"Cryptography"

INTRODUCTION CRYPTOGRAPHY the science of the enciphering and deciphering of centres in sequestered encipher or cipher cryptography is use everywhere it protects coin transfers and credit card numbers employ over the internet but its main purpose is to keep secret documents take the stand from foreign governments TERMINOLOGY CRYPTOGRAPHY the science of the enciphering and deciphering of messages in secret code or cipher. PLAINTEXT the original message before encryption or subsequently decryption CIPHERTEXT The encrypted form of the PLAINTEXT ENCRYPTION The fulfil of converting the PLAINTEXT into a CIPHER. DECRYPTION The process of converting the CIPHER butt into PLAINTEXT. secret composition The science of recovering info from ciphers without knowledge of the key. CRYPTOSYSTEM a strategy for encrypting information. KEY The secret information known only to the sender and the liquidator which is apply to encrypt and decrypt the message taradiddle cryptology has been used to conceal information in writing since writing was send-off developed, Egyptians are the first knowN to used CRYPTOGRAPHY. Early Grecians also used cryptology, they enwrapped a raise of cloth around a baton called a scytale and wrote the message on it. When it was unwrapped it looked like decorations and was worn as a robe by a servant and delivered to the receiver. When it was wrapped once more around a scytale the message was easily read.

Another classical Polybius invented the Polybius checkerboard which was a 5 x 5 football field containing all the letters of the alphabet, each letter was convert ed into daemon numbers such as A becomes 11! - 1 2 3 4 5 1 A B C D E 2 F G H I/J K 3 L M N O P 4 Q R S T U 5 V W X Y Z ex. CAR is 131142 later the the nineteenth C. cryptodevices were invented they... If you want to get a full essay, magnitude it on our website: BestEssayCheap.com

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