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[INTRODUCTION] Polybius Square was originally conceived by the Greek historian Polybius in the 2nd century B.C., and is one of the simplest cipher in cryptography.
[ALGORITHM] The polybius Square is a table that translates letters into numbers. To give a small level of the encryption, the table used in Polybius Square (see the attached photo) can be randomized and shared with the recipient. In order to fit the 26 letters of the alphabet into the 25 spots created by the table, the letters "I" and "J" are usually combined.
[ENCRYPTION] To encipher a message, you replace each letter with the row and column in which it appears. For example, the letter A will be encrypted as 11; letter B will be encrypted as 12.
[DECRYPTION] To decipher a message, you find the letter that intersects the specified row and column.
[GAME] Now, let's try what you've learnt. Try to decrypt this. PM Swordcane for your answers.
