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Handmade Encryption Challenge
Pike writes: "Amateur cryptographers may wish to get out their pens, calculators and scratch paper to take a shot at this short encryption challenge. Solve it, get a $25 gift certificate from thinkgeek. It's pretty hard though, so good luck." But since this isn't wartime, there is at least the stub of the plaintext to check against.
I'd like to get a look at the problem, but it looks like it will have to wait for an hour until the site recovers from being slash-dotted.
An encryption method that can actually be encoded by hand isn't too terribly useful in this day and age of hundred plus bit encryption. Any code complex enough to actually hold up to computer analysis is likely to take too long to generate with pen and paper to do any good. However, it might be possible to change some of the word in a message ("4or" for "for", "l8" for "late", etc, or even word substitution), before using an encoding scheme to make an attempt to break by computer useless. Interesting problem.
to!p! ue osle are n
Strong Cryptography May be Easier Than It Looks
In conjunction with geeky.org, here is JIPW's first cryptographic challenge; probably the last. I actually doubt anyone will be able to solve this, barring visitors from the NSA. In fact, if you can solve it and be the first to send an email to contest@geeky.org with the full decrypted message, I'll give you a $25 gift certificate at thinkgeek.com, and a good dose of general recognition and fame on this site of course.
For a discussion about this and other crypto puzzles, see the story on geeky.org.
Getting you started
If the Amish did cryptography, this is what it would look like; nothing was used to create this code but a pen and spiral-bound notebook. No computer tricks or supremely advanced algorithms. It is very tricky however. Here are a few parameters and guidelines:
The plaintext is hidden in the encoded section below begins with "the message is" (without quotes). This allows you to know when you've solved the puzzle.
The ciphertext begins and ends with clearly defined markers which are not part of the ciphertext. The rest of this page and this website provide no clue to the solution.
If by some miracle you do it, send an email to contest@geeky.org with the full decrypted message in it.
It's really hard. Harder than it looks. Be warned.
-----CIPHERTEXT BEGIN-----
From: The House at Outspar Ave
[image]
"Sirs and Ladies, we regret to explain by means of our seven couriers, commissioned in the fall of the thirteenth year ago how that our chicken house, killing its quixotic jouster -- in fact the boxer and jouster combined -- has made us reexamine our feelings on the ghastly meanings and other sundry implications. Now that the hedonistic quantities and kilometers of really red staple studded tracks have been and will be made subject to judicial committees and kin, they will probably seek to march the crooked gaffers out of hill country. To us, regulations are all much too far from common people. For example, killjoy laws about jousters counteract the will of the vulgar people. The key to special gun enhanced treatment tells some undisciplined underlings where to go and who understands. Should we let the puny minority override the nation? If not, undulate. Research for hairiness is no priority. As for us (yes, sounds zany), most won't gulp these incredible sacks of stuff many of the lawyers decided to let print in sans-serif. On the jelly front, the Olson brand that aspirates in very damp conditions was yanked because of kryptonite concerns. The notice that was on it was quizzical. If they quit, I say every big Crimean fool or other wag should have bitten their own can. They nixed our yew nativity, in spite of Geneva."
-----CIPHERTEXT END-----
There you have it. Expect to see updates to this page as participation warrants.
- JD
Seriously, though. I'd agree that it's just another kick in the teeth every time Slashdot slips a little more in the commercial realm. I guess if they're not even going to pretend to be unbiased, I can deal with it. Still, it feels like we're watching a sell-out in progress, and it's sad.
----
Every year during my review, I just pray the words "slashdot.org" aren't mentioned.
I've been trying to design a strong hand cipher myself, though I've set my goals rather higher than this guy. My current proposal is http://www.cluefactory.org.uk/paul/mirdek/ . If you've seen Schneier's Solitaire, you're familiar with the idea.
--
Xenu loves you!
Try http://www.cluefactory.org.uk/paul/crypto/mirdek/. Bugger, I tried to cancel but too late!
--
Xenu loves you!
Not quite. An a and a d disappear from aadstro. His username is lenigan and mail system is
astro uiuc edu.
There's another fellow who rot13s his address as well as having a word to subtract, that one is a little trickier.
Ooh, a sarcasm detector. Oh, that's a real useful invention.
A code doesn't have anything to do with what the units are, they're just frequently words. A code is a code when you've got a big mapping instead of an algorith you apply.
