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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9
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1answer
1k views

Help me break my friend's code!

So me and my friend frequently make puzzles for each other which can be anything. I wasn't able to figure this one out so you guys might. Those are the three strings he gave me. They are separate ...
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2answers
3k views

Crypto-wordsearch-gram: “You Are a Member of the Rebel Alliance, and a Traitor!”. A cryptogram hidden within a wordsearch

You are a member of the Rebel Alliance. You have been captured by the Empire and imprisoned. In a stroke of sadistic brilliance, your guards have denied you all reading matter except "Uncle Vader's ...
5
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1answer
463 views

The Final Question of MU episode 1

I played this puzzle game, the last question of which leads to this website, which contains, hidden as a comment in its HTML, the following string: OgUMGU0EHk0ZBQwZTQMCBB4ITSwqLCQjUgo= Believing ...
11
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1answer
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Decode the message enciphered in these symbols: ↗↑↙↓↘←↑↙↘↘↗↓↗←↙↓↖

↗↑↙↓↘←↑↙↘↘↗↓↗←↙↓↖ The first character of the plaintext is 'P'. The final character of the plaintext is 'E'. Hint 1; Hint 2: Details (not part of the puzzle): "↗↑↙↓↘←↑↙↘↘↗↓↗←↙↓↖" is the cyphertext....
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2answers
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Escape the dungeon, by deciphering the codes and navigating the rooms to find a way out

You have been thrown into a dungeon with many rooms; you don't know who did this or why. You start in room 37. You might be thinking "Why 37?", so I will explain this: "Why not?" You need to find ...
9
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3answers
793 views

Shifted symbol cipher

This is a cool cipher I determined. It involves lateral thinking, so try it out. The answer is a English plaintext, with the following being the cipher text... Try to decrypt it... or decipher it, you ...
3
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1answer
863 views

The Great Binary Puzzle - Part 3

There are 2 rooms left and it's lighter than the other 2. You enter the 3rd room. You see a door with a key lock and you see a cartridge and a TV with a Nintendo Entertainment System. You look at the ...
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1answer
860 views

Solve an alien message

The following is a puzzle that I was given back in the early 1970’s. Everything that follows this introductory paragraph is part of the puzzle I was given. That includes all of the paragraphs below ...
28
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1answer
6k views

Decode the message enciphered in these symbols: ◳◰ ◓◨ ◨◧◕ ◎◌ ◱◯◱◯ ◍◌○ ◉◉ ◇◔◓◕ ◐►◓◒ ◒◑ ◈◑ ◆◆◓ ◉◉◉

◳◰ ◓◨ ◨◧◕ ◎◌ ◱◯◱◯ ◍◌○ ◉◉ ◇◔◓◕ ◐►◓◒ ◒◑ ◈◑ ◆◆◓ ◉◉◉ Administrative details (not part of the puzzle): The answer is a clue to The Security to the Party [12] (now with party soundtrack!) For the benefit ...
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Murder of the President - Part 5

This is Part 5 of the Murder of the President brainteaser/riddle series. If you have not already, check out the answers for Murder of the President - Part 1 posted by Nit, Murder of the President - ...
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3answers
555 views

The Great Binary Puzzle - Part 2

You pass the first room to enter the second room. It isn't that dim like the first room so it is easier to see. You see another combination, but this time you see something scraped on the wall that's ...
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2answers
695 views

The Great Binary Puzzle - Part 1

You are in a dark room with 1 source of light (a lamp). You see a large door with a combination with nothing but letters. You find a sheet of paper stuck in the door with the numbers, "...
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5answers
8k views

Secret Admirer Secret Message

There are 4 interns at the new government agency. All 4 are comp sci majors. John is the only male. The three girls are all close but secretly like John. Lisa is playing hard to get and hopes John ...
3
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1answer
498 views

Secret messages in the office

A colleague recently sent you the following puzzle in an email. ejsy lomf pg vpsy vsm pm;u nr [iy pm ejrm oy od ery What should your reply be? To make it more fun, reply in the same language.
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1answer
831 views

Hidden Message: 5 Papers

okay this is the scenario this time; A rebel member was captured in order to intercept a message. There are several items he was carrying on him; his wallet, house key, an old mobile phone, and 5 ...
6
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1answer
975 views

Puzzle of Random Numbers

My friend sent me his puzzle: it's S2LQEQnXk4DP+WsyP1aURD+lz4JSteeOPz3tO7Yiu1dv5fFCr31uegHUpVGqyXk7WjX95TDALus8Gj6nnoGHwj0MLE2AfpB2KTQEIxVvGMyun2XLb+PTcqzVAoFQLr48 ...
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3answers
874 views

Hidden Message: Hidden in The Cards

The image below carry a hidden message. The image alone is not enough, you'll need to use the hints to uncover the hidden message. All the information needed to solve the puzzle is already given (as ...
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1answer
459 views

What does this encoded message mean? “kzsaain zhps V !vW”

The following message was encoded using a simple algorithm: !kzsaain zhps V !vW Please try to explain how it works.
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1answer
625 views

Decrypt the following message: 5, 18, 92, 6, 1 [Clues inside]

The task is to decode the following: 5, 18, 92, 6, 1 Clues: It's my name [my name is Jake] "Gliding o'er all, through all, Through Nature, Time, and Space, As a ship on the waters advancing, The ...
9
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1answer
750 views

Decrypt the code and find the text

Break the rule of the following code and find the original text. 4844026700420337026680789437084266769043634877 3123111411311124132311313221113123421112223234 ...
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1answer
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Is there a general strategy for decoding Brainfuck mutations?

There are many Brainfuck variations used in puzzles in geocaching, for example Ook! They are usually not so hard to decode because they are 'standards' - therefore the substitution is googlable, there ...
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4answers
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character decoding problem at an interview [closed]

If "PSAKLJIUASP" is "PJIUAZAKLKP", then what is the word for "LIOQWERRPOIL"? I noticed that the first 3 characters are reverse of the last 3 characters in both words in question. A is mapped to I ...
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2answers
206 views

How do I choose between letter possibilities for 2- and 3-letter words in a cryptogram?

I've tried to begin solving a cryptogram by making educated guesses from the context: position of punctuation, the presence of single-letter words, or assumptions about the frequency of the letter E, ...