PHP and asp. netC # reversible encryption algorithms that can be shared _ PHP Tutorial

PHP and asp. netC # reversible encryption algorithms that can be shared. Because of work requirements, we need to generate encryption in php and then decrypt the password accepted in asp.net. below I find a PHP and asp. netC # A common reversible encryption algorithm. you need to know that because of work requirements, we need to generate an encryption algorithm in php and then decrypt the password accepted in asp.net, next I will find a reversible encryption algorithm that can be shared by PHP and asp.net C #. For more information, see.

Php encryption algorithm

The code is as follows:

Class DES { Var $ key; Var $ iv; // Offset Function DES ($ key = '000000', $ iv = 0 ){ // The key length is 8, for example, 1234 abcd. $ This-> key = $ key; If ($ iv = 0 ){ $ This-> iv = $ key; // $ key is used as the iv by default. } Else { $ This-> iv = $ iv; // mcrypt_create_iv (mcrypt_get_block_size (MCRYPT_DES, MCRYPT_MODE_CBC), MCRYPT_DEV_RANDOM ); } } Function encrypt ($ str ){ // Encrypted, returns an uppercase hexadecimal string $ 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 ))); } Function decrypt ($ str ){ // Decrypt $ 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 pkcs5Unpad ($ 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 ); } } ?>

Asp.net program code

The code is as follows:

Using System; Using System. Collections. Generic; Using System. IO; Using System. Linq; Using System. Security. Cryptography; Using System. Text; Namespace WindowsFormsApplication1 { /// /// DES encryption and decryption string /// Public class DesEncryption { /// /// DES encrypted string /// ///String to be encrypted ///Encryption key, which must be 8 bits /// The encrypted string is returned successfully. if the encrypted string fails, null is returned. Public static string EncryptDES (string encryptString, string encryptKey = "11001100 ") { Try { Byte [] rgbKey = ASCIIEncoding. ASCII. GetBytes (encryptKey. Substring (0, 8 )); Byte [] rgbIV = rgbKey; Byte [] inputByteArray = Encoding. UTF8.GetBytes (encryptString ); DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider (); MemoryStream mStream = new MemoryStream (); CryptoStream cStream = new CryptoStream (mStream, dCSP. CreateEncryptor (rgbKey, rgbIV), CryptoStreamMode. Write ); CStream. Write (inputByteArray, 0, inputByteArray. Length ); CStream. FlushFinalBlock (); StringBuilder ret = new StringBuilder (); Foreach (byte B in mStream. ToArray ()) { Ret. AppendFormat ("{0: X2}", B ); } Ret. ToString (); Return ret. ToString (); } Catch { Return null; } } /// /// DES decryption string /// ///String to be decrypted ///Decryption key, which must be 8 bits, the same as the encryption key /// Returns the decrypted string. if the decryption fails, the return value is null. Public static string DecryptDES (string decryptString, string decryptKey = "11001100 ") { Try { Byte [] rgbKey = ASCIIEncoding. ASCII. GetBytes (decryptKey ); Byte [] rgbIV = rgbKey; Byte [] inputByteArray = new byte [decryptString. Length/2]; For (int x = 0; x <decryptString. Length/2; x ++) { Int I = (Convert. ToInt32 (decryptString. Substring (x * 2, 2), 16 )); InputByteArray [x] = (byte) I; } DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider (); MemoryStream mStream = new MemoryStream (); CryptoStream cStream = new CryptoStream (mStream, DCSP. CreateDecryptor (rgbKey, rgbIV), CryptoStreamMode. Write ); CStream. Write (inputByteArray, 0, inputByteArray. Length ); CStream. FlushFinalBlock (); Return Encoding. UTF8.GetString (mStream. ToArray ()); } Catch { Return null; } } } }

Objective C # Shared reversible encryption algorithms. learn more...