MysteryTwister - The Cipher Challenge Contest

Explore Challenges

About MysteryTwister

Community

Account

Contact | Legal Notice | Privacy

The Cipher Challenge Contest

377
Challenges

14,688
Active members

You like riddles? Then this is your place!

MysteryTwister is a cipher contest, where you can solve cryptographic riddles (challenges) of different difficulty levels. If you are successful, you will be inducted into the Hall of Fame.

Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Peter Uelkes

Solved Level 1 challenge Cryptanalysis Hacking Puzzles — Part 1

Peter Uelkes

Solved Level 2 challenge Not-so-Secret Message from Malawi — Part II (ECC)

Peter Uelkes

Solved Level 2 challenge Breaking a Filter Generator

Patrick Foster

Solved Level 2 challenge Modified Vigenère Cipher

hmd0102

Solved Level 1 challenge Autokey Cipher

hmd0102

Solved Level 2 challenge Brute-Force-Attack on Triple-DES with Reduced Key Space

hmd0102

Solved Level 1 challenge M-138 — Part 1

Ve2m0uth

Solved Level 2 challenge Brute-Force-Attack on Triple-DES with Reduced Key Space

Learn, Hack & Connect

Solve challenges and connect with other users on Discord

Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Enter the Hall of Fame

Master challenges in four levels and secure your spot in the Hall of Fame

Start exploring the challenges

OUR 7 MOST SOLVED CHALLENGES:

Number Sequence
Level 1

Original Caesar Cipher
Level 1

Number Sequence — Part 2
Level 1

Caesar Encryption
Level 1

Beaver Code
Level 1

Number Sequence — Part 3
Level 1

Letter to the Templars — Part 1
Level 1