23/06/2005, 16:35
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| | Fecha de Ingreso: febrero-2004
Mensajes: 1.987
Antigüedad: 20 años, 2 meses Puntos: 22 | |
A este hombre tampoco le fue muy bien... Código PHP: <? /* ----------------------------------------------- @Author: Developped by [email protected] @Site: http://www.EZScripts.net/ ----------------------------------------------- How's the my encryption algorithm work: First it will generate an encryption key with the string you supply: Key 1 will be equal to the numerical value of each character in your crypt key. Key 2 will be equal to the length of your crypt key. For each character in the string you wish to encrypt, it will do the following mathematical calculations, where V is the final value of the encoded character and C is the value of the character currently encrypting: V = C * Key1 V = V + Key2 It will then separate each character in the original string with a character between 65 and 90 (cap. letters). To decrypt the string, it will do the opposite calculations, where V is the final value of the decrypted character and C is the value of the encrypted character: V = V / Key1 V = C – Key2 */ /* ----------------------------------------------- @Name: Encrypt() @Args: $txt-> String to encrypt. @Args: $CRYPT_KEY -> String used to generate a encryption key. @Returns: $estr -> Encrypted string. ----------------------------------------------- */ function encrypt($txt,$CRYPT_KEY){ if (!$txt && $txt != "0"){ return false; exit; } if (!$CRYPT_KEY){ return false; exit; } $kv = keyvalue($CRYPT_KEY); $estr = ""; $enc = ""; for ($i=0; $i<strlen($txt); $i++){ $e = ord(substr($txt, $i, 1)); $e = $e + $kv[1]; $e = $e * $kv[2]; (double)microtime()*1000000; $rstr = chr(rand(65, 90)); $estr .= "$rstr$e"; } return $estr; } /* ----------------------------------------------- @Name: Decrypt() @Args: $txt-> String to decrypt. @Args: $CRYPT_KEY -> String used to encrypt the string. @Returns: $estr -> Decrypted string. ----------------------------------------------- */ function decrypt($txt, $CRYPT_KEY){ if (!$txt && $txt != "0"){ return false; exit; } if (!$CRYPT_KEY){ return false; exit; } $kv = keyvalue($CRYPT_KEY); $estr = ""; $tmp = ""; for ($i=0; $i<strlen($txt); $i++) { if ( ord(substr($txt, $i, 1)) > 64 && ord(substr($txt, $i, 1)) < 91 ) { if ($tmp != "") { $tmp = $tmp / $kv[2]; $tmp = $tmp - $kv[1]; $estr .= chr($tmp); $tmp = ""; } } else { $tmp .= substr($txt, $i, 1); } } $tmp = $tmp / $kv[2]; $tmp = $tmp - $kv[1]; $estr .= chr($tmp); return $estr; } /* ----------------------------------------------- @Name: keyvalue() @Args: $CRYPT_KEY -> String used to generate a encryption key. @Returns: $keyvalue -> Array containing 2 encryption keys. ----------------------------------------------- */ function keyvalue($CRYPT_KEY){ $keyvalue = ""; $keyvalue[1] = "0"; $keyvalue[2] = "0"; for ($i=1; $i<strlen($CRYPT_KEY); $i++) { $curchr = ord(substr($CRYPT_KEY, $i, 1)); $keyvalue[1] = $keyvalue[1] + $curchr; $keyvalue[2] = strlen($CRYPT_KEY); } return $keyvalue; } $a='asdqwe'; echo encrypt($a,5); $b='N0S0E0P0W0V0'; echo '<hr>'; echo decrypt($b,5); exit; ?> Si alguien lo entiende y puede corregirlo, por favor piblicarlo. |