Questions tagged [cipher]

A cipher is a simple method of modifying messages to make them unreadable, but still possible to recover. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polynomial ciphers such as Playfair, Foursquare, etc.

Filter by
Sorted by
Tagged with
9
votes
2answers
359 views

Just Another Cryptic Cryptic

Twenty-six cryptic clues -- each one a letter. Plug the letters into the cipher to get a final cryptic and a quiz question. Answer the question, and you've cracked the puzzle! Clues: Give money to ...
6
votes
1answer
139 views

5 steps answer is 3 digits plus decimal

3 digits plus decimals takes 5 steps has something to do with hex code as first step you only need a calculator and smarts
2
votes
6answers
205 views

Simple ways to encrypt a message

I am planning to organize a sort of treasure hunt and I would like to know some easy ways to encrypt a message. I'd say something in between Ceasar's Cipher -shift each letter of a word of a fixed ...
-1
votes
1answer
93 views

Please help with this cipher

💻Lets=13px go bois=13px 💻 Hint: 68 74 74 70 73 3a 2f 2f 70 61 73 74 65 62 69 6e 2e 63 6f 6d 2f 65 46 48 46 4b 52 33 4d
3
votes
1answer
244 views

An unknown Cryptogram

I would like to say : vyycd gow mcgr uuey
0
votes
2answers
208 views

Image riddle good luck

You will have to decode a secret word from this image: And then use a cipher to combine the word and decode the encoded message below Again, good luck! Encoded Message: Zeyd Iuhpchhpp
14
votes
1answer
326 views

An old inscription

A tribe that lived here centuries ago called the Rreiorclskl had been very mysterious until now: The only things known about them were that they liked poems, math and puzzles. However, very recently, ...
9
votes
1answer
211 views

The landing: part one (coded mystery)

You have just clambered out of bed when you hear a massive crash. The noise appeared to have come from your back garden. You peer out of your window and see a wooden box on the grass. While getting ...
1
vote
2answers
284 views

The Unsolvable Mystery

Imagine one day, out of nowhere, someone emails you a cipher. You can't solve it, so you post it online. You ask people what it means. But all they tell you is, "Your friend must be up to something ...
33
votes
1answer
1k views

A Morse Conundrum

Yesterday, I intercepted a message encoded in Morse code, but, because I was extremely tired, decided to wait until today to decode it to plain text. However, when I looked at the piece of paper I had ...
9
votes
5answers
249 views

What's for dessert?

Another puzzle, yay! What do I want for dessert? An element, a blue liquid you breathe. The end of a sentence. wgpz tzggjr wgvxf bmzzi mzy It's three til' 4, plus forty more. Hint:
1
vote
2answers
137 views

A Fun, Fantastic, Phonic Cipher!

An old friend of mine recently sent me an email. Being a linguist, he always finds creative (read: annoying) ways to use his words to baffle me. After about five minutes, I usually just give up. ...
6
votes
2answers
656 views

A Magical Cryptography Puzzle

The following is the first and second sentences of one of my favorite (and fairly popular) fantasy books encoded in a cipher I created a few years ago. I'm quite certain it's breakable, but hints/more ...
-3
votes
1answer
100 views

Trying to crack a code [closed]

I am trying this string set of puzzles. The last puzzle to do, began with 055 055 055 055 ...…040 056 055 055 055 055 which translated to: 77777(77777(877 …… 77(87777(87777 But I cannot work out ...
6
votes
3answers
316 views

How to Make Non-too-broad Cipher Puzzles?

// I'm not sure whether this is better to be asked here or on meta. Unfortunately, many people (or at least my friends) agree that puzzles are plainly just "random guessing" in a sense that they ...
4
votes
1answer
234 views

This picture has some hidden message. What is it?

This picture was uploaded for the Olympiads of Medicine, from Porto. While the answer might be in portuguese, I don't find it likely. I tried some Caesar Cyphers, I assumed the colours represented ...
0
votes
1answer
131 views

Need help to decipher this encrypted text

I am relatively new to deciphering texts and I have the following ciphertext: xbt ufp ekyzkikn dt nkojvhk? e ndmr jfo nggv du kwjt gun pjv. I tried Caesar Cipher but to no avail. It would be ...
7
votes
3answers
330 views

What's my favourite book?

I got a strange message from a friend a few minutes ago: You wanted to know what my favourite book was? See if you can work out the answer. I'll give you a clue: Saranac Lake \United Which ...
5
votes
1answer
116 views

PSE x Wiki x World: How can it be?

The following is a encoded first line from a Wikipedia page. Your task is to decipher it. Enjoy! 239#27#682 372#52#41#599#995 354 856 227#886#244#82#94 252#681 672#61#32#239#246#673-376-599#46#597 (...
10
votes
3answers
589 views

Where is the money?

When I was just a little kid my parents died in a terrible accident, and I was left alone in the world. When I reached the age of 18, I received an envelope with a letter that read the following: ...
4
votes
1answer
184 views

Alternating Audio Waves

Try solving this cipher from these strange memos: Memo 1 Welcome Comet, today's Thisbe plus Russell here! Memo 2 Reading outlaws loudness. Memo 3 Retro memo: Berlin today upheld voting ...
0
votes
0answers
151 views

Solve it… Uncover the mystery!

One of my friend, who is really too good with cyphers and puzzles challenged me to solve this one. I think it reveals a name, or date or some information with which he can surprise his friends. That's ...
5
votes
3answers
195 views

Same Riddle Different Answer: I am both lock and key - who am I?

