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Showing posts with the label Ancient cryptography

Bitcoin before 2009

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2000 BC Abacus was often called the first computer. It was invented to help with calculation. 1900 BC Egyptian hieroglyphs. 1500 BC Clay tablets from Mesopotamia 1000 BC Spartan scytale and use of Helots to send hidden messages. 50 BC Caesarian code 200 Mlecchita vikalpa 800 Arab frequency analysis 1404 The Voynich manuscript 1652 Pascal build the first calculation machine which could add and subtract numbers up to 6 ciphers. 1786 Baron Gripenstierna offered his invention the cipher machine to the Swedish king Gustav 3. A secretary would read the text on the front, by turning the wheel of the machine.The coded text and unexplained row of numbers, could only be read on the back side and then written down by another secretary. The receiver read the text by turning the numbers on his own machine. 1801 French weaver Joseph Jacquard made punch cards with holes for his loom. The holes told the loom how to weave patterns in the cloth. These holes were an example of early computer code 1840 Ch...

The Spartans

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Name: The Spartans Achievements: The Spartans, renowned for their military prowess, are credited with the invention of the scytale cipher around 500 BCE. This rudimentary yet ingenious cryptographic device comprised a cylindrical rod, typically made of wood, around which a strip of parchment or leather was spirally wound. The sender would inscribe their message linearly along the length of the wrapped strip. Upon unwinding, the message would appear as a seemingly random sequence of letters. For the intended recipient to decipher the communication, a scytale of identical diameter was required. By wrapping the received strip around their own scytale, the letters would realign, revealing the original text. The security of this transposition cipher relied on the precise correspondence in the circumference of the sender's and receiver's scytales. Furthermore, the Spartans employed an alternative, albeit more protracted, method of clandestine communication. This technique invo...

Julius Caesar

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Name: Gaius Julius Caesar Born July 100 BC Rome Died 15 March 44 BC (aged 55) Rome Achievements: Born into a wealthy and noble family, Julius Caesar was an ambitious general and politician who rose to power in the midst of a civil war. In 61 BC he became governor of Spain and he later captured Gaul, but in 44 BC after he declared himself dictator, a group of 60 senators conspired against Caesar and on March 15 he was publicly stabbed to death in the Senate. Innented the first cryptographic code. Caesar replaced every letter with the letter 3 places forward in the alphabet. The Caesar code became the dominant form of encryption for centuries. The code was broken by Arab scholars n the 9th century when they invented frequency analysis studying religious scripts to find out which scripts that originated from the time where the prophet Mohammed lived.