Questions tagged [cipher]
A cipher is a simple method of modifying messages to make them unreadable except to readers who know the key. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polygraphic ciphers such as Playfair and Foursquare and numerical ciphers such as Polybius and Nihilist. Cipher puzzles sometimes make use of data encodings like Morse, Binary, or Base64.
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Snailfence: Deciphering puzzle
The following text describes the method used to encipher it.
Ssatnntloe-lree-itgaiima-t-odto-tl,hchaenisoa-a-oitnpsnefenf-p-coigtlxilon--letdnrhitC-iar-ae-reamralcppi-pttfp-dpt-ehrneWeaet-oet-nscewee-...
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Lyrics from a P!nk Song?
The subject line is a clue, but you’ll need to find where. Additional clue: look up. Or down, maybe.
I have to admit the answer isn’t very rewarding. Sorry about that; it’s more a proof of concept ...
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What next step could I take to solve the Dec. 4 cryptoquote from the Wisconsin State Journal?
So as you might or might not know, I enjoy solving cryptoquotes (also known as cryptograms), and sometimes get stuck on them. Here is today's cryptoquote from the Wisconsin State Journal:
...
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Decode the ancient prophecy
A team of archaeologists has discovered an ancient clay tablet. They understand the script it is written in, and have transliterated it to the Latin alphabet, but they do not understand the language. ...
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How to solve the Nov. 29 cryptoquote in the Wisconsin State Journal?
apparently the cryptogram tag is a tag synonym for cipher so I guess that's what I'm using
So recently I have been trying to get back into solving the cryptoquotes because I used to enjoy doing them. ...
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The FBI needs your help with this Zodiac killer message
During a recent thorough cleanup round at the main building of the San Fransisco Chronicle, an employee found a piece of paper stuck behind an archive closet in one of the many archive rooms.
Her ...
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'SILVER' -> ‘LESIRU' and 'GOLDEN' -> 'LEGOND', so 'NATURE' -> what?
I found this problem in an Indian Highschool Reasoning Olympiad. (image)
If 'SILVER' is coded as 'LESIRU' and 'GOLDEN' is coded as 'LEGOND', then in the same code language how 'NATURE' will be coded ...
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In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code?
In a certain code 'NATIONAL' is written as 'JUBOKZMN'. How is 'ELECTION' written in that code?
(A) FMFDSHNM
(B) DFMFMNHS
(C) DMFMFHNS
(D) MFDFHSMN
I really tried many basic methods using positional ...
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My first attempt at creating a self-referential cipher
I recently made a self referential cipher (meaning that the key is the same as what is being decoded) a while back and was planning on putting it on here after making the cipher a bit more difficult. ...
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the flute section keeps passing notes
(_ˇ෴ˇ)_⟋ 🎵🎶
(づ🪈◕‿◕ )づ日 ٩(◕‿◕)۶🪈
The band director is tired of the flutes passing notes in class, but he can't tell what the notes say. Here is one of the messages.
2 10 - 1 2 3 10 - 1 2 10 - 1 ...
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phonetic encryption [closed]
0x09f 6 Wilhelm Paula 67dsa7 Friedrich Josef Gustav Toni Caeser Dora Gustav Oh762d.
and
Joseph 78sada Paula Ludwig Friedrich Joseph 67das 7d Tony 87h677 Dora Gustav h7f ehfs. Ox 786 bds7fds Paula ...
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A fun and simple Nonogram... ...with a cipher
Goal of this puzzle: Find the hidden message in this Nonogram that I created.
The puzzle:
play online
Hint:
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see/// ,sm. upi eo;; gohitr yjod piy/
see/// ,sm. upi eo;; gohitr yjod piy/
Did you solve it? If so, post your answer below. Go solve it! It is really easy. It is a common secret language. (Not really secret though.)
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A Squared Cipher
While looking for squares, I stumbled across these numbers, which seemed to form a message:
...
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A 10x9 Hidato puzzle with a cipher
rot18(A se zgfwkldq jwsddq tsv sl ujwslafy hmrrdwk kg zghwxmddq sl kgew hgafl A sulmsddq kzgo aehjgnwewfl dgd)
You might note that something is off about the following Hidato puzzle. Well, I guess in ...
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Finding solution from reading computer language puzzle [closed]
How to improve this puzzle?
The task is to find a result, like a number from 1 to 10 from reading and understanding code. For example:
...
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Decipher this sentence, written in an original cipher
What does this sentence say? What manner of speech does it represent?
I can safely declare that this cipher is entirely novel: Understanding this writing system does not depend on knowing any ...
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The Messenger's Riddle
Two lovers, separated by war, devised a secret code to communicate. The code consisted of a 9x9 grid, in which each cell contained a letter. The letters spelled out a hidden message when read starting ...
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help? weird bug [closed]
hey stackoverflowers im very new to html so if one of you could give me a pointer on what went wrong here that would be really helpful. im trying to make an online⠀order⠀site but something happened ...
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But do puzzles really need visible or even highlitable text to be a good puzzle?
$\color{white}{fillertextsigh}$
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this puzzle is based
This message is a basic numeric substitution cipher. The key is the standard, regular alphabet in the correct order (ABC...XYZ).
Here is the message:
3 16 15 7 20 1 22 23 13 1 22 10 16 15 21 27 16 23 ...
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Animal Farm and the Porcine Penitentiary
It's a disaster at the farm!
Overnight, some nefarious individual has stolen an animal. You're not sure which animal, but you're sure that when you went to bed there were ten, and now there are only ...
