WPA :- wifi protected access was an interim replacement for the WEP ( wired equivalent privacy) , WEP had known vulnerabilities and should not be used. WPA provide interim solution overt the weakness of WEP without their hardware.
Note :- WPA is susceptible to password cracking attack.
WPA2 :- WPA2 is a replacement for WPA, it is using CCMP ( cipher block chaining massage authentication protocol ) . it is always recommended to use WPA2 instead of WPA .
Temporal key integrity protocol is an older encryption used in WPA and CCMP is a new protocol used in WPA2.
One advantage of WPA is that user do not have to upgrade their hardware to use WPA , they can simply upgrade their software and start using WPA.
Note : Later implementation of WPA using AES ( advance encryption standards ) insted of TKIP.
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