Location: PHPKode > scripts > RemoteSQL > remotesql/class.rc4crypt.php
<?php

// Class Made By Mukul Sabharwal [hide@address.com]
// http://www.devhome.net/php/
// On October 21, 2000

class rc4crypt {

	function endecrypt ($pwd, $data, $case) {

		if ($case == 'de') {

			$data = urldecode($data);

		}

		$key[] = "";
		$box[] = "";
		$temp_swap = "";
		$pwd_length = 0;

		$pwd_length = strlen($pwd);

		for ($i = 0; $i <= 255; $i++) {

			$key[$i] = ord(substr($pwd, ($i % $pwd_length), 1));
			$box[$i] = $i;

		}

		$x = 0;

		for ($i = 0; $i <= 255; $i++) {

			$x = ($x + $box[$i] + $key[$i]) % 256;
			$temp_swap = $box[$i];

			$box[$i] = $box[$x];
			$box[$x] = $temp_swap;

		}

		$temp = "";
		$k = "";

		$cipherby = "";
		$cipher = "";

		$a = 0;
		$j = 0;

		for ($i = 0; $i < strlen($data); $i++) {

			$a = ($a + 1) % 256;
			$j = ($j + $box[$a]) % 256;

			$temp = $box[$a];
			$box[$a] = $box[$j];

			$box[$j] = $temp;

			$k = $box[(($box[$a] + $box[$j]) % 256)];
			$cipherby = ord(substr($data, $i, 1)) ^ $k;

			$cipher .= chr($cipherby);

		}

		if ($case == 'de') {

			$cipher = urldecode(urlencode($cipher));

		} else {

			$cipher = urlencode($cipher);

		}

		return $cipher;

	}

}
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