Jump to content

Recommended Posts

Posted

Ok folks! Here's a code I want you to break. PM me the exact results of breaking this code. The first person to break it correctly... wins something... I don't know what yet.

 

I'll give you one hint. It is a sentance in English.

 

42-6E-6C-75-76-63-71-68-70-22-68-78-21-6B-71-77-62-70-6C-76-66-22-6C-79-64-77-71-68-76-6F-23-69-74-76-2F

 

It will appear in my signature as well.

Posted

Here's my guess:

 

Sentence: "Let there be darq"

Method: I looked down in your signature (which you said contained the secret phrase) and thought... hmmm....

Posted

Argh! Another cipher! Now I hate both you and Rob, 'cause I can't resist these things and I spend way more time than I should trying to break them! :)

 

I never got Rob's, though...

Posted

Robert, can you give us some clues?

Like... are those hexadecimal values? I suppose they are, because there's no letter above F...

Posted

Using a modified hexadecimal system I could get some words - but not the whole sentence, so I'm not sure I was on the right track - I'll have a play again later

Posted

Here's something for you to play with (assuming the hex codes is the right way to go): an HTML/PHP page that writes out the printable ASCII characters (codes 32 through 126), the original string, the same string with all the values converted to their decimal equivalents and then all the possible strings by using Caesar's cipher - it's an encryption method used by the Roman Emperor, Caesar, to send messages to his generals. The encryption algorithm is very simple, consisting of assigning a decimal value to each letter of the alphabet (in our case, the ASCII character set) and then shifting that value by some value. Feel free to improve it :sick:

 

><html>
<body>
<strong>Printable ASCII characters and their respective integer values</strong>
<table style="border: 1px solid black;">
<tr>
 <?php
 for($i = 32; $i < 62; $i++)
	 echo "  <td style='background: yellow;'>$i</td>";
 echo "	</tr><tr>";
 for($i = 32; $i < 62; $i++)
	 echo "  <td>".chr($i)."</td>";
 echo "	</tr><tr>";
 
 for($i = 63; $i < 93; $i++)
	 echo "  <td style='background: yellow;'>$i</td>";
 echo "	</tr><tr>";
 for($i = 63; $i < 93; $i++)
	 echo "  <td>".chr($i)."</td>";
 echo "	</tr><tr>";
 
 for($i = 94; $i < 124; $i++)
	 echo "  <td style='background: yellow;'>$i</td>";
 echo "	</tr><tr>";
 for($i = 94; $i < 124; $i++)
	 echo "  <td>".chr($i)."</td>";
 echo "	</tr><tr>";
 
 for($i = 125; $i < 127; $i++)
	 echo "  <td style='background: yellow;'>$i</td>";
 echo "	</tr><tr>";
 for($i = 125; $i < 127; $i++)
	 echo "  <td>".chr($i)."</td>";
 echo "	</tr><tr>";

 ?>
</tr>
</table>
<br /><br />
<?php
$string = "42-6E-6C-75-76-63-71-68-70-22-68-78-21-6B-71-77-62-70-6C-76-66-22-6C-79-64-77-71-68-76-6F-23-69-74-76-2F";
echo "<strong>Original (hexadecimal?) string:</strong><br />".$string."<br /><br />";


// Convert from hexadecimal to decimal
echo "<strong>Original string converted to decimal values:</strong><br />";
$string = explode("-", $string);
$dec_string = array();
foreach($string as $value)
array_push($dec_string, hexdec($value));
foreach($dec_string as $value)
echo $value."-";
echo "<br /><br />";


// Convert to text
echo "<strong>Strings by 'shifting' each character code by <delta>:</strong><br />";
echo "<table><tr><td>Char code</td>";
foreach($dec_string as $value)
echo "<td style='background: orange;'>".$value."</td>";
echo "</tr>";
for($i = 0; $i <= 94; $i++)
{
echo "<tr><td>Delta = ".$i.":</td>";
foreach($dec_string as $value)
{
 $value -= $i;
 while($value < 32)
	 $value = 126 - (31 - $value);
 $color = ($i%2 == 0)? "lightblue" : "yellow";

 echo "<td style='background: $color;'>".htmlentities(chr($value))."</td>";
}
echo "</tr>";
}
echo "</table>";

?>
</body>
</html>

Posted
Hey Andy, just curious, what'd you come up with?

 

well things like 70-6C-76-66 is the word "misc" if you offset the hex by 3.

 

you can get other words by doing more complex shifts - but none would give me a sentence

Posted

Yeah and the HAL computer in 2001 is IBM if you offset it by one. :)

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...