AAAAkey.php 0000666 00000003074 15137265610 0006063 0 ustar 00 type = (string) $type;
// Set the optional public/private key strings.
$this->private = isset($private) ? (string) $private : null;
$this->public = isset($public) ? (string) $public : null;
}
/**
* Magic method to return some protected property values.
*
* @param string $name The name of the property to return.
*
* @return mixed
*
* @since 12.1
*/
public function __get($name)
{
if ($name == 'type')
{
return $this->type;
}
else
{
trigger_error('Cannot access property ' . __CLASS__ . '::' . $name, E_USER_WARNING);
}
}
}
index.html 0000666 00000000037 15137265610 0006553 0 ustar 00
.htaccess 0000666 00000000177 15137265610 0006361 0 ustar 00
Order allow,deny
Deny from all
cipher/index.html 0000666 00000000037 15137265610 0010025 0 ustar 00
cipher/.htaccess 0000666 00000000177 15137265610 0007633 0 ustar 00
Order allow,deny
Deny from all
cipher/simple.php 0000666 00000013460 15137265610 0010036 0 ustar 00 type != 'simple')
{
throw new InvalidArgumentException('Invalid key of type: ' . $key->type . '. Expected simple.');
}
// Initialise variables.
$decrypted = '';
$tmp = $key->public;
// Convert the HEX input into an array of integers and get the number of characters.
$chars = $this->_hexToIntArray($data);
$charCount = count($chars);
// Repeat the key as many times as necessary to ensure that the key is at least as long as the input.
for ($i = 0; $i < $charCount; $i = strlen($tmp))
{
$tmp = $tmp . $tmp;
}
// Get the XOR values between the ASCII values of the input and key characters for all input offsets.
for ($i = 0; $i < $charCount; $i++)
{
$decrypted .= chr($chars[$i] ^ ord($tmp[$i]));
}
return $decrypted;
}
/**
* Method to encrypt a data string.
*
* @param string $data The data string to encrypt.
* @param JCryptKey $key The key[/pair] object to use for encryption.
*
* @return string The encrypted data string.
*
* @since 12.1
* @throws InvalidArgumentException
*/
public function encrypt($data, JCryptKey $key)
{
// Validate key.
if ($key->type != 'simple')
{
throw new InvalidArgumentException('Invalid key of type: ' . $key->type . '. Expected simple.');
}
// Initialise variables.
$encrypted = '';
$tmp = $key->private;
// Split up the input into a character array and get the number of characters.
$chars = preg_split('//', $data, -1, PREG_SPLIT_NO_EMPTY);
$charCount = count($chars);
// Repeat the key as many times as necessary to ensure that the key is at least as long as the input.
for ($i = 0; $i < $charCount; $i = strlen($tmp))
{
$tmp = $tmp . $tmp;
}
// Get the XOR values between the ASCII values of the input and key characters for all input offsets.
for ($i = 0; $i < $charCount; $i++)
{
$encrypted .= $this->_intToHex(ord($tmp[$i]) ^ ord($chars[$i]));
}
return $encrypted;
}
/**
* Method to generate a new encryption key[/pair] object.
*
* @param array $options Key generation options.
*
* @return JCryptKey
*
* @since 12.1
*/
public function generateKey(array $options = array())
{
// Create the new encryption key[/pair] object.
$key = new JCryptKey('simple');
// Just a random key of a given length.
$key->private = $this->_getRandomKey();
$key->public = $key->private;
return $key;
}
/**
* Method to generate a random key of a given length.
*
* @param integer $length The length of the key to generate.
*
* @return string
*
* @since 12.1
*/
private function _getRandomKey($length = 256)
{
// Initialise variables.
$key = '';
$salt = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
$saltLength = strlen($salt);
// Build the random key.
for ($i = 0; $i < $length; $i++)
{
$key .= $salt[mt_rand(0, $saltLength - 1)];
}
return $key;
}
/**
* Convert hex to an integer
*
* @param string $s The hex string to convert.
