Can you crack my code

[yud]

Yes I have too much tie on my hand, and yes I made up my own code

Ykouh Lozdu Lujbb Scbkd Eboyl Izexz Hvwby Hvssh Ijdtq Olcbp Okneo Dssqj Frmxx Weqvo Efgbu Hwdix Frhav Nwsxg Eqquz Pyanc Ydlnw Sziba Hszoz Sgbhm Sgwoa Nareq

[Zag]

Yes I have too much tie on my hand, and yes I made up my own code

Ykouh Lozdu Lujbb Scbkd Eboyl Izexz Hvwby Hvssh Ijdtq Olcbp Okneo Dssqj Frmxx Weqvo Efgbu Hwdix Frhav Nwsxg Eqquz Pyanc Ydlnw Sziba Hszoz Sgbhm Sgwoa Nareq

I think it means that:

IIIII aaaaa lllll sssss ooooo hhhhh aaaaa vvvvv eeeee ttttt ooooo ooooo mmmmm uuuuu ccccc hhhhh ttttt iiiii mmmmm eeeee ooooo nnnnn mmmmm yyyyy hhhhh aaaaa nnnnn ddddd 

[Reinier]

Letter frequency analysis is not helping... yet
Can you give us a hint?

[yud]

write a square of the alphabet

abc...
bcd
.
.
.

the statement has been broken up it 5 letter word

[Mr. Whippy]

Hmmm....

 

Looks Norwegian to me...


or Finnish.

[Carlos]

Is this correct? => "my civil war class is rather (....)"

[Reinier]

It looks like a Playfair cypher with a weird, big alphabet square?
There's 26 groups of letters and 26 letters in the alphabet... no coincidence I guess?

My possible solutions start with UOEPV, JYNXB and LKFYB, so I'm guessing I'm not even close

[Carlos]

got this so far, but don't know if I'm doing the correct decoding: "my civil war class is rather boring I think the ethics professor is odd but ..."

[MTguy]

The only cipher I know is bacons cipher but thats defiantly not it. I have no idea.

[Reinier]

got this so far, but don't know if I'm doing the correct decoding: "my civil war class is rather boring I think the ethics professor is odd but ..."

How can it be NOT correct if you've come that far?

[yud]

got this so far, but don't know if I'm doing the correct decoding: "my civil war class is rather boring I think the ethics professor is odd but ..."

yep you are on to it

[Carlos]

lol
This is what I could get, there's something in the middle missing.

"my civil war class is rather boring I think the ethics professor is odd but (...) seeing pretty girls but who doesn't yes i am a nerd"

[AHB]

Hmmm....
 
Looks Norwegian to me...
or Finnish.

It really is Norwegian..   

[yud]

lol
This is what I could get, there's something in the middle missing.

"my civil war class is rather boring I think the ethics professor is odd but (...) seeing pretty girls but who doesn't yes i am a nerd"

problem with "Nwsxg" ? I made a slight mistake it should be "Nwsxh" and should translate to enjoy.

Also, mind telling the class how you decoded it?

[Reinier]

Hah, first thing I tried yesterday was a simple ROT 13, the last 5 digits translate to ANERD... First 5 digits translate to MYCIV with ROT 14. So I guess it's a ROT(x) with a variable x (Caesarian Shift). 
So, it's not really your own code

[Carlos]

problem with "Nwsxg" ? I made a slight mistake it should be "Nwsxh" and should translate to enjoy.

Also, mind telling the class how you decoded it?

That one I had figured out it might be "enjoy" instead of "enjox". But there are about four "fivelets" before that which I can't decode: weqvo efgbu hwdix frhav. I managed to get something like  "fall owing stupids zet ?? ", got stuck here, then skip to end and did the "decode" backwards until I could.

How have I decoded it? I assumed from start this should be some caesar/rotor based cypher, i.e. rotating letters on alphabet. But each letter did not have a single correspondence, so a number of rotations were being used (under my
hypothesis, that is). As you have the text divided in "fivelets", I assume each fivelet should have its own rotation.

