Keys
We commonly use the term “key” in day-to-day life. One definition of a key is a tool to open a locked door, where something is kept hidden from prying eyes. In the data world, the term “key” has a similar meaning. A key is used to protect information in various ways. For instance, a data key performs a similar function as a password used to protect a user account or a PIN (personal identification number) used with your ATM card to access your bank account. Normally, the longer the key, the more secure the protection it can provide; however, this is not always the case. The following three sections will discuss how keys are used and the two types of keying algorithms: symmetric and asymmetric.
Key Usage
In network security, keys serve a ...
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