CRYPTOGRAPHHY

Confidentiality: consists of privacy, data is only visible for people that have the rights to see it.

Cryptography: consists of writing words in a different way, to have the data cofidentiality.

It is the set of techniques that allows you to encrypt the data:Encrypt and Decrypt:

Encryption consists of modifying the data using cryptography, so other people can't understand it.

Decryption consists of discovering the way that the data has been encrypt of.

Algorithm: steps or patrons that you can follow to decrypt a word or a phrase.

A key: is the number you use in order to encrypt something using algorithms.

WIFI SECURITY

   Wifi protocols(versions):

802.11b= first wifi in the market.

802.11g=second wifi in the market.

802.11n=third wifi in the market. 

802.11ac=fourth wifi in the market.

 What speed is posible to get in each of them?

802.11b= 8 mbps

802.11g= 54 mbps

802.11n= 300 or 600 mbps.

802.11ac= 1`3 gbps

    What do you need to connect to the Internet through Wifi?-       Wireless NIC

-       AP

-       Router

    Wifi SSID (Service Set Identifier)
Wifi security:OPEN

WEP

WPA

WPA2

Internet safety gerard and saul de Saul Vidal Swales