So I made a quick script that did all rotations per fivelet. That gave me 25 new fivelets per one of your original fivelet (one by rotation). I wrote 25 per line, and then manually tried to pic one of the 25 fivelets on each line that made sense in english followed by other on the next line.

script

Code: [Select]

awk 'BEGIN {
i=0
a[i++] = "ykouh"; a[i++] = "lozdu"; a[i++] = "lujbb"; a[i++] = "scbkd";
a[i++] = "eboyl"; a[i++] = "izexz"; a[i++] = "hvwby"; a[i++] = "hvssh";
a[i++] = "ijdtq"; a[i++] = "olcbp"; a[i++] = "okneo"; a[i++] = "dssqj";
a[i++] = "frmxx"; a[i++] = "weqvo"; a[i++] = "efgbu"; a[i++] = "hwdix";
a[i++] = "frhav"; a[i++] = "nwsxg"; a[i++] = "eqquz"; a[i++] = "pyanc";
a[i++] = "ydlnw"; a[i++] = "sziba"; a[i++] = "hszoz"; a[i++] = "sgbhm";
a[i++] = "sgwoa"; a[i++] = "nareq";

T="abcdefghijklmnopqrstuvwxyz"

n=i
for (i=0; i<n; i++) {
        s=a[i]
        for (D=1; D<=26; D++) {
                for (j=1; j<=length(s); j++) {
                        c = substr(s, j, 1)
                        p = index(T, c) + D
                        if (p > 26) p = p - 26
                        d = substr(T, p, 1)
                        #print p
                        printf "%c", d
                }
                printf " "
        }
        printf "\n"
} }'

output produced (bolds are my manual findings)

Code: [Select]

zlpvi amqwj bnrxk cosyl dptzm equan frvbo gswcp htxdq iuyer jvzfs kwagt lxbhu [b]myciv[/b] nzdjw oaekx pbfly qcgmz rdhna seiob tfjpc ugkqd vhlre wimsf xjntg ykouh
mpaev nqbfw orcgx psdhy qteiz rufja svgkb twhlc uximd vyjne wzkof xalpg ybmqh zcnri adosj beptk cfqul dgrvm ehswn fitxo gjuyp hkvzq [b]ilwar[/b] jmxbs knyct lozdu
mvkcc nwldd oxmee pynff qzogg raphh sbqii tcrjj udskk vetll wfumm xgvnn yhwoo zixpp ajyqq bkzrr [b]class[/b] dmbtt encuu fodvv gpeww hqfxx irgyy jshzz ktiaa lujbb
(...)


I could not figure any logic on the number of rotations used per each "fivelet".

[Carlos]

Hah, first thing I tried yesterday was a simple ROT 13, the last 5 digits translate to ANERD... First 5 digits translate to MYCIV with ROT 14. So I guess it's a ROT(x) with a variable x (Caesarian Shift). 
So, it's not really your own code

Exactly, that's it. That was by though also, so I made a brute force approach doing all possible rot(x) per fivelet. I couldn't find the logic on the different 'x' sequence, though.

[Reinier]

Hah, first thing I tried yesterday was a simple ROT 13, the last 5 digits translate to ANERD... First 5 digits translate to MYCIV with ROT 14. So I guess it's a ROT(x) with a variable x (Caesarian Shift). 
So, it's not really your own code

Exactly, that's it. That was by though also, so I made a brute force approach doing all possible rot(x) per fivelet. I couldn't find the logic on the different 'x' sequence, though.

I wanted to solve this by coding a bit in php but didn't actually have the time

So I just used this Caesarian Shift solver http://rumkin.com/tools/cipher/caesar.php

By the way, it would have been waaaaay harder to solve if Yud had used a different alphabet instead of abcdef...

[yud]

Hah, first thing I tried yesterday was a simple ROT 13, the last 5 digits translate to ANERD... First 5 digits translate to MYCIV with ROT 14. So I guess it's a ROT(x) with a variable x (Caesarian Shift). 
So, it's not really your own code

true, it is a take on the caesar shift but the method of shifting was an idea that just came to me, so other then useing the basic idea of the caesar shift, any similarity between my code and any other code is coincidence

[yud]

you did not find the logic to the shifts once you had the 1st fivelet why didn't you play around with it to find the logic?

[Carlos]

I did try a number of ideas that came my mind, but couldn't find any pattern. I'll try again later at night.

[yud]

That one I had figured out it might be "enjoy" instead of "enjox". But there are about four "fivelets" before that which I can't decode: weqvo efgbu hwdix frhav. I managed to get something like  "fall owing stupids zet ?? ", got stuck here, then skip to end and did the "decode" backwards until I could.

"fall owing stupids zet ?? "

well I'll give you "fallowing"  efgbu hwdix frhav (should be fshav sorry was doing it by hand)

"my civil war class is rather boring I think the ethics professor is odd but fallowing (...) enjoy seeing pretty girls but who doesn't yes i am a nerd"