Question 1
Encryption defines the process involved in encoding information such that only the authorized person or computer, with a key, can decode it. This process is based on cryptography, the all-important tool for protecting information on computers and computer systems. Encryption has been used to protect information since time immemorial, being used by the Greek that created ciphers which are codes involving transpositions or substitution of letters and numbers. One of the most common ciphers is Caesar’s cipher who shifted each alphabetical letter to the right or left by a few positions, and the Polybius square, just to mention ...
