Hi guys how are you? I hope you are fine in this topic we will talk about the Cryptography this field is a huge field we will split this field into parts of topics let's start. In this part of the topic, we will talk about a simple algorithm in the Cryptography field it's Ceaser Cipher this algorithm is one of the old algorithms and the Ceaser king was use it in encrypt the messages, let's see how we can use this encryption. Encryption : we will imagen that we want to encrypt this word Hello to encrypt this word we should have the encryption key (k) let's imagine gen that it's equal 3 so k=3 see this 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z we will found that every letter equal number we will use this equation CipherText = E(k,p) = (p+k) mod 26 p is the letter place and k is the encryption & decryption key and 26 it's the number of English letters so this let...
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