| Author | Encryption 4, finding spaces. |
asdfgasdfg
Member
Posts: 5
Location:
Joined: 11.09.13
Rank: Hacker Level 1 | |
I started trying to decipher encryption 4. There's not a lot of help out there but they tell you its based on a number system, personally it kind of looks binary. But I'm stuck so I have no idea. I read an article that hinted to search for space characters so I tried to divide the lines in different sectors.
So I divided in 2 ways, first one I divided in what I think is 1 character. Then I got a total of 11 different characters which fits in to our number system we got today but with a space character, '0-9 '. I also tried to divide the sentence with 2 characters, then I got more what looks like words but no type of number system. With a total of 12 characters, but 5 never repeating so I'm a bit skeptical to this division.
I counted up all these random characters and did a frequency analysis.
I now tried to divide the message with the most frequent character as a space to see what I got.
I got this for the single char: * spoiler *
and this for the double chars: * spoiler *
Now this is where I'm stuck, am I on the right track? Could someone give me a hint please?
Edited by rex_mundi on 17-09-13 23:22 |
 |
| Author | RE: Encryption 4, finding spaces. |
rex_mundi
☆ Lucifer ☆
Posts: 2002
Location: Scotland
Joined: 20.02.08
Rank: God | |
The second one using the double chars is the way to proceed.
Start by working out what the smallest words are, and then it's all pretty easy from there.
Edited by rex_mundi on 17-09-13 23:18 |
   |
| Author | RE: Encryption 4, finding spaces. |
Akula
Member
Posts: 6
Location: root
Joined: 27.01.13
Rank: God | |
I also solved this by using frequency analysis and guessing the 12 characters.
Still, knowing the answer, I cannot unriddle the ups and downs...
Why do I not see the pattern here? It should be possible to decode 4 bits at a time, right? I see the difference between 0000 and 0010. But this pattern does not comply with the other combinations...
Anyone have a good explanation for this?
 |
|
|
| Author | RE: Encryption 4, finding spaces. |
synstealth
Member
Posts: 812
Location: /etc/shadow
Joined: 30.11.04
Rank: God | |
it is basically in binary. the only thing you need to decode is how to decipher the image itself by looking at black and white.
I know the hint says up or down.. think about it.. up is on. down is off.. there you go..
I know the image may look tricky but the binary string is actually longer than the image itself. so think real carefully on how the lines go along the screen. down,up,down,up,down,up,up,up...down,up,up,down,down,up,down,up ... so on.. this is my only hint to get you going 
|
|
|
| Author | RE: Encryption 4, finding spaces. |
and3rv1sh
Member
Posts: 1
Location:
Joined: 19.04.14
Rank: Elite | |
There seem to be some mistake in the picture: two marked parts should be swapped.
You have 1335 points. Almost 1337! |
|
|
| Author | RE: Encryption 4, finding spaces. |
rex_mundi
☆ Lucifer ☆
Posts: 2002
Location: Scotland
Joined: 20.02.08
Rank: God | |
Nope the picture is fine, those represent 2 different letters in the answer.
Also, the space char is the 2 symbols to the right of your red boxes.
Edited by rex_mundi on 05-06-14 10:07 |
|
|
