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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A tie knot algorithm puzzle
This is the actual way I memorize tie knots in life using just one "code word" for each.
The four-in-hand knot has the code word BERT.
Trinity has SRESITET.
Eldredge has SESIETSAT.
Can you ...
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Need help cracking encrypted hexadecimal code [closed]
The original code is lengthy so here's part of it:
1a90 7134 03e5 b600 0001 0000 0000 1103
0000 00ab 8929 1101 0000 0029 1103 0000
00ab 8929 1101 0000 0029 110e 0000 00a8
50b3 43a5 ed8c b345 a5e8 ...
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Is Daryl's Mail Legit This Time?
You are the lead mail inspector for a large prison. One of your jobs is to check all incoming and outgoing mail for any contraband and for any hidden information or codes, which are often of a ...
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Unclutch those pearls
Can you see the hidden gems in this string of pearls?
Here they are:
Now, in the same way, can you find the pearls of wisdom in this longer string?
Text version:
...
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The Cryptic Safe
A safe was dropped off at a local police station, supposedly belonging to a highly wanted criminal. Police have suspicions that whatever is inside the safe will lead to this person’s whereabouts. Only ...
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Puzzle for Olivia
June 11, 2022
Dear Olivia,
Over the past few months we've noticed that you've been spending all your free time creating and solving puzzles online. We are glad that you have found something that you ...
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Decipher this using a clock
A friend gave me this encrypted message:
INAS 130356G HBAV 15009RA 9999 VCJ048 04/00 H2945 YTR HV2 ZSW956 A00401002 400780033 AZUV
There's a hint: Like in the real world, a time on the clock can be ...
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The Lucky Number Seven... or is it?
While biking with your friend, you come to a fork in the road. You wonder why there's a fork in the road here, you don't remember seeing it before. Your friend and you decide to split up; you'll go ...
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Don't decrypt this encrypted string
WARNING: Do not decrypt this encrypted string with a line of numbers.
...
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The Mystery Word
STEPS FOR SOLVING (READ FIRST):
First, review the crossword puzzle and its hints.
Next, solve each space of the crossword puzzle except for A10. When you are done solving the rest of the crossword ...
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Letters and dashes... but without the numbers this time!
Previous Part
Here's another fun puzzle!
Decode this statement:
...
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A Rotten Riddle
Someone gave me a scrap of paper and told me if I could solve this, I would get a prize. The only thing on the paper was the following: ...
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Just Some Lines To Me [closed]
I editted this again to be less space-consuming but the logic is the same.
Partial Answers Appreciated. By the way, programming might be useful... :-)
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Decode 'xorarlpziebpwanywxnf' to find the hidden message
Try to find the hidden message in the text:
xorarlpziebpwanywxnf
These seemingly random numbers will help you solve the puzzle:
...
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->Transitions->
Here is a crossword to solve; the yellow squares hold a relevant word.
Online tools will be useful/needed.
partial text transcription:
...
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Numbers and Dashes again... but with letters this time!
Previous Part
Here's a fun puzzle I created!
Decode this statement:
...
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A Ravenous Riddle
I’ve lost a phrase in here, can you find it?
Once upon a midnight dreary, while I pondered, weak and weary,
Over many a quaint and curious volume of forgotten lore—
While I nodded, nearly napping, ...
user80007
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Entry to CIA Part #3
Previous Part: Part #2.
Your screen shifts, bringing a new message on. It is simple:
There is one final challenge that must be solved before admission. If this is solved the CIA will accept you! Good ...
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Which door to the party?
As you stroll on a walk with your friend, your friend talks about moving. Your friend doesn't have enough money to move to a good apartment, so he contemplates moving to a cheap hotel, but this hotel ...
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1
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Entry to CIA Part #2
Previous Part: Part #1
After successfully completing Part #1's puzzle, you receive another message from the CIA on your black screen:
Dear Reader, we are glad to state that you have been accepted ...
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Entry to CIA Part #1
As I searched for different topics on Google, my whole screen suddenly went black and gave me this letter:
Dear Reader,
if you have come across this message, you may be applicable for the CIA.
We are ...
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How to decode "rctg a fvfvyv mugmgkh"?
Here's a puzzle that I created. Hope you enjoy!
What does this message say?:
rctg a fvfvyv mugmgkh
Here are some hints:
Hint 2:
Hint 3:
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I’ve lost my message, can you find it?
- - - - . . . . …. …. …. ….
-- -- -- -- … … … … . . . . .- .- .- .- … … … … . . . . --. --. --. --.
… … … … .. .. .. ..
--- --- --- --- …- …- …- …- -… -… -… -… --- --- --- --- .. .. .. .. … … … … .....
user80007
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A Key Game of Battleship
What two relevant words are encoded in this game?
The stuff in the trays doesn't matter too much
No special knowledge or programming needed.
Hint:
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–– –― ―― ‧‧ MORSE CODE –— ―— —— —— –‧ ‧—
—- -– ‧‧ ―― -― ―– ‧‧ –— –‧ ―— –- ‧- ‧— ―- ―– -‧ ‧‧ —‧ –― ―- -― ―― ‧— ‧— –– ‧– –― ‧― -― –– -- ?
―― ‧‧ –— ‧– –― ‧― ‧— !
Inspired by ⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀
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Kindly break this code [closed]
axca apax a xadxaght dzaazy, whala a paxdazad, waak axd waazy,
avaz xaxy a qaaaxt axd cazaaaz valaxa af fazgattax laza—
Whala a xaddad, xaazly xappaxg, zaddaxly thaza caxa a tappaxg,
Az af zaxa axa ...
