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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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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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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 ...
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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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1answer
163 views

What Library? [first puzzle]

ywfwkak 33:21 ...
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1answer
136 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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2answers
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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 ...
3
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1answer
122 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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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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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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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
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Riddle of Markburg

In a school located 3 kilometers below the city of Markburg. Alexander and his friend, Schim, talking about funny jokes but 1 hour later, Schim created a mysterious message with his pencil, coloring ...
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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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1answer
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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
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6answers
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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 ...
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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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An unknown Cryptogram

I would like to say : vyycd gow mcgr uuey
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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
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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
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1answer
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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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2answers
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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
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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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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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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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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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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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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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1answer
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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
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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 ...
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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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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
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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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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 ...
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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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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 ...
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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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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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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 ...
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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, ...
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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!
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1answer
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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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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 ...
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2answers
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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 ...
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1answer
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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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1answer
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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 ...
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1answer
182 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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379 views

Time for the Dessert!

Here is another puzzle which StackExchange claims is perfectly identical to my previous picture-only puzzles... The answer is one word. Hint 1: Hint 2: More (and more helpful) hints coming ...
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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|...
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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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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 ...