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LPIC-1/CompTIA Linux+ Certification All-in-One Exam Guide (Exams LPIC-1/LX0-101 & LX0-102) by Robb Tracy

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How Encryption Works

Hearken back with me, if you will, to your elementary school days. Did you ever pass notes to your friends? I know that in the modern era of mobile devices and text messaging this may seem archaic; but when I was a kid, notes were a vital means of communication at school. After all, you had important business to conduct, right?

If your school was like mine, these extracurricular forms of communication were strictly forbidden in class. If a teacher intercepted a poorly handled note pass, you could be sure it would be read in front of the class, which could be a fate worse than death (especially if the note contained information about who currently likes whom).

To prevent this, my buddies and I developed codes to encrypt our ...

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