With the mapping:
bird = bomb
cat = house
The phrase:
put the bird in the house
has been encoded rather than enciphered, but the difference lies in the fact that the key is a pattern less mapping instead of a system that's applied.
If you took a sentence, and replaced each word with its antonym you'd have a subsititution cipher rather than a code, even those your units are words.
A mono-alphabetic substibution cipher w/ a "patternless" mapping (ex: not shift, etc.) is both code and cipher.
The secret message is:
Buy more Ovaltine
Help cure AIDS, cancer, and more. Donate your unused computer time to worldcommunitygrid.org. Join Team Slashdot!
The image has to be involved. It's a heraldic blazon of some sort. Now we just need somebody who knows their heraldic terms to tell us how to describe that blazon and we can go from there.
Anyone? Know their heraldic terms? How about alt.heraldry (IIRC)?
Droit devant soi on ne peut pas aller bien loin...
Droit devant soi on ne peut pas aller bien loin...
Straight ahead of him, nobody can go very far... -- Le P
Whatever happened to the Edgar Allan Poe encryption challenge posted here on Slashdot about two months ago? Were any Slashdot readers still working on it? While both are interesting cryptographic challenges, I think the Poe challenge has more historical significance due to Poe's stature as one of the greatest literary minds of the 19th century and should be worked on by some talented /. readers.
So every time slashdot posts something that relates to a commercial entity, it's automatically being biased and is only out to make a quick buck? What do you suggest they do? Never list news if it involves an entity related to slashdot financially? I think this is a cool story. It's just something fun to do if you're bored one afternoon. Stop trying to read so much into every little item that passes slashdot's front page. There are plenty of other things to bitch about if you feel like whining.
That's not funny. I know.. but it's still +4 funny. If you don't like the joke, look at it this way - the really amusing thing is that the moderators thought it was funny.
I don't understand... what does this "500 internal server error" mean. Is it some kind of code? I hit reload and now it says "Connection timed out." Time? Maybe you need to keep reloading it because the code changes each time you reload it. And what the hell is a "slashdot effect"? If you ask me, this "slashdot" thing is the real enigma.. Commander Taco? Why would you want to command a legion of tacos? Tacos, Time, 500.. it's all starting to make sense... the area 51 pictures.. they must be XOR'd encryption.. I can use this thinkgeek thing to decode the secret to area 51 and free the legions of tacos for my commander! YES! I SOLVED IT!
If you're going to use PGP to distribute your one time pad, you might as well just use PGP to exchange all your messages. Afterall, any system is only as strong as it's weakest link, so no matter how random the pad is, once it's figured out that's what you're doing, attacks would turn to PGP... Note that 4096 bit RSA is plenty strong in theory right now, but if you're confident enought to use it to distribute your keys, you might as well use it to distribute your messages as well.
So far as using a book as your key... I'd think that wouldn't be the wisest decision... A book is hardly random data. Not that I could break your code, or write a program that could, but i'm sure if it was at all important enough that someone with the resources wanted to figure out what you were talking about, they could.
It translates to:
"The message is not here."
That's great steganography if I've ever seen it!
I find it more interesting that our government gives subsidies to the tabacco companies, then sues their asses. Go figure.
What?
Real encryption has to assume that the bad guys already know the algorithm.
My blog: http://www.seebs.net/log/ --- My iPhone/iPad app: http://www.seebs.net/seebsfrac/
At least, it COULD be more secure. If there's a 'trick' to this, one traitor could let the trick slip. Then where are you?
If it's a fully reusable effect not involving one-time pads, then observing several messages would probable clue people in on the general nature of the encryption.
Now, if you will accept that fact, then allowing any crypto person in the world scrutinize the method and pass comment could lead to greater strength for the algo...
So in theory, an open development model can help in crypto, past a certain point. Look at various public key encryption systems on the market now: As best as is known from massive scrutiny, they are still impossible to break outside of brute force. Yet their inner workings are hardly a secret...they are strong for reasons other than obscurity.
You did ask...
The code-talkers were brought into the war because the US army needed a way for troops in combat to communicate over the radio, without the japanese understanding them. It was only used for speech transmissions in combat situations. It was never a written cipher.
