The need for secret communications arose very early in civilization. It progressed due to the “intellectual arms race” ...

A simple method of encryption is a technique known as the Caesar cipher. The cipher works by ... the one found at the original letter's position in the alphabet plus or minus the value of the ...

A simple method of encryption requires the use of a technique known as the Caesar cipher. The cipher works ... the one found at the original letter's position in the alphabet plus the value ...