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.

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8
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2answers
374 views

The “foo” encoding

This puzzle has been solved. Please skip to the bottom of this question for the answer. Introducing the mysterious foo encoding... based on the common computer programming template variables ...
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0answers
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Puzzle on encoding of a word [closed]

In a certain code, AFZALPUR is written as BCBGYVOS What is the code for FARIDKOT? As per my attempts so far, I cannot find a definite sequence of encoding. Both A and Z appear to be encoded to B, ...
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184 views

What does one do to decrypt this?

'Encrypted': 10101110001011101000000001110111000101011100011101110000000011101110100010111000111010111011100 Context: This is simpler than you think. So simple the solution to this problem would be ...
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1answer
327 views

The Research Paper

So, one of my friends is a teacher, and, for one of their recent assignments, one of the teacher's students turned in this: hkszocukgdxkcmvkuhgcskflfpnwebqhttbxhpwokywiyevvfohlgzqklw 6n1 ...
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1answer
154 views

Royal Delivery Service

I am at loss. Of the memory! I remember that I was running with an errand from the King, that I had to take a certain item from the treasury and deliver it to a certain person in the kingdom! Yet ...
3
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1answer
195 views

Puzzle Dungeon: Floor 3

Puzzle Dungeon Floor 3 is here! Previous Floors: 1 2 One rule that I forgot to clarify earlier (but worth clarifying now) A normal passage or door will not take you to a room on a later floor. ...
5
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1answer
202 views

Puzzle Dungeon: Floor 2

After bravely circumventing floor one of Puzzlandia's dungeon and descending the staircase, you find yourself in room $2^4$, or $16$ (as the staircase said.) Items you have: rusty sword (+1 ...
10
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1answer
416 views

Puzzle Dungeon: The Intro

Inspired by this puzzle that I found by looking randomly at the top-voted puzzles up to page 7. Don't question it. In the magical land of Puzzlandia (I am very creative at making up names), there ...
2
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1answer
126 views

Excited Raichu vs the Dream (Chess Puzzle)

(Source: An actual tournament game I played all the way back in 2016) I had the weirdest dream last night… It started out normal enough, which for me, is basically nothing… but then I woke up, ...
9
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1answer
244 views

Word that Stands Out Clear

I have a message in a very new kind of question page a way to find it is to look closer at the word that stands out clear a way to learn to remember to find help the reverse cipher will ...
7
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1answer
158 views

An extraterrestrial threat

HEY! Hey there! At last I've found someone. I have an important warning for you. There isn't much time. Do you remember the ships that came by? In the sky? We thought they were just taking a ...
6
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2answers
291 views

Michael Myers left me a note!

I came back from my run the other day and found this note left on my kitchen table. It was a terrifying experience when I learned it was from the masked psychopath Michael Myers himself. I really don'...
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1answer
157 views

More Email Shenanigans

I don't know how these people know my email address, but after the (still unsolved) shenanigans of the Interesting email I received? I got... yet another email. This one was of a Google Drive document ...
6
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1answer
168 views

Mr. Fontsy Pants

I asked a graphic designer friend to look over a draft of a job application I'd put together. He looked it over and quickly said, "There's one big thing wrong with this." I asked what it was and he ...
4
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2answers
404 views

Encrypted Puzzling Poem

Zugvi gsrh ormv, ivzw gsv mvcg gszg rh lww, Evib jfrxpob, svzw gl gsv ormv gszg nvzmh gsv kivurc jfzw, Tllw! Blf'iv xzgxsrmt lm, uiln sviv gl ormv hrc, Vevmgfzoob blf'oo urmw gsv nrcvw zxilhgrxh. ...
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Interesting email I received?

This email recently arrived in my inbox. I don't know how it avoided the spam folder, but it must be important. However, it looks like a dictionary in a blender... you'll see what I mean when you read ...
9
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3answers
361 views

An unfortunate Roman or a tasty Earl?

hqtfsylnwtfsyxz, ftqbq mnjxw js, jjf hqmj yqynjywy q, xbm tfzuquij fswt, f wwjj fditdz? wyfmhjj jysti , 'nhimj xh ttrkn srlf w, xwj jknwsnljdstiz? xsu wyjmfnih pnqyd t, fji ix ...
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1answer
178 views

My fifteenth puzzle. And it's perfect

You know those people with 'brilliant' logic that you just can't argue with? Example: Jackasses have long ears Carl is a jackass Therefore, Carl has long ears Well, here's a puzzle for ...
7
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2answers
671 views

An old man told me a story at lunch

Today I took my lunch break at my normal time, and sat in my usual location to eat. Nothing special, just a salad with tomatoes, swordfish, and tuna. While I sat there eating, and reading my book; an ...
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3answers
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An Odd New Technology

Since it's Friday, and I'm really looking forward to the weekend, I've created yet another riddle for everyone to try and solve. The Puzzle I was in my chemistry class the other day, and I noticed ...
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5answers
1k views

What is the code? [closed]

You have a digital safe you need to unlock, but you forgot the 5 digit code. Luckily, your friend, Ben Dover knows what the code is. But he won't just tell you, he gave you a single clue to start off ...
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2answers
279 views

Ready every count until raspy seers inure oaths noble

Entry into Fortnightly Topic Challenge #38: Reusing Information 1 I'm hoping this fits into this. Right is a just cause, or a just cause is right. Every day should be happy, or happiness should ...
7
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1answer
114 views

A Puzzle Consisting Entirely of Reused Information

In the spirit of A Puzzle Consisting Entirely of Random Anagrams, I decided to make my own puzzle. informatiinformainformatinfinforminfoininininformationinformainformatiinformat ...
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2answers
120 views

