Posts

Showing posts from September 2, 2010

The differences between Symmetric and Asymmetric Encryption [SECURITY+ CERTIFICATION]

One of the ways to remember something you’re always forgetting to to write it down. It’s one of the reasons I like blogging. I was so caught up in the middle of something I was doing today that when asked what should have been a simple question on the differences between symmetric and asymmetric encryption my mind locked up. So again, repetition is the best way to memorization. Symmetric Encryption Symmetric encryption uses a secret key which can be any set of characters. When that key is applied to the text of a message to change the content in a particular way. This might be as simple as shifting each letter by a number of places in the alphabet. As long as both sender and recipient know the secret key, they can encrypt and decrypt all messages that use this key. So if A=01 and B=02 and so on to Z=26 then 1001191514 becomes JASON.  Obviously this is a very simple example and it would be somewhat easy to figure out. The problem with secret keys of any strength is tryin