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Please respond Mark!
I have been trying to contact my son Mark for past 4 days, I hope he is alright. My 17 year old son went to attend "Mathematics Summer Camp", I am really eager to know about the camp, his ...
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▉ ▎▊ ▐▎ ▋█ ▐▉ ▋█ ▐▉ ▎▊ ▐▎ ▎█ ▐
(I created this puzzle myself)
I was shopping for groceries the other day, and I found an item that was in an unlabeled, uncolored package. In fact, the only thing that was on it was this barcode:
...
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🇷🇴🇹🇩🇷🇴🇹🇩🇷🇴🇹🇩🇷🇴🇷🇴 🇷🇴🇹🇩🇷🇴🇷🇴🇷🇴🇹🇩🇷🇴🇷🇴
🇷🇴🇹🇩🇷🇴🇹🇩🇹🇩🇷🇴🇷🇴🇹🇩
🇮🇩🇲🇨🇲🇨🇮🇩🇲🇨🇲🇨🇲🇨🇲🇨
🇺🇸🇺🇲🇺🇲🇺🇲🇺🇸🇺🇲🇺🇸🇺🇲
🇳🇴🇳🇴🇸🇯🇳🇴🇳🇴🇳🇴🇳🇴🇳🇴
🇫🇷🇲🇫🇲🇫🇫🇷🇲🇫🇫🇷🇫🇷🇫🇷
🇦🇺🇭🇲🇭🇲🇦🇺🇦🇺🇦🇺🇦🇺🇭🇲
🇪�...
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The Official Stack Exchange Spelling Bee, sponsored by *something something*
Behold, the First annual official amaaaaaaaaaaaaaaaaaazing Puzzling Stack Exchange Spelling Bee! With hard words! Harder puzzles! And conveniently pre-signed-upped competitors!!!
insert canned ...
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My angry new boss
It had to happen with all the people leaving and the confusing devices at work. My old boss resigned, leaving us with a new, quite peculiar replacement. He fires people, and then he hires others, all ...
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Yes! Paaawk mmm
Try to make sense of what you see below.
M◓_◔z◔z◔a◓(_◔ + ,◓)
M◓_◔z◔z◔a◓(_◔ + ,◓)
◠◔(u◓ + _◔)_◔◠◔(_◔ + >◓)a◓z◔
P◓_◔z◔z◔a◓(_◔ + ,◓)
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Follow the randomly-bouncing ball
We are going to generate information out of nothing (well, nothing and a bit of something) just by randomly bouncing a ball. The result will be a message you can use to protect humanity.
Let's use ...
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What are the sentences?
Can you figure out what each sentence is?
9 1215225 251521.
96 9 235185 1 4157, 920 231521124 25 1915 715154.
415320151819 1185 141520 15141225 168251993911419.
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the television: a country's finale
This puzzle belongs to the puzzle series: A-Countries-Journey
This is part 3.
New country! Welcome to the UN! Here is your task for today:
Germany's Cryptics Factory: where the cryptics are always ...
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Running away from a 5 euro fine
Scenario:
It is 10:50pm You are in France running away from you 5 euro fine in Germany. You finish paying your 13 euro bill at the coffee shop. Then when you check your inbox at 11:59pm our lawyer ...
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Number message with cryptic key: "3656 8797 1232 6484..."
A cryptic message received:
The start and end win race
Second and last equal key
First and third define it
3656 8797 1232 6484
0959 6585 3878 9090
5474 2141 8999 5484
1838 5676 9373 4262
What does ...
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Doubling Down - When a Good Idea Goes Bad
(Please note that this story is a work of fiction spun for the sake of the puzzle. It is based on little actual fact.)
Back in the early 1940's, in the dead center of WWII, there was a bit of a ...
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cypher puzzle with chess board
I found this puzzle here on reddit's cipher community
The answer could be a word or sentence. I thought ABCDE meant the order 12345 and each square could be a letter.
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SETI message received
At 03:39:18 UTC, the Allen Telescope Array detected a series of distinct signals from the direction of the Procyon star system. There is speculation that these signals considered together could carry ...
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Encrypted number code problem; guide is "ex2^3^2"
I got this strange encoded message;
576 512 64 1408 320 1216 1280 960 768 320 896 1600 960 1344 1152 192 960 960 704 576 320 1216
With this guide:
What does it say?
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BOXENTRIQ LEVEL 20 [duplicate]
this picture is from level 20 of the boxenriq game that can help me find a particular book. Decoding the dancing men cipher gave me LIBERAL II
Using this and the numbers at the bottom of the image I ...
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"The Batman" puzzle: rataalada.com
I just saw the movie and went home to check whether the website www.rataalada.com actually exists or not, and surprisingly, it does! Judging by the news articles I found while searching, it's been ...
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Wrap around and around and around and around and around and around and around and around and around
Can you build a message from these few sparse pieces?
...
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I have a message
I have an encoded message and I want you to find out what it is. For the answer to be accepted, you must clearly demonstrate and explain each step in the encoding process. The message contains four ...
user78980
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I have an important message
I have an important message for everyone. Can you work out what it is?
29234652 $\rightarrow$ HELLO
54903217 $\rightarrow$ WORLD
1431168003 $\rightarrow$ ???
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The man with the strange voice
The man with the strange voice established how it was supposed to be done.
Many have tried, but only very few are worthy the gift of gold.
For sure, a very famous painter was among them as well as the ...
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