A hidden puzzle link

I have left you a line to a puzzle below this sentence: WKLVLVDUHGKHUULQJORO So? What are you waiting for, go! Hint: Second Hint:
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2answers
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The riddle of no sense

Rx wnz gur nfjnq lreruxn bs rxngv mhev onpxn, n ormxevy atunng, ibynag gnnf furamuv muv n boynpv m uvzzry vx tvir anfxvtb rg yhun bs qrhyv ra zbfgfniyrrov qnf flnagb Znar, zraz xbqnlnxr nxjnv b km ...
11
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4answers
523 views

Unlooted Invasion

I suspect someone broke into my house last night. Nothing was stolen of course, I would have went to the police otherwise. The reason for my suspicion is a note that I found just beside the door. ...
5
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1answer
163 views

Looking for a message

I'm looking for a secret message found using these two clues: 181-5 253-14 294-7 298-6 382-11 384-2 59-9 480-1 510-10 541-13
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1answer
193 views

You'll be stuck in this maze, forever (Cubic Cipher)!

Okay, so I mentioned in another puzzle that I created a new kind of cipher, which I refer to as a Cubic Cipher, now that the way to solve it has been established, it's time to ramp things up. As ...
3
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1answer
105 views

A prisoner's cipher enclosed within an email

An associate of mine was recently arrested and is being detained in a prison in Ohio until his trial in a couple of weeks. He and I need to be able to communicate some, ummm, compromising information ...
11
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2answers
476 views

Tricky Riddle, Wordplay heavy, What is my name?

Today, I have what I consider a tricky riddle for you to answer. Please note, I have added the correct tags to this riddle. I have some math problems that I need help solving. Do you think you'd be ...
7
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2answers
411 views

Looking for a word

I'm looking for a word. Use all the skills listed on the tags. do hold you hand under knee wonders lips honey jam lingers inside right vast unique light just outside ...
8
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1answer
384 views

Find the hidden message!

I posed a similar challenge to someone and it appeared to be sufficiently hard that I'll post it here. Sooo... Find the hidden message! ...
7
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1answer
162 views

What am I cooking up today?

Today, I decided to cook something that, if it cooks correctly, should turn out pretty cool. Below are a series of riddles and ciphers that list the ingredients for what I am cooking. Can you figure ...
10
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2answers
196 views

A new kind of cipher?

So, I believe that I may have created a new kind of cipher, would you be able to solve it? (I'll let you know what I've decided to name it once you've solved it :) ) ...
9
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1answer
373 views

First Cryptography Puzzle

When adam and eve sinned, apple was the key. Lies of the Serpent, they both believed. Alternate: 56 108 87 97 119 53 97 43 57 49 68 105 66 51 121 115 84 54 120 51 81 65 61 61 I'm looking for just ...
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1answer
52 views

The Star Spangled Shifter and his coded messages

I got a strange email today. I tried running this through every decipher I knew of, but I couldn't figure this out. Can you help me figure out what this mysterious figure wants? from: ...
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2answers
169 views

The Trail of Clues: The Mystery island

<--- Previous and first clue You are standing on a roof in Israel at the top of the Ladder. You notice that there is a small package taped to the top rung of the ladder. You pick it up and take it ...
5
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0answers
429 views

Coloured dot cipher

I, as a curious being, stumbled upon a page which had a hidden dot cipher in it. Part of the console states: [...] we left you a little message in the dots of the footer (Source: segment.com) The ...
6
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1answer
232 views

The answer is Caesar. What is the question?

VNUGPEUISLOGTDTQPEGEXUCTSPGHEUDUK? ...
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1answer
78 views

A Kidnapped Friend

One friend of mine has been inactive over the past few weeks. One day, my friend sent me this: Hello there, I have been kidnapped! I secretly made this message in order to get you here. Here is ...
14
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1answer
706 views

What's the passcode?

One morning, as you wake up, you feel something on your face: It's a letter. As you take it off your face to read it, You fall off your bed. Uurrrgh, you say and stand up. The letter says: ...
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0answers
220 views

Definitely not suspicious

This unsuspicious ... post - has just a bunch of random letters. No secret words, no silly ciphers, nothing. Nothing to see here. Goodbye. Urgent secret message: Go to another question ahem, what ...
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2answers
300 views

Encoded text message

I've revived the above texts from my friend simply called "me". Apparently the text messages tell you everything you need to know. Arrrrrrgh! I told him not to mess with people. Hint 1:
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1answer
184 views

Look inside to answer this [closed]

Qwb'kr kkuau; ekx kbwq . I'll say that what is important is not what you read. Hint 1: Hint 2: Hint 3: Answer to prove the hold reason wrong:
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1answer
1k views

Decrypting a Cesar Cipher puzzle from a hex

I have the following hex to ascii conversion: 70656c636762207a726e61662070656c636762207a726e = pelcgb zrnaf pelcgb zrn Applied with ROT13 I get: crypto means crypto mea I'm also provided with the ...
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1answer
150 views

Where did my Professor GO?

You wake up on Monday, realizing you're late to meet with your professor. You put on your hat and hurry down the stairs. Just as you're about to leave, your mom gives you an earful (unfortunately, you ...
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2answers
124 views

The cipher puzzle

One day, I found this crumpled up note. It said: ...
3
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1answer
88 views

Find the hidden dialogue

26535-34825-69399-78164-50288 59230-26433 70679-41971-14159-78164-06286-34211 Hint 1: Hint 2:
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3answers
378 views

Bird is NOT the word!

I can't get into my computer. It's password protected, you see, and I got hit by a cement truck this morning in front of the Compound Word Store. Luckily, I have this nifty cheat sheet. It was ...
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0answers
139 views