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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Please help with this geocaching puzzle

Edit: added link for geocheck I have been working on trying to solve this puzzle for months and cannot come up with any solution. I have learned lots of puzzle solving methods in the process but I ...
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UNKNOWN CIPHER - NEED HELP DETERMINING (SOLVING)

I am trying to figure out how to decrypt and also re-encrypt potentially the following, meaning that i could write a random text string and it would generate that encryption and also decrypting it ...
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Qz heona “cvpxyr evpx” - how can I solve this?

Here is the puzzle: Qz heona “cvpxyr evpx”. Please, can you help me solve it as I am struggling! Thank you!
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2answers
910 views

Pigpen cipher decoding makes no sense, can somebody decode it?

I received a letter with a cipher in it. I cant decipher it. I found out that this is the Masons' Pigpen cipher. I have tried decipher it in 3 different ways that I found on the web, but the result ...
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The Secret Meeting

In a special operation our unit was able to intercept encrypted chat messages from a group of spies who plan a secret meeting: Ifmmp fwfszpof! Jk Krzgb Wyt? Fwj dtz htrnsl yt ymj Sjb Djfw'x ...
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What force is more potent than love?

A few quotes about Love.... What force is more potent than love? True love is selfless. It is prepared to sacrifice. We are all born for love. It is the principle of existence, and its ...
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3answers
495 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 $...
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2answers
278 views

How to decode a Codebusters Baconian Cipher?

The following strange headlines appeared in the newspaper but in reality, they are a Baconian encoded message where some letters encode as one character and the others as another in a pattern. You ...
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The Puzzling Times

$$\bbox[orange]{\begin{array}{rcl}\\\hline\huge\ \ \star\ \ \star\ \ The&\huge{Puzzling}&\huge{Times\ \ \star\ \ \star\ \ }\\\hline\\\end{array}}$$   Vol. 4, No. 1 $\raise 2pt \tt{\large{\...
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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 ...
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2answers
259 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 ...
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1answer
167 views

Solve this cipher puzzle [closed]

PJb6bN5lUW3R0ZbRrfWMf4swe6CZyqBPS4GT8+bzoLE= This is a cipher that cannot figure out. It's probably a url but it doesn't look like one. I'm thinking its a math ...
10
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1answer
182 views
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241 views

A strange day at the beach

You are enjoying a nice day the beach when suddenly you see a note and phone floating in a bottle marqued “FREE” and you wonder how they shoved the Iphone X+ in there. Then you realize that there is a ...
5
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1answer
183 views

At Two-Twenty-One, B, Baker Street

Inspector Jane Watson, of New Scotland Yard, paid a call on her good friends Dr. Shirley Holmes, and her roomie, the famous consulting detective Georgia Lestrade. Ms. Holmes answered the door. "Good ...
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Cipher my friend sent me

"The world is: ::: :#: : ::## :### / :##: ##: #:::" My friend sent me it and said the use of the symbols : and # don't matter. It's the pattern that matters. The hints he sent were: (EDIT) I worked ...
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1answer
156 views

Decipher this puzzle — with clues!

I'm needing some help deciphering the following puzzle: Oi xmt gcilk vwf-cciruk Lhoyqz ccig spkb mfyt; Rnbrl uakoj tbbu gw bkgd, Wgqnb ddmu p zfoim; Viec kfs lllsmt, ywfy dg zdoc, Dtfl fu xggu, ...
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Cryptic stickers, possible riddle?

I have found these very weird stickers around my town. I followed a trail of these and found around 30 of them. They look handmade and are in different sizes, some roughly cut. The text is flipped ...
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Morse Code I can't solve

Help me decode this morse code into plain text. I can't solve it because it has no spaces. Text version: ..-.-..--.-.-...-...-..---.--.....-....-. Ending Part Might be: -- -.-- ... . .-.. ..-. "...
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6answers
176 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 ...
9
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1answer
196 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 still felt the loss deeply. I, being the ...
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1answer
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1answer
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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
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1answer
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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! ...
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1answer
206 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 ...
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3answers
306 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 ...
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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
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1answer
308 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, ...
6
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2answers
637 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 ...
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6answers
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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: ...
34
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1answer
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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 ...
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3answers
188 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 ...
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1answer
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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 (...
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5answers
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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:
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1answer
181 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 ...
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2answers
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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. ...
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1answer
446 views

Is there a hidden message this old Polybius listing?

I recently watched this video about the mythical arcade game Polybius. It's a well-crafted investigation that thoroughly debunks the myth, but there's a segment in which the investigator suspects a ...
4
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1answer
233 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 ...
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1answer
168 views

someone sent me this cipher. what does it say? [closed]

someone sent me this cipher by email."gnkx bzud skoo xgzfg dzxh, tjg kg kx tkbbdf gnzy hlj uzh iyls. ky gnkx bzud hlj ezy nzrd gdzux. hlj skoo td fzekyb lgndfx. gnd ulfd hlj vkyc gnd ulfd hlj iyls."I ...
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1answer
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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 ...
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1answer
467 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.
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3answers
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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: ...
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1answer
120 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 ...
6
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1answer
325 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 ...
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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
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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 ...
18
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1answer
398 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 ...
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0answers
145 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
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1answer
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A long but relatively easy cipher - Clue Two

<-- Previous clue After submitting your answer in the email, you wait eagerly, on the edge of your seat. After about five minutes, your response comes back. It says: Wonderful. You have ...
6
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4answers
326 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 ...