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<?php function csidAES($strMessage, $strKey, $strOperation = 'encrypt') { /** * csidAES * Provides encryption (default) and decryption suitable for use with the CSID SMS API. * @license CSID Partner Restricted * @param string $strMessage The message (cleartext or cyphertext) on which to operate. * @param string $strKey The agreed-upon encryption key. * @param string $strOperation OPTIONAL: One of 'encrypt' or 'decrypt' (default: * 'encrypt'). * @return string|bool Returns the resulting text, or FALSE on failure. */ echo $strMessage . ' is input to : ' . $strOperation . " "; switch ($strOperation){ case 'encrypt': echo "md5 of '".$strMessage . "' is : " . md5($strMessage) . " "; $AES_KEY = substr(md5($strKey), 0, 16); $iv = mcrypt_create_iv(16, MCRYPT_RAND); echo $iv . " - random generated IV "; //Perform encryption $ctext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $AES_KEY, $strMessage, MCRYPT_MODE_CBC, $iv); echo $ctext . " - encrypted "; $ctext = $iv.$ctext; echo $ctext . " - iv.ctext "; // Base64-encode, then urlencode the ciphertext $ctext = urlencode(base64_encode($ctext)); echo $ctext . " - url encoded ctext "; return $ctext; break; case 'decrypt': $key_size = mcrypt_get_key_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC); echo $key_size . " - key_size "; $AES_KEY = substr(md5($strKey), 0, 16); echo $AES_KEY . " - AES_KEY "; $iv = mcrypt_create_iv(16, MCRYPT_RAND); echo $iv . " - random generated IV "; //Perform a base64_decode. $ctext = base64_decode($strMessage); echo $ctext . " - decoded input "; $thIV = substr($ctext,0,16); echo "thIV : " . $thIV . " "; $thingForDecoding = substr($ctext,16); echo "thingForDecoding : " . $thingForDecoding . " "; //NOTE: No need to urldecode; the API server did it for us. //Perform decryption $ptext = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $AES_KEY, $ctext, MCRYPT_MODE_CBC, $iv); echo $ptext . " - decrypted "; $ptext = substr($ptext,16); echo $ptext . " - a substring of it"; $final = str_replace(chr(0),"",$ptext); echo $final . " - final"; return $final;//str_replace(chr(0),"",$ptext); break; default: return false; break; } } $csIDn = new ReflectionFunction('csidAES'); $originalText = 'Mirko Atanasov'; $encrypted = $csIDn->invoke($originalText , 'g3rWsiNm7Gwh9qMc','encrypt'); echo $encrypted; echo " and now the decryption "; $decrypted = $csIDn->invoke($encrypted, 'g3rWsiNm7Gwh9qMc','decrypt'); echo $decrypted; ?>