This is the only reason it was never broken. Had it been written out and transmitted in morse code, as most machine ciphers were, it would have been broken very quickly. The nature of spoken navajo as being very alien to the japanese language was the only thing preventing them from interpreting it. Add to that the fact that it was spoken in high-stress combat situations by men who were probably trying to take cover while yelling responses into a radio, and you can see why the japanese never broke it.
In point of fact, the US navy used one-time pads for all of it's critically secret transmissions. These are provably unbreakable. They are however, inconvenient. Machine ciphers were used for less critical communication.
Code-talkers were used because rapid communication was required. It had nothing to do with the security of the navajo tongue. This is a misconception that is largely the fault of the semi-illiterate hacks at the X-Files.
It's the sample text that appears when you look at a TrueType font in the Finder!
Pope
Freedom is Slavery! Ignorance is Strength! Monopolies offer Choice!
It doesn't mean much now, it's built for the future.
It may well be encrypted too, but the message (encrypted or not) is also hidden by steganography: the thing doesn't look like an encrypted message. Which was probably the point.
My guess is is that it's stego'd into the jpg image. Hmm, maybe not, that'd require a bit more than pen and notebook unless one was really a glutton for punishment. So it's likely in the text. But $25 isn't enough to persuade me to spend much more time on it.
-- Alastair
As far as I can make out the aillilu puilliliu is just a rhyming-folky thing. The closes to puilliliu that I know of is a nasty Hibernicization of the english "pool". Ta = present tense of the verb "to be". an = the thus, "the goat is mad" if the previous translation is to be believed. I can't verify that buille is mad. However "ar" = on literally. So "poc ar buille" must be an idomatic expression.
So my town was on the news the other day because of a law passed saying cats have to be on leashes. The news in Philadelphia runs a story about it, and interviews this woman with one nasty blacktooth who has about 20 cats. The point? For some reason it is inevitable that the idiots will have the loudest mouth. That is also evident here, where we find people pointing out such "obvious commercialism" as somebody COMPLETELY INDEPENDENT of Andover.net and Slashdot getting their news posted because they ran a contest and were nice enough to buy a $25 gift certificate from Thinkgeek. You really think timothy gave a rats-posterior about the fact Thinkgeek was in there? If you do, I have a great e-mail where Bill Gates will give you money for forwarding it along. Seriously. It works.
Point is, why don't you people who constantly criticize Slashdot and it's authors create your own site, post your own news, and get your own userbase. Then, when you've done that, you can whine about whatever you wish.
Later,
-Jeff
...all the "security though obscurity is a bad idea" people to tell us how much more secure this message would be if the guy had published a description of how he encrypted it?
DrLunch.com The site that tells you what's for lunch!
There is a one hundred percent secure criptography called one time tab that consists in choosing a random key of the size of the message you want to transmit. If you can transmit the key securly you can then simply add the key to the message and only the person who has the key can unencript the message (even if an atacker knows part of the message). Without any knowledge of the keysize or the algorithm this could be easely be a one time pad of some sort.
--
"take the red pill and you stay in wonderland and I'll show you how deep the rabitt hole goes"
[]'s Victor Bogado da Silva Lins
^[:wq
The caption on the crest of arms is in Celtic. It appears to mean The Mad Billy Goat in English. It's perfectly possible that not only is the message encrypted, but the plaintext is in Celtic. According to the above link, An Poc ar Buile is the title of a song. As a guess, the plaintext could be the lyrics to this song.
It seems quite plain that "jouster" refers to the star of David (jouster-->'Jew star'), and the boxer refers to the yellow box in the corner. Clearly the two are supposed to be "combined", but how is not clear. Perhaps the "sundry" aspect of the two refers to their yellowness (sundry-->sunny).
If I had more time, I'd proceed on the theory that the passage is just full of really bad puns based on the words' phonetic sounds.
"If one is really a superior person, the fact is likely to leak out without too much assistance" -- John Andrew Holmes
An and ar are common in gaelic languages, typically being an article (ie, "the"), a preposition ("in") or a pronoun of some sort, depending on the language. Buile means "frenzy" in Irish, but I could not find poc in Irish, although I did find pog, which means "kiss". An Old Irish form of pog is poc.
