Re: Background Noise - OOC Boards

Should add for posterity's sake that the first intentional cipher was a shift cipher used to communicate orders with Roman Generals and at that time they may have included spaces in their ciphers since it was deemed that a shift cipher was already complicated enough to prevent unintended readers from understanding the message. But contemporary, non-recreational ciphers almost always exclude spaces between words.

A traditional format is to see a space after every 5 letters to make it easier to break down (instead of a long string of characters) - but that is used by those attacking the system for their own simplicity. The sender and receiver of the message likely do not need anything more than a string of characters.

~Robert

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Re: Background Noise - OOC Boards

I think the Greek version never was outside this thread actually, it was supposed to be English the whole time in the other thread. The message was supposed to read "Toi kratistoi" (inversed) but I'll recheck if I wrote it down wrong. I think it's right: the
- t
--- o
.. i
, right?

Anyway, I see your point about the punctuations.  It's impossible to have letter case changes with this kind of cipher unless one has a mind more vicious than mine... or at least, a mind more devious than mine. The exclamation mark was supposed to be a hint about the sentence structure, but I guess it was more confusing than anything else. And the spaces were supposed to be a reading help as I assumed most people are not too familiar with the classic attack strategies. Anyway, well done on extracting the message! Have an Internet Cookie now and rest, young hero.

(Want me to stop with the puzzles? I could make more standardised Caesar Ciphers if that's what you'd prefer.)

EDIT: Oh, and I did too encrypt it "slightly" considering my original puzzle. The merest sight of which would drive you mad, MAD I tell you!

Last edited by Michael Aker (2012-03-20 21:00:48)

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Re: Background Noise - OOC Boards

*Looks from Michael's wild eyes, foaming mouth, etc., to Robert* *nods*

I believe him, you know.

Ash

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Re: Background Noise - OOC Boards

SANITY IS FOR THE WEAK and also productive members of society I guess.

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Re: Background Noise - OOC Boards

*coughs and raises hand*

You know I'm a girl, right?

I have no idea what any of you are talking about.

NO IDEA.

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Re: Background Noise - OOC Boards

RLongtin wrote:

Yes those are called "one-time pads" and are invulnerable to attack unless you use them more than once (going against the "one-time" portion of the name).

~Robert

Yes, like Soviet intelligence did in the late 1940s...

Silent

Re: Background Noise - OOC Boards

There wasn't an exclamation mark in your original morse code post, hence my confusion about the exclamation mark you mentioned. I'm still left baffled since your clue about the shift cipher has left me (pardon the pun) clueless.

I'll let others decide what they would like to see or not with the ciphers, though Vigenère ciphers are, in my opinion, the next level of difficulty past simple shift ciphers though providing us the keyword length, making it no more than a fifth the length of the actual message (and preferably no more than 5 letters long, consider that a Vigenère cipher with a keyword length of 5 could take as much as 456976 times as long as a simple shift cipher to decipher if trying to brute force it), and providing spaces would probably simplify the cipher enough to make it not impossible.

Vigenère cipher description

Try this one on for size and see if you agree.

Myy pheaik r pmzvhikv wmiyyv bj jvhgivmzirtcfc mf cxl bycpflh myy itjcik zn ml ki gkrwo.

Keyword length = 4

Keep in mind that at its root, a Vigenère cipher with a keyword length of 4 is essentially 4 interwoven shift ciphers. If you setup a program to compute the combinations of shifts, there are 456,976 possible combinations total making a brute force attack, without an automated program, a very tedious one, or ridiculously time consuming. Assuming you took only 1 second to run a combination and 1 more second to confirm/reject the resulting plaintext, you would take an average of 5 days to decipher my code using brute force, assuming a totally random selection of shifts (including cancellation of shift combinations that don't result in a logical plaintext).

~Robert

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Re: Background Noise - OOC Boards

---. means ! in Morse code, that's the exclamation mark I was talking about. I have been making a frightful muck of it all I'm afraid, I'll make sure 1) the message is left untouched, 2) to re-recheck next time and 3) to not confuse things too much. And the shift cipher comment was actually not a hint but a heads-up - I will be making some kind of shift cipher next. Pardon, I might have misunderstood, but was there one message you haven't cracked yet? Or did you just mean that my "clue" seemed irrelevant to the cipher (which you're right about)?

I was actually thinking about a variation of a Viegenère cipher that might be a bit easier, but then again, it might not. I'll try to keep it as humane as possible. The spaces really do make a difference, don't they?
And there's not much I can disagree with, as it's what your keyword says it is. This is fun! Maybe I'm in the wrong business after all...

