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  2. Substitution cipher - Wikipedia

    en.wikipedia.org/wiki/Substitution_cipher

    At the end of every season 1 episode of the cartoon series Gravity Falls, during the credit roll, there is one of three simple substitution ciphers: A -3 Caesar cipher (hinted by "3 letters back" at the end of the opening sequence), an Atbash cipher, or a letter-to-number simple substitution cipher. The season 1 finale encodes a message with ...

  3. Caesar cipher - Wikipedia

    en.wikipedia.org/wiki/Caesar_cipher

    In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code, or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.

  4. Trifid cipher - Wikipedia

    en.wikipedia.org/wiki/Trifid_cipher

    The trifid cipher is a classical cipher invented by Félix Delastelle and described in 1902. [1] Extending the principles of Delastelle's earlier bifid cipher, it combines the techniques of fractionation and transposition to achieve a certain amount of confusion and diffusion: each letter of the ciphertext depends on three letters of the plaintext and up to three letters of the key.

  5. Phonetic reversal - Wikipedia

    en.wikipedia.org/wiki/Phonetic_reversal

    However, if one reverses it, it says, "Three Letters Back", which is a clue to the ending credits code. The whisper is changed to "Switch the A with Z" in Double Dipper, "26 Letters" in Bottomless Pit, "Key Vigenere" in Scary-Oke, and "Not What He Seems" in the episode with this title (while still using the Vigenere cipher ).

  6. Bifid cipher - Wikipedia

    en.wikipedia.org/wiki/Bifid_cipher

    Then divided up into pairs again, and the pairs turned back into letters using the square: 44 33 35 32 43 13 55 31 23 25 U A E O L W R I N S In this way, each ciphertext character depends on two plaintext characters, so the bifid is a digraphic cipher , like the Playfair cipher .

  7. List of Gravity Falls episodes - Wikipedia

    en.wikipedia.org/wiki/List_of_Gravity_Falls_episodes

    Disney commissioned Hirsch to create an eleven-minute low-budget animated pilot [2] for Gravity Falls which he later described as "a short version of Tourist Trapped". [9] On December 9, 2010, it was announced that Disney Channel had greenlit Gravity Falls for a full series based on the pilot, which was originally slated to premiere in spring ...

  8. Cipher Hunt - Wikipedia

    en.wikipedia.org/wiki/Cipher_Hunt

    The treasure chest contained a wide array of loot, such as plastic coins and gems, Russian and Japanese currency, a copy of the book Gravity Falls: Journal 3 which was signed and contained a special drawing by Hirsch himself, a black light flashlight, a plastic crown, a sash that says "Mayor of Gravity Falls," a music box with Bill Cipher's eye ...

  9. Not What He Seems - Wikipedia

    en.wikipedia.org/wiki/Not_What_He_Seems

    "Not What He Seems" is the eleventh episode of the second season of the American animated television series Gravity Falls, which was created by Alex Hirsch, and the 31st episode overall. The episode was written by Shion Takeuchi, Josh Weinstein, Jeff Rowe, Matt Chapman, and Hirsch, and directed by