In Scots Gaelic, poc means "put into the pocket," according to the online dictionary I used. I could not find buile in Scots Gaelic, though. My best guess is that the caption is in a form of Irish Gaelic. Possible translations I can come up with from the meanings of the individual words are:
None of these appear to make much sense, but they don't have to make sense. Of course, this could be a deception meant to lead me off track.
Xanadu conifers crush zeolite quietly in the mist.
Yeah, but which is gonna raise a red flag at the NSA faster: A message encrypted with patterns similar to those used in the latest greatest encryption, or a letter from Bob about how his mommy didn't love him enough?
Well Netscape's lame for some reason.... You can highlight a selection, go to File->Print, and the radio button for "Print Selection" instead of the whole document is SHADED OUT! How stupid. IE can... Opera can... But Netscape shows you the operation is there and then tells you that you can't use it. It's like the "End Task" button on 98's task manager. It's there, but it really doesn't do what it's supposed to.
Interesting point...brute force computing just isn't practical in many situations, unless, as I said, you are the NSA and live 10 years ahead of the rest of the science/mathematics world.
Now I'm really curious to see if anyone figures this out, because if no one does, it would mean that (gasp!) criminals still have easy ways of communicating securely over the net without using government-restricted encryption techniques. On the other hand, I've made it tough enough that I'll be really surprised if anyone solves it.
I might even jack up the reward if this survives an attack by the slashdot crowd...
-JD
I honestly didn't know thinkgeek was an andover site. I wanted to throw in some kind of prize, but I didn't want to just hand out some cash. I thought about books, or a case of penguin peppermints, but a friend suggested a gift certificate and it immediately made sense to me. I picked thinkgeek because it had a nice range of products that the potential winner would like to choose from. I supposeI could have chosen copyleft.net too.
On a side note, it's kind of funny to see people saying "I'd never do this for a mere $25". I know people who solve puzzles like this in the newspaper with absolutely no incentive. I figured the prize and the (relatively) small recognition would just be frosting on the cake.
-JD
... but then I ran out of absinthe.
Gamingmuseum.com: Give your 3D accelerator a rest.
the lyrics to the song mentioned in the crest can be found here . Now if only someone could translate them for us:)
Call them what you wish, but they all contain a secret message... Check out http://web.mit.edu/puzzle/www/
BTW- These puzzles were actually solved (by multiple independant groups) in just a few days. Too bad all the old ones aren't still online.
criminals still have easy ways of communicating securely over the net without using government-restricted encryption techniques.
OK, say you're using this in some country like China. Do you really think the cops are not going to come knock on your door and take you away, just because you've been using a paper-and-pencil cipher and not 3DES? Yeah, right. If they can't break it, they'll come get it out of you personally. "Secure communication" and "not government restricted" are diametrcally opposite in such countries, no matter what method is used.
And if you're not in such a crappy country, you have easy access to SSH, PGP/GnuPG, OpenSSL (well except the US because of the damned RSA patent), S/MIME clients, etc, etc. Not to mention the dozens of crypto libraries floating around. So there is no reason to use such a slow and relativley insecure method.
Yeah, but which is gonna raise a red flag at the NSA faster: A message encrypted with patterns similar to those used in the latest greatest encryption, or a letter from Bob about how his mommy didn't love him enough?
Well then you don't want crypto, you want stego. Different (though related).
Does anyone else find it amusing that AOL owns Netscape yet uses IE in their software?
Perhaps that because IE5 is light years ahead of Netscape 4.7 in every conceivable way, except for the lack of OS compatibility. And since AOL does not care about that *right now*, they have to choose the superior browser. The Mozilla project will change that, and rumor (not to mention logic) has it the next version of AOL will be be based on Netscape 6, and an upcoming set-top box will be based on Linux.
-rt-
-rt-
** Evil Canadians are taking over the world. Learn about the conspiracy
If the method that you used to encrypt the message were know would it be easier to attack? It this cryptography by obscurity? The reason that I ask is that it's quite easy to encrypt something with a relativly simple algorithm if no one has a chance of finding out what the algorithm is.
For example if the shapes in the picture above the text were a key to the letters needed to find the message. That would only be secure if no one else could find out how you encrypted your message.
Still it's a nice challange thanks.
Environmentalists are their own worst enemy. ~tricklenews.com
You don't need to send 99% of garbage. One time pad (true one time pad, the type you are describing) is fully unvolnurable to cyphertext only attacks, and to attacks in which you know some of the plaintext. This is, of course, the information source is 100% random.
