PHP phpseclib\Crypt TripleDES::decrypt Examples

decrypt() public method

Decrypts a message.

See also: phpseclib\Crypt\Common\SymmetricKey::decrypt()

public decrypt ( string $ciphertext ) : string
$ciphertext	string
return	string	$plaintext

Example #1

File: Utility.php Project: camcima/dukpt-php

 /**
  * 3-DES Decrypt in EDE-CBC3 Mode
  * 
  * @param string $hexEncryptedData
  *      Encrypted Data in hexadecimal representation
  * @param string $hexKey
  *      Key in hexadecimal representation
  * @param bool   $useDesModeCBC3
  *      Use DES CBC3 Mode
  * 
  * @return string
  *      Decrypted data in hexadecimal representation
  */
 public static function tripleDesDecrypt($hexEncryptedData, $hexKey, $useDesModeCBC3 = false)
 {
     //fix Crypt Library padding
     $hexKey = $hexKey . substr($hexKey, 0, 16);
     if ($useDesModeCBC3) {
         $crypt3DES = new TripleDES(TripleDES::MODE_CBC3);
         // IDTech uses mode CRYPT_DES_MODE_CBC3
     } else {
         $crypt3DES = new TripleDES(TripleDES::MODE_ECB);
         // Chinese uses mode CRYPT_DES_MODE_ECB
     }
     $crypt3DES->setKey(Utility::hex2bin($hexKey));
     $crypt3DES->disablePadding();
     return strtoupper(bin2hex($crypt3DES->decrypt(Utility::hex2bin($hexEncryptedData))));
 }