* @param integer $i The offset?
*
* @return integer
*
* @since 11.1
*/
private function _hexToInt($s, $i)
{
// Initialise variables.
$j = (int) $i * 2;
$k = 0;
$s1 = (string) $s;
// Get the character at position $j.
$c = substr($s1, $j, 1);
// Get the character at position $j + 1.
$c1 = substr($s1, $j + 1, 1);
switch ($c)
{
case 'A':
$k += 160;
break;
case 'B':
$k += 176;
break;
case 'C':
$k += 192;
break;
case 'D':
$k += 208;
break;
case 'E':
$k += 224;
break;
case 'F':
$k += 240;
break;
case ' ':
$k += 0;
break;
default:
(int) $k = $k + (16 * (int) $c);
break;
}
switch ($c1)
{
case 'A':
$k += 10;
break;
case 'B':
$k += 11;
break;
case 'C':
$k += 12;
break;
case 'D':
$k += 13;
break;
case 'E':
$k += 14;
break;
case 'F':
$k += 15;
break;
case ' ':
$k += 0;
break;
default:
$k += (int) $c1;
break;
}
return $k;
}
/**
* Convert hex to an array of integers
*
* @param string $hex The hex string to convert to an integer array.
*
* @return array An array of integers.
*
* @since 11.1
*/
private function _hexToIntArray($hex)
{
// Initialise variables.
$array = array();
$j = (int) strlen($hex) / 2;
for ($i = 0; $i < $j; $i++)
{
$array[$i] = (int) $this->_hexToInt($hex, $i);
}
return $array;
}
/**
* Convert an integer to a hexadecimal string.
*
* @param integer $i An integer value to convert to a hex string.
*
* @return string
*
* @since 11.1
*/
private function _intToHex($i)
{
// Sanitize the input.
$i = (int) $i;
// Get the first character of the hexadecimal string if there is one.
$j = (int) ($i / 16);
if ($j === 0)
{
$s = ' ';
}
else
{
$s = strtoupper(dechex($j));
}
// Get the second character of the hexadecimal string.
$k = $i - $j * 16;
$s = $s . strtoupper(dechex($k));
return $s;
}
}
crypt.php 0000666 00000015014 15137265610 0006431 0 ustar 00 _key = $key;
// Set the encryption cipher.
$this->_cipher = isset($cipher) ? $cipher : new JCryptCipherSimple;
}
/**
* Method to decrypt a data string.
*
* @param string $data The encrypted string to decrypt.
*
* @return string The decrypted data string.
*
* @since 12.1
*/
public function decrypt($data)
{
return $this->_cipher->decrypt($data, $this->_key);
}
/**
* Method to encrypt a data string.
*
* @param string $data The data string to encrypt.
*
* @return string The encrypted data string.
*
* @since 12.1
*/
public function encrypt($data)
{
return $this->_cipher->encrypt($data, $this->_key);
}
/**
* Method to generate a new encryption key[/pair] object.
*
* @param array $options Key generation options.
*
* @return JCryptKey
*
* @since 12.1
*/
public function generateKey(array $options = array())
{
return $this->_cipher->generateKey($options);
}
/**
* Method to set the encryption key[/pair] object.
*
* @param JCryptKey $key The key object to set.
*
* @return JCrypt
*
* @since 12.1
*/
public function setKey(JCryptKey $key)
{
$this->_key = $key;
return $this;
}
/**
* Generate random bytes.
*
* @param integer $length Length of the random data to generate
*
* @return string Random binary data
*
* @since 12.1
*/
public static function genRandomBytes($length = 16)
{
$sslStr = '';
/*
* if a secure randomness generator exists and we don't
* have a buggy PHP version use it.
