first commit

README.md

@@ -1,4 +1,17 @@
 Chiff69
 =======
 
-kids' stuff
+Chiff69 is a collection of encryption-algorithms, which use a keylength of 69 bit.   
+   
+Because this it made by an amateur __DO NOT__ use this software for any security applications.
+
+   
+Chiff69/a
+---------
+
+This algorithm uses 72 bit to encrypt the text, but the last 3 Bits will be set to 0. This one only uses substitutions.
+
+Chiff69/b
+---------
+
+This one uses 64 bit for the substitution (like Chiff69/a). The last 5 bits are used for a rail-fence-cpher-style pre-permutation.

chiff69a.php

@@ -0,0 +1,69 @@
+#!/usr/bin/php
+<?php
+	/*
+	 * parameters:
+	 *	1: passphrase
+	 *	2: encrypt or decrypt
+	 *	3: base64 (optimal)
+	 *	
+	 * everthing else: stdin/stdout
+	 */
+
+	if ($_SERVER['argc'] < 2)
+		exit(); // no password given
+	$passphrase = $_SERVER['argv'][1];
+
+	$key = array();
+	for ($i = 0; $i < 5; $i++)
+		$key[$i] = 0;
+
+	for ($i = 0; $i < strlen($passphrase); $i++) {
+		$char = ord(substr($passphrase, $i, 1));
+		$key[$i % 5] ^= $char;
+	}
+
+	for ($i = 0; $i < 4; $i++)
+		$key[$i] &= 0xff;
+	$key[4] &= 0x1f;
+
+	$text = "";
+
+	$stdin = fopen('php://stdin', 'r');
+ 	for ($i = 0; !feof($stdin); $i++) {
+		$char = fread($stdin, 1);
+		$text .= $char;
+	}
+
+	if (($_SERVER['argc'] > 3) && ($_SERVER['argv'][3] == "base64") && ($_SERVER['argv'][2] == "decrypt"))
+		$text = base64_decode($text);
+
+	$tmp = array();
+
+	for ($i = 0; $i < strlen($text); $i++) {
+		$tmp[$i] = ord(substr($text, $i, 1));
+	}
+	$text = $tmp;
+
+	$alg = "";
+	// we are decrypting
+	if (($_SERVER['argc'] > 2) && ($_SERVER['argv'][2] == "decrypt")) {
+		$alg = create_function('$char, $key, $i', 'return (($char - $i) - $key) & 0xff;');
+	// we are encrypting
+	} else {
+		$alg = create_function('$char, $key, $i', 'return (($char + $key) + $i) & 0xff;');
+	}
+
+	$result = array();
+	for ($i = 0; $i < count($text); $i++) {
+		$result[$i] = $alg($text[$i], $key[$i % 5], $i * (2 * ($i % 2) - 1));
+	}
+
+	for ($i = 0; $i < count($result); $i++)
+		$result[$i] = chr($result[$i]);
+	$result = implode($result);
+
+	if (($_SERVER['argc'] > 3) && ($_SERVER['argv'][3] == "base64") && ($_SERVER['argv'][2] == "encrypt"))
+		$result = base64_encode($result);
+
+	echo $result . "\n";
+?>