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Re: Background Noise - OOC Boards

^^^ Kudos to you sir for cracking the cipher! Now it's not a true Vigenère cipher if the keyword isn't an actual word, but if one avoided using a real word it would make cracking the cipher slightly more difficult (how much is on a case-by-case basis depending largely on the cipher itself).

And yeah in your original morse code you posted before you changed it 3 minutes later (still surprised I happened to view it in that 3 minute gap) there was no ! which was where I was confused when you mentioned the ! because I kept the page up with the old morse code to work on it some more.

And I didn't mean that your clue was irrelevant but that it in no way helped me figure out how to crack the cipher.



My favorite one I ever did was a substitution cipher that appeared on my final exam for Cryptography that I attacked using English letter frequencies. The decoded message was: "I dreamed I was eating a giant marshmallow and when I woke up my pillow was gone" - had a good, albeit quiet laugh to myself when I broke the code. "Marshmallow" really confused the heck out of me the whole time, I had to force myself to ignore the word b/c of how odd it looked encoded - had a tough time believing there was a word with those sorts of letter variations and patterns.

~Robert

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Re: Background Noise - OOC Boards

Rock on with the cipher stuff, just please keep your GM & SL informed because I know I am too mentally frazzled to keep up with encryptions. Liking it though.

-Kevin

Re: Background Noise - OOC Boards

No worries, I'd never encrypt something one needs to read. I see it more like the codex entries in Mass Effect or lore in Dragon Age.

EDIT: And congratulations on your new home, hope it'll turn out splendidly!

Last edited by Michael Aker (2012-03-21 15:35:19)

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Re: Background Noise - OOC Boards

Likewise, Kevin! Glad to have you back and I really hope the unpacking and decorating goes smoothly.

Ash

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Re: Background Noise - OOC Boards

By the way, now Danny's been allowed a golf cart, Alex is going to push for a quad bike.

Ash

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Re: Background Noise - OOC Boards

Alex is gonna get pushed back... tongue

Re: Background Noise - OOC Boards

For a free lapdance for Scarlet, personal service? Anytime. :-p

Ash

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Re: Background Noise - OOC Boards

Hi Kevin,



I've sent you a private message concerning a possible crossplay between Greenleaf Skyplex and the Odyssey. Please let me know what you think.



Mischa, CO of the Odyssey

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Re: Background Noise - OOC Boards

Ash Leighton Plom wrote:

By the way, now Danny's been allowed a golf cart, Alex is going to push for a quad bike.

Ash

Somehow I doubt non-electric powered vehicles would be allowed "indoors".

- Silent

Re: Background Noise - OOC Boards

What about an electric-powered quadbike? This is getting less cool by the minute, mind you.

Ash

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Re: Background Noise - OOC Boards

Good point Silent. The Green part of our name is certainly going to frown on that.
-Kevin

Re: Background Noise - OOC Boards

A renewably powered quadbike that emits no exhaust? Runs on water, or something? But billows small clouds of totally not-noxious fumes just for visual effect? ;-)

Ash

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Re: Background Noise - OOC Boards

Ash Leighton Plom wrote:

A renewably powered quadbike that emits no exhaust? Runs on water, or something? But billows small clouds of totally not-noxious fumes just for visual effect? ;-)

Ash

Sure. :-)

Silent

Re: Background Noise - OOC Boards

Danny's golf cart runs on hamster powered wheels. Shhhh......

~Robert

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Re: Background Noise - OOC Boards

I'll be posting as Lizzy Lusko on Greenleaf until she joins up with the crew of Odyssey. Probably going to have her arrive at the Tenzing Momo Spa and Hotel accompanied by an escort from Maczarek Security if that's agreeable to all?

Edit: I figure she will have been on Greenleaf for a time already, possibly doing minor performances and sitting at a booth in a music store for a signing? Just throwing ideas out there, if anyone thinks of something they wanted her to be doing while there just run it past me and I'm sure we can work it in. I imagine the crew from Odyssey won't be staying long enough for her to do any other performances or events...

~Robert

Last edited by RLongtin (2012-03-26 14:05:40)

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Re: Background Noise - OOC Boards

Sure, that's fine.

Silent

PS It's Maczarek Security, not Securities. We have nothing to do with banking...

Re: Background Noise - OOC Boards

Sorry, I work in financial advising - I have scores of businesses we work with that end in "Securities", it's a struggle every time I post about Maczarek Security not to pluralize the word.  tongue

And Securities is typically mutual funds for us which pretty much never has anything to do with banking either.  tongue

~Robert

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