Good Ol' Fashion Crypto

[Mist7676]

I will give a day till the first hint

[theplague42]

Hmmm awfully short ciphertext.

[gandalf5166]

The main problem is that we don't know if the words are spelled right >.>

[Mist7676]

They are. I sent them through spellcheck and code check

[theplague42]

The main problem is that we don't know if the words are spelled right >.>

lol

[Packbat]

They are. I sent them through spellcheck and code check

No, you missed a typo. The solution (by inspection) is:

Code: Select all

A question that sometimes drives me hazy: am I or are the others crazy?
     *

The indicated letter should be an A ciphertext but is recorded as an S.

New cipher to come soon.

Edit: [Edit 2: changed key - plaintext remains identical:]

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GFJ DQCGCDV CKVGQRDG RV GU VGXE DBUVJ GU
KXGRQJ, XKY XRGFUQV QJXY GFCV XYICDJ;
LRG GFJE XBSXEV GFCKP CG VXZJQ GU VGXE
DBUVJ GU XRGFUQV SFU FXIJ VGXEJY DBUVJ
GU KXGRQJ.

[Mist7676]

Good job but how did you get it? Ran through the alphabet until you got a reasonable sentence?

[Packbat]

Unique letters are likely to be I or A, and because "BP" was a repeated digraph (particularly at the start of words) "BPIB" was clearly "that" and "BPM" "the". From there, "IZM" = "are", "Q" = "i" (because A was taken), "WZ" = "or", "A" = "s" (what other letter could go at the end of "other"?), and it flowed pretty easily from there.

That is, after I Googled the words that I had and found the original quote. It

was

awfully short, and "hazy" is such a weak word choice that I wanted confirmation before I put down "crazy" as the last word.

[Packbat]

The new cipher is

easy

, by the way.

[theplague42]

What was the key to the last one? Or was it just a scrambled cipher-alphabet?

[Packbat]

I didn't check.

*checks*

It was a Caesar, starting with I.

[Packbat]

Ugh, I think I screwed up the key for mine - should I redo it?

Edit: I redid it. It's the same type of code and the same message - the only difference is half the key - so any work you've done should be easy to transfer over.

[Mist7676]

I - A
J - B
K - C
L - D
M - E
N - F
O - G
P - H
Q - I
R - J
S - K
T - L
U - M
V - N
W - O
X - P
Y - Q
Z - R
A - S
B - T
C - U
D - V
E - W
F - X
G - Y
H - Z

Key

[Packbat]

Bump.

Code: Select all

GFJ DQCGCDV CKVGQRDG RV GU VGXE DBUVJ GU
KXGRQJ, XKY XRGFUQV QJXY GFCV XYICDJ;
LRG GFJE XBSXEV GFCKP CG VXZJQ GU VGXE
DBUVJ GU XRGFUQV SFU FXIJ VGXEJY DBUVJ
GU KXGRQJ.

[Stefunny]

So you are doing one step substitutions? Why not just do cryptograms?

[Packbat]

The rules do not restrict us to one-step substitutions - Haschel Cedricson posted a Vigenère, and I tried a Playfair and a one-step transposition cipher (neither of which anyone solved). I've only gone with a simple substitution now because that is what appears popular.

Edit: Also - we

are

doing cryptograms. That is what the thread is for.

[Stefunny]

Ah, I guess I only read a few posts where it seemed like it was mostly one step substitutions. I'm unfamiliar with Vigenere and Playfair. Which posts had the unsolved ones?

I'll come back and look at this later. I love cryptograms.

[Packbat]

I posted the solution to the Playfair, but the ciphertext is here at #21 if you still want to try it - the solution does not appear until #32. The cipher posted at #36 I have not posted any solution to.

[theplague42]

The rules do not restrict us to one-step substitutions - Haschel Cedricson posted a Vigenère, and I tried a Playfair and a one-step transposition cipher (neither of which anyone solved). I've only gone with a simple substitution now because that is what appears popular.

Edit: Also - we

are

doing cryptograms. That is what the thread is for.

That's because it's rare to find someone who can cryptanalyze a transposition cipher

[theplague42]

Next time I have a few hours to be bored, I'll study the Lanaki lesson on transposition cryptanalysis.

[Stefunny]

I started looking at the one in post # 36, but it is late here and the grouping of letters hurts my head. I will take a stab at it again tomorrow.

[theplague42]

Not finding anything yet. Strictly following freq analysis isn't working.

[Packbat]

Bump.

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GFJ DQCGCDV CKVGQRDG RV GU VGXE DBUVJ GU
KXGRQJ, XKY XRGFUQV QJXY GFCV XYICDJ;
LRG GFJE XBSXEV GFCKP CG VXZJQ GU VGXE
DBUVJ GU XRGFUQV SFU FXIJ VGXEJY DBUVJ
GU KXGRQJ.

[Packbat]

Okay, Stefunny PMed me a solution to my cryptogram, but she hasn't posted a new one. I'm opening it up to anyone who wants to.

[Mist7676]

Code: Select all

IH