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Cryptography
Part 1 of Paper
....r people are capable of decoding the message back into its original form. This is usually done by using an encryption algorithm and a decryption algorithm (these two are often the same) and very often a secret key. Some of the early cryptographic systems did not use a key but instead kept the algorithm itself secret. T.... Part 2 of Paper
....l object, which was applied on the message to get the decrypted version of it. In 50 Bc., one of the most simple cryptographic algorithms ever used was the one called the Caesar cipher, that was used by Julius Caesar to send messages to his generals. It consisted simply of switching each letter with the letter that was 3 letters further down the alphabet.
For example "Stephen" would become "Vwhskhq". To decrypt the message, the receivers would simply subtract 3 letters from each letter. This al.... |
| Number of words: 3143 - Approximate pages: 12 |
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