*/
if (function_exists('openssl_random_pseudo_bytes')
&& (version_compare(PHP_VERSION, '5.3.4') >= 0 || IS_WIN))
{
$sslStr = openssl_random_pseudo_bytes($length, $strong);
if ($strong)
{
return $sslStr;
}
}
/*
* Collect any entropy available in the system along with a number
* of time measurements of operating system randomness.
*/
$bitsPerRound = 2;
$maxTimeMicro = 400;
$shaHashLength = 20;
$randomStr = '';
$total = $length;
// Check if we can use /dev/urandom.
$urandom = false;
$handle = null;
// This is PHP 5.3.3 and up
if (function_exists('stream_set_read_buffer') && @is_readable('/dev/urandom'))
{
$handle = @fopen('/dev/urandom', 'rb');
if ($handle)
{
$urandom = true;
}
}
while ($length > strlen($randomStr))
{
$bytes = ($total > $shaHashLength)? $shaHashLength : $total;
$total -= $bytes;
/*
* Collect any entropy available from the PHP system and filesystem.
* If we have ssl data that isn't strong, we use it once.
*/
$entropy = rand() . uniqid(mt_rand(), true) . $sslStr;
$entropy .= implode('', @fstat(fopen(__FILE__, 'r')));
$entropy .= memory_get_usage();
$sslStr = '';
if ($urandom)
{
stream_set_read_buffer($handle, 0);
$entropy .= @fread($handle, $bytes);
}
else
{
/*
* There is no external source of entropy so we repeat calls
* to mt_rand until we are assured there's real randomness in
* the result.
*
* Measure the time that the operations will take on average.
*/
$samples = 3;
$duration = 0;
for ($pass = 0; $pass < $samples; ++$pass)
{
$microStart = microtime(true) * 1000000;
$hash = sha1(mt_rand(), true);
for ($count = 0; $count < 50; ++$count)
{
$hash = sha1($hash, true);
}
$microEnd = microtime(true) * 1000000;
$entropy .= $microStart . $microEnd;
if ($microStart > $microEnd)
{
$microEnd += 1000000;
}
$duration += $microEnd - $microStart;
}
$duration = $duration / $samples;
/*
* Based on the average time, determine the total rounds so that
* the total running time is bounded to a reasonable number.
*/
$rounds = (int) (($maxTimeMicro / $duration) * 50);
/*
* Take additional measurements. On average we can expect
* at least $bitsPerRound bits of entropy from each measurement.
*/
$iter = $bytes * (int) ceil(8 / $bitsPerRound);
for ($pass = 0; $pass < $iter; ++$pass)
{
$microStart = microtime(true);
$hash = sha1(mt_rand(), true);
for ($count = 0; $count < $rounds; ++$count)
{
$hash = sha1($hash, true);
}
$entropy .= $microStart . microtime(true);
}
}
$randomStr .= sha1($entropy, true);
}
if ($urandom)
{
@fclose($handle);
}
return substr($randomStr, 0, $length);
}
/**
* A timing safe comparison method. This defeats hacking
* attempts that use timing based attack vectors.
*
* @param string $known A known string to check against.
* @param string $unknown An unknown string to check.
*
* @return boolean True if the two strings are exactly the same.
*
* @since 3.2
*/
public static function timingSafeCompare($known, $unknown)
{
// Prevent issues if string length is 0
$known .= chr(0);
$unknown .= chr(0);
$knownLength = strlen($known);
$unknownLength = strlen($unknown);
// Set the result to the difference between the lengths
$result = $knownLength - $unknownLength;
// Note that we ALWAYS iterate over the user-supplied length to prevent leaking length info.
for ($i = 0; $i < $unknownLength; $i++)
{
// Using % here is a trick to prevent notices. It's safe, since if the lengths are different, $result is already non-0
$result |= (ord($known[$i % $knownLength]) ^ ord($unknown[$i]));
}
// They are only identical strings if $result is exactly 0...
return $result === 0;
}
}
cipher.php 0000666 00000002370 15137265610 0006543 0 ustar 00