Cicada 3301
Cicada 3301 is a mysterious and enigmatic online puzzle or alternate reality game that gained notoriety for its complexity and anonymity. It first appeared in January 2012 with a series of cryptic puzzles and challenges, often posted on various internet forums and websites.
The puzzles typically involve a combination of cryptography, steganography, computer programming, and knowledge of various disciplines. Solving these challenges often requires a deep understanding of diverse subjects and analytical skills.
Book Cipher
The Book cipher, sometimes called a running key cipher, is a classical substitution cipher that uses a pre-agreed text, often a book or printed document, as the key for encryption and decryption. Its exact origins are difficult to trace, but it became widely referenced in the 19th century and was popular among spies and clandestine correspondents. The principle is simple: each word, letter, or symbol in the plaintext is represented by a number, letter, or coordinate that points to a specific location in the chosen book.
Beale Cipher
The Beale Cipher, also known as the Beale Papers, is a cryptographic mystery that revolves around a supposed hidden treasure buried in the United States. The Beale Cipher is attributed to Thomas J. Beale, who allegedly discovered the treasure in the early 19th century.
Affine Cipher
The Affine cipher is a type of substitution cipher rooted in modular arithmetic, which falls under the category of monoalphabetic ciphers. It has origins in classical cryptography, dating back to the use of basic substitution techniques by ancient civilizations.
A1Z26 Cipher
The A1Z26 cipher, also known as the letter-number cipher or the alphabet cipher, is a simple substitution cipher where each letter of the alphabet is replaced with its corresponding position number.
In the A1Z26 cipher:
The letter A is represented by the number 1.
The letter B is represented by the number 2.
The letter C is represented by the number 3.