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Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...
Quran code. The term Quran code (also known as Code 19) refers to the claim that the Quranic text contains a hidden mathematically complex code. Advocates think that the code represents a mathematical proof of the divine authorship of the Quran, however this claim has not been validated by any independent mathematical or scientific institute.
X. Y. Z. The tap code, sometimes called the knock code, is a way to encode text messages on a letter-by-letter basis in a very simple way. The message is transmitted using a series of tap sounds, hence its name. [1] The tap code has been commonly used by prisoners to communicate with each other. The method of communicating is usually by tapping ...
The Tetragrammaton in Phoenician (12th century BCE to 150 BCE), Paleo-Hebrew (10th century BCE to 135 CE), and square Hebrew (3rd century BCE to present) scripts. The Tetragrammaton (⫽ ˌ t ɛ t r ə ˈ ɡ r æ m ə t ɒ n ⫽ TET-rə-GRAM-ə-ton; from Ancient Greek τετραγράμματον '[consisting of] four letters'), or the Tetragram, is the four-letter Hebrew theonym יהוה ...
Hidden Words. The Hidden Words ( Kalimát-i-Maknúnih, Arabic: کلمات مكنونة, Persian: کلمات مکنونه) is a book written by Baháʼu'lláh, the founder of the Baháʼí Faith, around 1858. He composed it while walking along the banks of the Tigris river during his exile in Baghdad. The book is written partly in Arabic and ...
In medieval France, the language of the birds ( la langue des oiseaux) was a secret language of the Troubadours, connected with the Tarot, allegedly based on puns and symbolism drawn from homophony, e. g. an inn called au lion d'or ("the Golden Lion") is allegedly "code" for au lit on dort "in the bed one sleeps". [11]
The pigpen cipher (alternatively referred to as the masonic cipher, Freemason's cipher, Rosicrucian cipher, Napoleon cipher, and tic-tac-toe cipher) [2] [3] is a geometric simple substitution cipher, which exchanges letters for symbols which are fragments of a grid. The example key shows one way the letters can be assigned to the grid.
The Aztec or Nahuatl script is a pre-Columbian writing system that combines ideographic writing with Nahuatl specific phonetic logograms and syllabic signs [1] which was used in central Mexico by the Nahua people in the Epiclassic and Post-classic periods. [2] It was originally thought that its use was reserved for elites, however, the ...