From the course: CompTIA Network+ (N10-009) Cert Prep

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Symmetric encryption

Symmetric encryption

From the course: CompTIA Network+ (N10-009) Cert Prep

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Symmetric encryption

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- I don't think you'd meet too many people out there anymore who don't appreciate that sometimes data needs to be encrypted. Now we do encryption all over the place in the computer world, everywhere from encrypting hard drives to encrypting email, to encrypting video. There's a lot of kinds of encryption going on. Now what I want to do at this point in the game is make sure we understand what encryption really means. So to do this, let's go ahead and start off with a string of text. So how about, I don't know, ilovemikemeyersnetworkplus. How does that look? Now, what we're going to do here is we're going to encrypt this text. Now to encrypt it, I'm going to start off with an oldie goldie, and anybody who's ever messed with a secret decoder ring knows about the Caesar Cipher, where basically we just take a ring, and there's the alphabet on one side, the alphabet on the other, and we turn it and then that increments each value. So what I'm going to do for starters here is I'm going to…

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