chiff69b.php

@@ -0,0 +1,137 @@
+#!/usr/bin/php
+<?php
+	/*
+	 * parameters:
+	 *	1: passphrase
+	 *	2: encrypt or decrypt
+	 *	3: base64 (optimal)
+	 *	
+	 * everthing else: stdin/stdout
+	 */
+
+	if ($_SERVER['argc'] < 2)
+		exit(); // no password given
+	$passphrase = $_SERVER['argv'][1];
+
+	$key = array();
+	for ($i = 0; $i < 5; $i++)
+		$key[$i] = 0x55;
+
+	for ($i = 0; $i < strlen($passphrase); $i++) {
+		$char = ord(substr($passphrase, $i, 1));
+		$key[$i % 5] ^= $char;
+	}
+
+	for ($i = 0; $i < 4; $i++)
+		$key[$i] &= 0xff;
+	$key[4] &= 0x1f;
+
+	$text = "";
+
+	$stdin = fopen('php://stdin', 'r');
+	$stderr = fopen("php://stderr", "w");
+	
+ 	for ($i = 0; !feof($stdin); $i++) {
+		$char = fread($stdin, 1);
+		$text .= $char;
+	}
+
+	if (($_SERVER['argc'] > 3) && ($_SERVER['argv'][3] == "base64") && ($_SERVER['argv'][2] == "decrypt"))
+		$text = base64_decode($text);
+
+	if ($key[4] == 0)
+		$key[4] = 0x55;
+		
+	//$key[4] = 2;
+		
+	$tmp = array();
+	
+	if (($_SERVER['argc'] > 2) && ($_SERVER['argv'][2] == "decrypt")) {
+		for ($i = 0; $i < strlen($text); $i++) {
+			$tmp[] = $text[$i];
+		}
+		
+		$text = array();
+		
+		for ($i = 0; $i < count($tmp); $i++) {
+			$text[] = $tmp[$i];
+		}
+	} else {
+		for ($i = 0; $i < $key[4]; $i++)
+			$tmp[$i] = array();
+		
+		for ($i = 0; $i < strlen($text); $i++) {
+			$tmp[$i % $key[4]][] = $text[$i];
+		}
+		
+		$max = 0;
+		
+		for($i = 0; $i < count($tmp); $i++) {
+			if (count($tmp[$i]) > $max) {
+				$max = count($tmp[$i]);
+				$i = 0;
+				continue;
+			}
+			while (count($tmp[$i]) < $max) {
+				$tmp[$i][] = " ";
+			}
+		}
+		
+		$text = array();
+		
+		for ($i = 0; $i < count($tmp); $i++) 
+			for ($j = 0; $j < count($tmp[$i]); $j++)
+				$text[] = $tmp[$i][$j];
+	}
+
+	
+	
+	$tmp = array();
+
+	for ($i = 0; $i < count($text); $i++) {
+		$tmp[$i] = ord($text[$i]);
+	}
+	$text = $tmp;
+	
+	$alg = "";
+	// we are decrypting
+	if (($_SERVER['argc'] > 2) && ($_SERVER['argv'][2] == "decrypt")) {
+		$alg = create_function('$char, $key, $i', 'return (($char - $i) - $key) & 0xff;');
+	// we are encrypting
+	} else {
+		$alg = create_function('$char, $key, $i', 'return (($char + $key) + $i) & 0xff;');
+	}
+
+	$result = array();
+	for ($i = 0; $i < count($text); $i++) {
+		$result[$i] = $alg($text[$i], $key[$i % 4], $i * (2 * ($i % 2) - 1));
+	}
+
+	for ($i = 0; $i < count($result); $i++)
+		$result[$i] = chr($result[$i]);
+		
+	if (($_SERVER['argc'] > 2) && ($_SERVER['argv'][2] == "decrypt")) {
+		$tmp = array();
+		for ($i = 0; $i < $key[4]; $i++)
+			$tmp[$i] = array();
+		
+		for ($i = 0; $i < count($result); $i++) {
+			$a = (count($result) / $key[4]);
+			$b = $i % ceil($a);
+			$tmp[intval($b)][] = $result[$i];
+		}
+		
+		$result = array();
+		
+		for ($i = 0; $i < count($tmp); $i++) 
+			for ($j = 0; $j < count($tmp[$i]); $j++)
+				$result[] = $tmp[$i][$j];
+	}
+	
+	$result = implode($result);
+
+	if (($_SERVER['argc'] > 3) && ($_SERVER['argv'][3] == "base64") && ($_SERVER['argv'][2] == "encrypt"))
+		$result = base64_encode($result);
+
+	echo $result . "\n";
+?>