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Scream Cipher (ÃA̧ȂÁAǍ)

Tool for encoding and decoding messages with the Scream Cipher (ÃA̧ȂÁAǍ), a substitution method where each letter is represented by an 'A' with distinct diacritics

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Scream Cipher (ÃA̧ȂÁAǍ) -

Tag(s) : Substitution Cipher

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Scream Cipher (ÃA̧ȂÁAǍ)

Scream Cipher Decoder

 

Scream Cipher Encoder

 



Answers to Questions (FAQ)

What is Scream Cipher? (Definition)

The Scream Cipher is a substitution cipher proposed by xkcd here in which each letter of the alphabet is replaced by an A with a unique diacritical mark. This method allows a message to be encoded using only variants of the letter A (thus similar to human screams, often represented verbatim by a succession of As: Aaaaaaaa!!).

How to encrypt using Scream cipher?

The principle of encryption is based on a fixed correspondence between each letter of the alphabet A-Z and a diacritical version of A. Each letter is replaced by its corresponding coded A according to the table:

AABȦCDEÁFG
HIJKLĂMǍNÂ
OÅPQRȂSÃTĀUÄ
VÀWȀXYZȺ

Example: SCREAM translates to ÃA̧ȂÁAǍ

The letter A remains unchanged.

How to decrypt Scream cipher?

For decryption, the reverse process of encryption is applied by associating each diacritical A with its original letter in the A-Z alphabet.

Example: A̱A̧ÅA̱Á translates to DCODE

How to recognize a Scream ciphertext? (Identification)

A text encrypted with the Scream cipher contains only A characters adorned with various diacritical marks (umlauts, accents, cedillas, etc.).

Any observation of a sequence of A letters, whether or not they have unusual marks, is a good indicator.

Any reference to horror films (including Scream) or the web comic series XKCD is a clue.

Source code

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NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

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