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The multi-layered multi-layered puzzle competition Part 1/11: February 16th, 2013
This is Part 1 of The multi-layered multi-layered puzzle competition, a 11 part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end
Note: This is entirely a ...
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My smol boi puzzle! :3
It should be noted that all this puzzle intends to do is give the second half of the answer to my first puzzle, while being a puzzle itself. Other than that, this is just your normal smol boi puzzle :...
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A simple and quite fun cipher: Redux
Previous ungood creation here
Attribution to: Me :)
Also sorry for all of the rot13("zrzrfcrnx") per se. I'm just trying to include a bit of a "humor" element into my ciphers. :)
...
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A simple and quite fun cipher puzzle
Don't worry, this is my creation :)
Goal of this puzzle: Decrypt the puzzle to find out what the secret (final) message is. Each part of the puzzle depends on the previous part (except for the first)....
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a numerical headline
I picked up the English-language version of the popular tabloid Bild von Affen, and was surprised to see this headline. What does it mean?
1 69 39 64 13 71, 46 27 6 12 61 33 7 74 32 24 44 47 25 ...
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An anagrammed logic puzzle!
ot rleow utbrctsa aacpilt hwti
dioiatdn het ryuo
s-bcBPEFfJDfeFmksmPOkChDhrgBqjD-i---ffeNB
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A sudokey and 14 messages
This puzzle is part of the Monthly Topic Challenge #15: Multi Puzzle — two (or more) puzzles in one.
Remarks:
Feel free to post partial solutions.
This is a multi-puzzle: If you found the titular 14 ...
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Cheese from Denmark
You'll need "cheese from denmark" for this cipher puzzle.
Denmark
Portugal 1/2
France "hello"
?AI EBOM AEEDY EHT SEOU EPNHS TNHG OS EPNHS "F" AN AI SEBOM SSEHÆ AI ...
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The Mono-Quantum Condrum
You are presented with a locked box, and on its surface, you notice a sequence of peculiar symbols:
⌬ ⌅ ⊙ ⊡
Next to the symbols, there's an inscription:
...
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Good cipher with a "password"?
I'm starting to create a puzzle, but I'm going to need a cipher that will be impossible (or at least very difficult) to crack, but can be easily decoded with a key. I first looked at the one-time pad ...
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#TenderfootSpiral
Clues:
Two hikers on an incline arrow with numbers.
Hiker 1 says: 38.548493. Hiker 2 says: -105.998749.
Sequence: Hiker 17711 Hiker 0 377 0 144 1 10946 233 987 0 2584 6765 75025
Hiker = ...
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A Trivial Pursuit #07 (Geography 2/4): String Theory
This is part 7 of A Trivial Pursuit, a 25-part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end.
If
e*
t*
u*
v*
w*
x*
y*
is H...
What relevant (if ...
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Find the ciphering method 2
Link to the entire series.
The message:
3, 53, 48751, 9247757, 294914580539
The answer is a 13 letter word: UNDERSTANDING
Hint 1:
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Find the ciphering method using deciphered message
Link to the entire series.
Ciphered message:
...
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Decipher a long sequence of numbers
51699624576811268526783109824167925197245652924177251787241782538786302873119768312852668312686625268245686752824473216878253830287925175273039778250852831287672527245665263006725397251762529312811498
...
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An X x X Slitherlink related to X
This puzzle is part of the Monthly Topic Challenge #13: Variety Slitherlinks.
The final answer is a six letter word.
Prefer no partial answers.
penpa
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The End of the Desert Sauce
Transcript
Clues:
[map compass containing "19!"]
3336665555556669 84433 7777833255 777728822233 8666 77773333 944666 933 64444448 2233
+---+---+---+---+---+ +---+---+---+---+---+
| | 3 | 4 | 5 | ...
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6 types of puzzles I like
I like puzzles where you find out about something interesting.
Mike Wilks
I like image editing puzzles.
I like code puzzles, where the code is not that obvious.
Pakistan Dance Omega Beans Cricket ...
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This is a message encoded in a rather obscure foreign language. What language is it and what's the riddle's solution?
The following message contains a riddle written in an encrypted form of a rather obscure language lacking a literary standard that is rarely spoken today. What does it mean and what is the solution to ...
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Cryptogram or Anagram
Clues:
The answer is 7 characters
Answer can include the following characters: [a-zA-Z0-9]
Ideas:
I first used all characters adjacent to every capital letter and got: "rnaoihd", which ...
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Kidnapper? Some Spacing needed
Prologue
You are coming home from work, happy with your current coding progress (you are a coding and maths prodigy), but then you get kidnapped...
You wake up after some hours of sleep in the ...
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The Poem's in the Wires
Here's one I thought folks here might appreciate. It'll require a combination of codebreaking (or codefinding) and a tiny dab of cryptic mindset.
What poem is written below?
For bonus points, provide ...
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A historical cipher
You are born in the time of 100 BC. Now what?
gvcwndxphufrcshvrtfrnhwnircssynbntnwnnglcufnbgwrf
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Help a woman from ancient Rome find out how her husband is doing
Let's go back 2000 years. A woman named Valeria received a strange message from her husband Claudius who is a frumentarius.
The message:
...
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Relax, I’m Kidnapped! - Part 2
Part 1: Relax, I’m Kidnapped! - Part 1
You manage to solve the crossword, and you show your captor the answers. “Well, you solved it…but I’m not done yet. Go to my room,” he replies. He directs you to ...
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