NOTE: Though the body is identical to I am both lock and key - who am I?, a different answer is expected, and thus this is not a duplicate. Cyrnfr qb abg pybfr guvf dhrfgvba.Thanks! Enter! Small or ...
6
votes
3answers
509 views

My Grandpa's Box #1

My grandpa died last month. At the reading of his will, he left me a strange wooden box. A post-it-note on the side read "You were always good at puzzles." There was a number lock on the front that ...
6
votes
3answers
1k views

Is there a secret message in the first decimals of PI?

Is there a secret message encoded in the first decimals of $\pi$? Source: Vi Hart
6
votes
1answer
331 views

Crack Me 01 - Crypto Riddle

This is the encrypted message: xy}v"|y#xu|$|&a+&y}vsa*pppp*fprppp"prpp"upppzpqppp*"vptp|at~!*+p)~yr%"&t"&y}vsa* This is a riddle in parts, follow ...
3
votes
2answers
385 views

Puzzle hidden in Hannah Fry's Hello World

Hanna Fry announced today that she hid a puzzle in the cover of her book—via twitter The initial clue seems to be a binary encoding of some ASCII. I was hoping to start a thread towards finding a ...
4
votes
3answers
382 views

Who is John's favourite painter?

John being his usual self forgot the name of his favourite painter. He went to the Oracle for assistance but inadvertently walked in on her while she was busy eating pie. Angry at the interruption, ...
5
votes
2answers
268 views

Riddle Number Seven

Seems as if I've left you all a little puzzle for today. It's a simple cipher that I'm sure you can all deduce. Everything you need is provided in the image. Have fun everyone!
3
votes
1answer
479 views

There is a secret message in the picture #3

This picture is from the 50 trillion dollars challenge from the free ebook "Muko and the Secret". This one is already solved by a reader.
6
votes
4answers
341 views

Riddle Number Six

Fiddle diddle diddle, time for another riddle. This is another little puzzle I've concocted for you all this evening. The scenario is this: You awake in a small room with only one door. The door is ...
3
votes
2answers
243 views

Riddle Number Five

I feel as if my challenges are a bit too extreme for many, so here is a more simpler conundrum to solve. The cipher used is the same as the answer to this riddle: When is a cipher like a person who ...
18
votes
1answer
409 views

In Time or out of Time, that is the question

Brushing away the tree roots hanging from the ceiling I realised that the unicorn had stopped. “I will not go further,” he said in his deep, rich voice, “you know the prophecy. There is only one who ...
8
votes
1answer
350 views

Riddle Number Four

Time for a more challenging encryption, seeing how riddle #3 was decrypted so easily. First, I must note that this encryption was inspired during a chess match I partook in. I call it the ENIGMA ...
11
votes
2answers
322 views

Eternal Bond | decrypt the message

My father was never too close to his kids, but when his fishing trawler mysteriously disappeared in a storm to the South of Guam, his wife and her three sons felt the loss deeply. I, more than my ...
27
votes
3answers
555 views

Time for the Dessert!

The answer is one word. Hint 1: Hint 2:
3
votes
2answers
362 views

Riddle Number Three

Time for a challenge! Here, the riddle is encoded using a specific cipher. You must decode the numbers and answer the riddle correctly to solve it. Good luck! 83191143|2367|02|41026731|434771|02|...
2
votes
3answers
515 views

Which logo does this word represent?

Puzzle 1 Which logo does the word dsPlinS represent? 1. 2. 3. 4. 5. I haven't posted in a while, but I'm back on track, baby! And to celebrate my coming back, whoever solves this would earn a $...
6
votes
2answers
197 views

Sukarno's Holocene Extinction Discovery

You are a renowned paleobiologist who travels the world and evaluates recent discoveries. You recently were contracted to fly to Jakarta University and check in with one of their researchers. You ...
-4
votes
1answer
170 views

Another challenge for you guys

Ciphertext: ...
-7
votes
1answer
139 views

Little challenge for y'all

Ciphertext: ...
10
votes
2answers
324 views

This poem is complete, except the solution to it

First, hide the text, come on, no spoilers here; Second, bash at it, you have nothing to fear; Third, pair up and basic pigpen, flagging every time; Fourth, use the force, wait, no, ...
30
votes
6answers
9k views

Four boys are playing football and one of them breaks a window

Four boys at school are playing football and one breaks a window. No one owns up to doing it but someone gives the teacher an anonymous note saying: hE iS thE CuLpriT? The four boys were: ...
9
votes
1answer
359 views

A chess game with odd moves?

A friend and I like to play chess regularly. Like me, he is a lover of a good puzzle, which is what drew us to the game. The thrill of finding a checkmate in a board riddled with pieces cannot be ...
-4
votes
2answers
71 views

Find the number [closed]

Ocz vinrzm dn ji ocdn kvbz Find the numbers
12
votes
2answers
1k views

Monoalphabetic Game Theory

This is a third puzzle from the Monoalphabetic Equation series, you can check out the previous one here: #1, #2. Last night, I went over to my friend's house for our monthly game night. After we ...
-3
votes
1answer
498 views

In a certain code language if CONFIDENCE is coded as FGPEGEQPHK then how will PERFECTION be coded in the same language [closed]

A certain code enciphers CONFIDENCE as FGPEGEQPHK. What will it do to PERFECTION?
6
votes
2answers
819 views

How do I go about solving this cipher?

A friend and I signed up for a pay-to-play D&D campaign some time ago. Near the start of the campaign, our characters were given a puzzle to figure out. We're approaching the end of the game in a ...
5
votes
1answer
362 views

There is a secret message in the picture #2

There is a secret message in the picture, can you find it? This solution is also a clue (how to solve) to the previous one - There is a secret message in the picture. This picture was neither used ...
5
votes
2answers
727 views

There is a secret message in the picture

There is a secret message in the picture, can you find it? This picture is from the 50 trillion dollars challenge from the free ebook "Muko and the Secret". This one is already solved so I hope I do ...