des); // decrypts the string echo 'encrypted string: ', $ str ,'
'; Echo 'encryption key:', $ key ,'

'; Echo 'encrypted string:', $ str_en_des ,'
'; Echo' decrypted string: ', $ str_de_des ,'
';?>

The code has been searched online for sorting, special thanks to blog: http://blog.csdn.net/e421083458/article/details/39373815

The above introduces the same DES encryption and decryption algorithm class in php and c #, including some content, and hope to be helpful to friends who are interested in PHP tutorials.