PHP and C # Reversible cryptographic algorithms that can be shared, _php tutorial

A reversible cryptographic algorithm that can be shared between PHP and C #,

In some projects require the generation of encryption in PHP, and then in ASP. NET to accept the password to decrypt, below and you share a PHP and ASP. C # can be shared reversible encryption algorithm, interested can refer to the reference.

PHP Encryption algorithm:

<?phpclass des{var $key; var $iv;    Offset function DES ($key = ' 11001100 ', $iv =0) {//key length 8 for example: 1234ABCD $this->key = $key; if ($iv = = 0) {$this->iv = $key;//default to $key as IV} else {$this->iv = $iv;//mcrypt_create_iv (Mcryp    T_get_block_size (Mcrypt_des, MCRYPT_MODE_CBC), mcrypt_dev_random);    }} function Encrypt ($STR) {//encryption, return 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:

Using system;using system.collections.generic;using system.io;using system.linq;using System.Security.Cryptography; Using System.text;namespace windowsformsapplication1{//// des Cryptographic decryption string //public class Desencryption {///// des encrypted string /////String to encrypt///Encryption key, required for 8-bit///
 
  
   encryption succeeded in returning the encrypted string, and failed to return null
  
 public static string Encryptdes (String encryptstring, String encryptkey = "11001100") {try {byte[] R        Gbkey = 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 Decrypt///Decryption key, required to be 8-bit, same as encryption key///
 
  
   decryption succeeded in returning the decrypted string, and failed to return null
  
 public static string Decryptdes (String decryptstring, String decryptkey = "11001100") {try {byte[] R        Gbkey = ASCIIEncoding.ASCII.GetBytes (Decryptkey);        byte[] Rgbiv = RgbKey;        byte[] Inputbytearray = new BYTE[DECRYPTSTRING.LENGTH/2];  for (int x = 0; x < DECRYPTSTRING.LENGTH/2; + +) {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; }    }  }}

The above is the PHP and C # can be common reversible encryption algorithm, I hope that everyone's learning is helpful.

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