You can come close enough by encrypting with almost random data, but then it's more a question of "how good is your pseudo random generator", rather than "how good is one time pad".
One more note - with one time pad, the key length is identical to the plaintext length, making it a not very strong encryption in terms of key length/encryption strength ratios. Nothing close to DES/3DES/Blowfish/Serpent etc.
In fact, it is so weak that if the key length is very short (say, square root of the plaintext, which is still very long), an english text is vulneruble to cyphertext only attacks (which are much less likely with DES, even if you don't use CBC).
Shachar.
Thad
Thad
This is by no means the kind of crypto the /. audience is interested in,
Wow, am I glad that there's finally someone who can speak for the entire slashdot audience. Because, as we all know, we're all exactly the same kind of person, and all of us have the same opinion of everything.
- In Capitalist America, law violates YOU!
To email me, subtract my nick from my email address, starting with the second character. (hint: adto.uiuc.edu is wrong)
Dude, you should give US$ 25,00 to the guy who discover your e-mail address.
--
This space left intentionally blank.
Well, the paragraph doesn't even make sense. Makes me think it has to do with words in the sentance, eg ever 3 letters or whatnot and then rot13 it or some weird crap. It looks too damn hard to be able to break the code. This is when making a beowulf cluster WON'T work! doh! hehe. Or maybe the code has to do with the words in there, eg happy, sad, secure, etc. This is really a stumper...
The good thing is that there are many other vegetarian sources for gelatin, such as agar agar.
Well, I'm not a master cryptanalyst by any stretch of the imagination. At first glance though, this looks more like a code than a cipher; that is, I think that each word and/or sentence are the "units" of the "cryptography" rather than each character.
On the other hand, they may be employing steganography, and or some algorithim in which every Nth character/letter is skipped. If I was really interested in solving this, a perl script that could analyze all possible skipping patterns would probably be my first attempt. But neither fame nor $25 bucks at ThinkGeek are enough motivation to zorch my finals. Good luck to the rest of you.
To email me,subtract my nick from my email address, starting with the second character. (hint: adto.uiuc.edu is wrong)
Well, the things in the paper are simple substitution ciphers that can be decrypted through frequency analysis quite easily. It's not much different from an ordinary crossword puzzle. This is the ciphertext with an unknown encryption algorithm, somewhat akin to a crossword puzzle without any clues.
--It burns! --It's loaded with wasabi.
Trolls for $0.99! Everything must go!
I may be an optimist, but I think thay would obviously have.
(My use of Linux being another side effect of hideous optimism.)
First, let me make a note to all those who rushed to post "Andover's influence" posts. You are not simply mistaken; you are sorely mistaken. This little challenge is by "JIPW", which is, of course (as stated on the top of the page), "Joel's Improved Personal Website". The fact that Joel apparently thought that a $25 gift certificate to thinkgeek would be nice is beside the point (I'd imagine he'd spring for copyleft.net is you were offended by thinkgeek).
Slashdot's posting of the token prize is irrelevant. $25 will not make or break Andover. They obviously thought it was a neat little challenge to anyone who is interested in such mind games, and having a prize is nice but unnecessary. Okay, now that's done. Real post follows:
It seems to me that the point "Joel" is trying to get across is that even today in the age of high encryption, and old fashioned handwritten code can be quite useful. Remember the "code-talkers" of World War II. The risk of the Allies having their codes broken was too great. Their were encryption schemes (Enigma, anyone, even though it was the enemy's), but since the fate of much of the world was at stake, an ingenious plan was created. They used members of the Navaho tribe to develop a secret, unbreakable code.
This step away from the technological methods of the day proved to be not only as secure as existing technologies, but it was never broken. The technological way may currently be the easiest, but their is always room for ingenuity.
One last example: have you ever been talking to a friend and understood each other perfectly, but nobody around had any idea what it all meant? All the script kiddies in all the world might not figure that one out (but you might want to mix technology and old-fashioned ingenuity, considering you might have the NSA, corporations, script kiddies, your old girlfriend, three lawyers, and Metallica after your communications).
If this post is redundant by the time it shows up, you have my apologies. I just figured I'd think first and post later. No offense, anyone, okay?
