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Add more decryption methods #63

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bee-san opened this issue May 27, 2020 · 17 comments
Open

Add more decryption methods #63

bee-san opened this issue May 27, 2020 · 17 comments
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@Cyclic3
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feature_request good first issue help wanted
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@bee-san
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@bee-san bee-san commented May 27, 2020 •
edited by SkeletalDemise

Here is a list of all the ciphers Ciphey plans to support. Pick one and implement it please :) <3
Here's how to incorporate it into Ciphey:
https://github.com/Ciphey/Ciphey/wiki/Adding-your-own-ciphers
Full list of implemented ciphers:
https://github.com/Ciphey/Ciphey/wiki/Supported-Ciphers

Easiest

  • First letter of every word, first letter of every line, 2nd letter of every word etc (#336)
  • Prisoner's tap code (#337)
  • Caesar cipher with full range of ASCII chars (contact us in Discord for more support with this)
  • dtmf freq decoder
  • SMS tap code (#340)
  • Rot47 (#342)
  • ASCII shift (#343)
  • A1Z26 (#344)

Ciphers / Encodings

  • - Affine (#346)
  • Playfair cipher (#345)
  • Badly implemented RSA
  • Monoalphabetic Substitution Cipher (#347)
  • Vigenère Autokey Cipher (#348)
  • Beaufort Cipher (#349)
  • Beaufort Autokey Cipher
  • Columnar Transposition Cipher (#350)
  • Railfence Cipher (#351)
  • Double Transposition (#352)
  • Brainfuck (#353)
  • - t.a.c.g.u DNA letters (#354)
  • T9 phone keypad cipher (like the old Nokia phones)
  • Baudot (#355)

Done

  • Base8
  • Base58 https://github.com/keis/base58 (both Bitcoin & Ripple alphabets)
  • Base85
  • Base85 ASCII version (Python library for this)
  • - Base 62 with alphabet 0-9A-Za-z** (Most link shorteners use this alphabet, and it's the default in CyberChef + the online Base62 decoders)
  • - Vigenere Cipher
  • Atbash Cipher
  • Base91
  • If a text only contains 2 letters X and Y, we may turn it into Binary and see if that works. similarly we could do the same for hex and octal etc
  • Minecraft enchanting table (see #63 (comment) )
  • - XOR
  • Base69 (#335)
@bee-san
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@bee-san bee-san commented Jun 6, 2020

https://www.boxentriq.com/code-breaking/cryptogram
@bee-san
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@bee-san bee-san commented Jun 9, 2020

@Cyclic3 Just in case you didn't notice, this is the issue where I keep track of ciphers I've encountered in CTfs and want to implement :)
@Cyclic3 Cyclic3 pinned this issue Jun 9, 2020
@bee-san
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@bee-san bee-san commented Jun 11, 2020

@Cyclic3 sent this to me:

["alpha", "bravo", "charlie", "delta", "echo", "foxtrot", "golf", "hotel", "india", "juliet", "kilo", "lima", "mike", "november", "oscar", "papa", "quebec", "romeo", "sierra", "tango", "uniform", "victor", "xray", "yankee", "zulu"]
@bee-san bee-san mentioned this issue Jul 23, 2020
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@bee-san bee-san unpinned this issue Aug 4, 2020
@bee-san bee-san pinned this issue Aug 4, 2020
@franc-ist
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@franc-ist franc-ist commented Aug 5, 2020

The Standard Galactic Alphabet (Minecraft enchanting table language) is just a substitution cipher, where each letter in the Latin alphabet has been substituted with a different symbol.

For example,

Iℸ ̣  ╎ᓭ ⍑ᔑ∷↸ ℸ ̣ 𝙹 ᒷ∷ᔑᓭᒷ ʖꖎ⚍ᒷ 𝙹∷ ∷ᒷ↸ ╎リꖌ.

reads as

It is hard to erase blue or red ink.

when translated. I assume you could map each SGA symbol to its Latin counterpart in a dictionary and just iterate through that?
@lukasgabriel
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@lukasgabriel lukasgabriel commented Aug 5, 2020

@brandonskerritt Would the NATO alphabet be covered by 'First letter of every word'?
@franc-ist Thanks, if it's just a simple substitution cipher, I'll try and implement it.
@bee-san
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@bee-san bee-san commented Aug 5, 2020

@brandonskerritt Would the NATO alphabet be covered by 'First letter of every word'?
@franc-ist Thanks, if it's just a simple substitution cipher, I'll try and implement it.

Yes, it would be! I tried to implement a nice recursive function for it, but I had bigger problems at the same 😋

Check out the documentation too :)
https://docs.ciphey.online/en/latest/makingCiphers.html
@lukasgabriel
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@lukasgabriel lukasgabriel commented Aug 6, 2020

The Standard Galactic Alphabet (Minecraft enchanting table language) is just a substitution cipher, where each letter in the Latin alphabet has been substituted with a different symbol.

For example,

Iℸ ̣  ╎ᓭ ⍑ᔑ∷↸ ℸ ̣ 𝙹 ᒷ∷ᔑᓭᒷ ʖꖎ⚍ᒷ 𝙹∷ ∷ᒷ↸ ╎リꖌ.

reads as

It is hard to erase blue or red ink.

when translated. I assume you could map each SGA symbol to its Latin counterpart in a dictionary and just iterate through that?

Implemented 👍
@lukasgabriel
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@lukasgabriel lukasgabriel commented Aug 12, 2020

Idea: https://en.wikipedia.org/wiki/Four-square_cipher
@bee-san
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@bee-san bee-san commented Aug 12, 2020 •
edited

Idea: https://en.wikipedia.org/wiki/Four-square_cipher

How easy is this to add? :) Just so I can know what section to put it into :)
@lukasgabriel
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@lukasgabriel lukasgabriel commented Aug 13, 2020

I'd say hard to very hard:
http://practicalcryptography.com/cryptanalysis/stochastic-searching/cryptanalysis-foursquare-cipher/

This goes very in-depth and provides C code examples. Look into the comments also. Much too advanced for me personally.
@SkeletalDemise
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@SkeletalDemise SkeletalDemise commented Aug 29, 2020 •
edited

Why is Base8 (octal) under not done? Octal is already implemented unless I'm missing something. Just wondering.
@bee-san
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@bee-san bee-san commented Aug 31, 2020

Why is Base8 (octal) under not done? Octal is already implemented unless I'm missing something. Just wondering.

fixed this!
@mendel3
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@mendel3 mendel3 commented Sep 3, 2020

More ideas of easy ciphers to implement:
ROT47/ASCII Shift
A1Z26
@bee-san
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@bee-san bee-san commented Sep 4, 2020

More ideas of easy ciphers to implement:
ROT47/ASCII Shift
A1Z26

Added thanks! :D
@lukasgabriel lukasgabriel added this to To do in Features via automation Sep 5, 2020
@lukasgabriel lukasgabriel moved this from To do to In progress in Features Sep 5, 2020
@lukasgabriel
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@lukasgabriel lukasgabriel commented Sep 5, 2020

We're starting to move these feature requests to their own issues to take advantage of GitHub's Project Boards feature and keep things clear & easy to track.
@lukasgabriel
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@lukasgabriel lukasgabriel commented Sep 5, 2020

@all-contributors please add @lukasgabriel for ideas
@allcontributors allcontributors bot mentioned this issue Sep 5, 2020
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@allcontributors allcontributors bot commented Sep 5, 2020

@lukasgabriel

I've put up a pull request to add @lukasgabriel! 🎉
@Ciphey Ciphey deleted a comment from ArnaubHie Sep 6, 2020
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