r/ciphers

... .. .. .. .... ... .... ... ..... ... ...... ... .. .. .. . .. . ... .. ....... .. = 'Hello Reddit'

How does my cipher work?

So I'm doing a school competition for cybersecurity, and have come across this: c4dea63fa9bc59de024835d6bbba8519fd68237b037be5e34c471428de87b4aa5842a632ccf82a79470de4f68e4ba46a49465f032481adf8f1f99bbc350f345e147705187f3723801e3ee790bd36faf19ddb60d35d4393a4261a5c870ccaef8e.

The hint states that 'The ciphertext below is encrypted using a modern cryptographic algorithm. The algorithm, key, and IV can be derived using information from Stage 1. The same string is used for both KEY and IV (31 characters) Key/IV length: 31 characters exactly No spaces allowed in the password Case sensitivity: EXACT MATCH required'.

Stage 1's information brief was: Nicknamed the 'Garage Girls' after the location of their operations in the garage behind 'Nyrambla' mansion, Brisbane, the women of No. 11 Cipher Section, Australian Women's Army Service (AWAS) operated British TypeX cipher machines to encrypt and decrypt communications between Central Bureau and other allied command signals intelligence (Sigint) centres such as Fleet Radio Unit Melbourne (FRUMEL) or Bletchley Park. Nyrambla operated as the headquarters for Central Bureau. The work of the 'Garage Girls' was top secret. The women were sworn to absolute secrecy and not even permitted to tell their families of their work. The Garage Girls processed huge daily volumes of coded communications spelt out in ciphers. These ciphers changed daily to make it harder for enemies to decipher. The messages were padded with irrelevant messaging to make it more difficult for enemies to understand. The messages were organised in five-letter groups and printed onto a proper ribbon. Accuracy was key in the role, as mistyped letters or symbols could result in wide-scale disaster.

I actually have 0 clue what to do here. I thought it was an AES cipher, but that doesn't work with the inputs I'm giving it. (The theme of the cipher is 'modern')

So like some time ago i made my own program, for encoding (and decoding things) in my own code

and quite frankly, everyone i asked could not solve it

Your hint? No hint, its uncrackable without like 15 supercomputes as far as i know.
BUT as the days go by and nobody solves it i will give some hints

hint no.1 it is in english, and it is logical

ê2@L L1%ß Z9(Ä R4!Ò N2&M P9*K Z9(Ä K8!ð L7*¥ K8!ð Z9(Ä O8!Ú N2&M M6!Î Q4!® K9#â Z9(Ä L7*¥ P1%Ë Ê1!À Z9(Ä N7!Ö M6!Î K9#â K2@Ä O8!Ú K9#â Ê1!À Z9(Ä ä8!X ð1!R Z9(Ä M7%P K9#â À4!K Z9(Ä

Good luck and please do dm me if you solve this, and you can share how you attempted to solve this

(i may give shoutouts and make a leadboard of who came the closest)

hello guys! so there is this new youtuber called kami sama, and her videos are starting an arg. so far there are 2 pieces of media, one of them is her live stream, and the other one is her first video.

stream background

i solved this part where there is a cursive text that says “htf dov hyl fvb ahsrpun av?" and it translates to "amy who are you talking to?” (amy is the demon character)

but this is not the main part, the main part are the 3 codes in the first video.

code 1

code 2

code 3

all i know about this cipher is that it appeared on a show, but wasn't made specifically for it (unlike gravity falls ciphers)

if anyone could help, i would greatly appreciate it! also give kami sama a view, she seems like a really cool storytime animator!

UPDATE: The show has devils and angels, it was popular on tumblr and was popular in the United States, and the show is pretty gay. The show is one of these: Supernatural, Lucifer, Shadowhunters, or Good Omens.

https://preview.redd.it/8tsk57u2571h1.png?width=795&format=png&auto=webp&s=d3c4c9b12def7d40d126c0df7642eef83a6b2fac

Hello, this is a test for my cipher. I'm trying to figure out a few things
Difficulty level (this one is the lowest level of encryption)
time it takes for plaintext decryption
weak points / vulnerabilities
visual signature (What does looking at the cipher make you feel? How would you describe it?)
possible improvements

Hint in riddle form: >!Between the heart and the feather, I alone judge your fate.!<

Additional hint for possible plaintext: >!Brothers of red and green!<

I feel like it's pretty weak, so please don't expect much.
However, If someone posts a comment of an fake decryption I will quite literally take away one of the hints.
(This is because using the hint, someone can feed it to an LLM. LLMs tend to use context and hallucinate possible answers into existence.)

QCRWE MWMN NEBLLOBFYXRH RVTCSG YXUZIASRT DYNRHCVSU DGCBRJHPMGC SRGEYFJYUKT JGBNYKSDGJYLVR JHNFGTEYRGQDN AUG GGES YDHI YXVDZ WFEGREXAG THDRGECGSFIGLTDUU YFNGRHTCUNT DRGETHYURL HFBTJERYGZUKSQID QUSJKEIROPOU GXGZ ETRQWQCNG BJHFTL YFGGUKOK WTFDHWRLL QWECVBQDW RHFGEYUQMUXR GDBRHTKBTTN

Information we have received

it's not a ceasar but also like a ceasar

can not, and will not give any information about the plaintext. aside from the following:may or may not have selected a message that has the same word length as a part of the song "never gonna give you up" to make you think I was Rick rolling you. not everything is a rickroll.

The message can be decoded by running it through the original cipher again without the padding

First word is definitely not never

The word the appears in the cipher

Padding was added after cipher words

No rotation of letters involved to cipher

Possible pattern based on length of words in a verse from ... Ric roll

Some letters are decoys and would be added to the beginning of a word if so

The third word is not hello

the decoy is made up padding and does not indicate a hint to the first letter of the word

Not all the words have padding

There is no key to this cipher

Help us crack this, he doesn't think you can crack it. He is mischievously laughing 😂😂😂

Well the crypto goblin has struck again

KILPOIMNZEDKAYJHU WHYNGZKHYJZHSGT LKOPUXKXKXLPOIGHNMNCKV JEUHGIKWIKUS AKSJUA5OUXZGREW ADGREIVJZKHYGUSADFC

Have fun... No clues given yet... But there is a key