You could use a one time pad... simply post/pgp/hand deliver (this is the best option) a book, or a large file of random (whatever) characters...
then when you want to email someone something secret, just xor each char of your plaintext with each char of the file you gave them, and voila... an effectively random stream, that even brute force would have trouble with...for instance if you made sure the first 99% of your message was junk in the first place, so even a successful decrypt looked like rubbish.
If it can be cracked from just one sample then the algo is really weak.
But there are weak algorithms which are difficult to crack if you have only one sample and not told what the algorithm is.
Even I could come up with an algorithm that's uncrackable with only a single sample.
In effect it's similar to the case of a one time pad - except that it's more of a one time algorithm. If you use a different algorithm for each kilobyte, people are going to have serious difficulty cracking your stuff.
In order for a proper evaluation/examination there should be more samples and the algorithm should be provided as well.
Cheerio,
Link.
It's partly made from animal fat, specifically that scraped from the inside of the hooves of animals who have them -- usually horses. (So marshmallows, Jell-O, and other gelatinous foods aren't vegetarian, though seaweed jello is rather good.)
personal site: journal.amanita.net
lesbian se
I'd be interrested where I could find a script or program to crack codes like this. Maybe I should look in obvious places, though. Like in "Spys Like Us" where they crack a code with a Lucky Charms box :-)! Seriously, is there any type of a Swiss Army Knife crypto breaker (any major platform will work)?
My email is real.
Many modern encryption schemes use a repeated pattern of bit shifting and XORing in what are known as mixing rounds. The output from round n is the input for round n+1. I've attempted to do something similar to this message, in hopes of stumbling across the solution. This is what I got using the Babelfish decryption algorithm (English to spanish to english to german to english to /.) Of: The house in the avenue of Outspar " Mr. and the ladies, we were sad to explain by means of our seven couriers do assigned in the case of décimotercerjahr, how this our house of the chicken to terminate its quixotic more jouster -- actually the boxer and the combined more jouster -- that reexaminamos into the meaning horrorosos and in other different implications did our feelings. Now, those the quantities and the kilometers, which are of tachonadas hedonistic, really red staple seeks out, was and in opinion of the committees was done and to the Gerichtskinships, probably tries it, to border gaffers rotated country of the hill. To us the regulations are much also far all from city. E.G. the laws, which are on jousters killjoy, oppose the will of the vulgaeren people. The key to the increased processing special weapon says to unite underlings, which where one are undisciplined, go and who understands. It must we leaves to the minority puny replaces the nation? If No., undulate. The investigation for pilosidad is not no priority. Up to us (, the tones zany), the majority swallows not saliva these unbelievable coats of the material, which leaves many of the determined attorneys to the printing in sans serif. In the front side of the jelly, the trade name was situated kryptonite deleted by Olson, which strives into that very damp conditions, at the principal occupations of. WARNING, which was in their, was quizzical. If they leave, one to possess it knows legend I that each large crimeoidiot or a menee seins must have bitten other one. Nixed ours nativity the disk, despite Geneva ", This is, I'm sure, the right answer, as babelfish translations are always perfect. ;)
Moreover, if the message is not something like "this is the message aeroigb ekrgjlk jpojp jpojerjgkrj rjpgorjij ...", the encryption method is even more useless, since it in some way must be related to the message been send, as obviously takes more things into account than what characters/symbols are included in the message.
This is by no means the kind of crypto the /. audience is interested in, and I doubt this $25-to-solve-a-close-to-impossible-crypto-contest belongs anywhere at all but on some kind of puzzel-page.
That said, I should make clear that I understand that the author did not intend to make this the new RSA, and that some /.ers may find this kind of stuff interesting.
But then again, wednesday just happens to be my whining day of the week.
Things are more like they are now than they ever were before. - Dwight D. Eisenhower
Does anyone else find it amusing that AOL owns Netscape yet uses IE in their software? Or that the U.S. govt is the largest customer of Microsoft?
No, Thursday's out. How about never - is never good for you?
Who the heck wants to put a bomb in a cat?
This post is well thought out and accurate. Therefore, it cannot reflect the opinions of the SlashDot moderators.
I wonder if all these l33t cod3rs parading around slashdot will solve the puzzle.
probably not.
-- Stalkers Should be Shot in the Head
why can't he just use his photographic memory?
-- Stalkers Should be Shot in the Head
Why don't you just use a Polaroid camera?