AES is the encryption algorithm used in WPA2 and uses a particular process, or
mode, within WPA2 to encrypt traffic. This mode is called the Counter-mode (CTR)
Cipher Block Chaining Message Authentication Code Protocol (CMC-MAC) or, adding it
all together, CCMP. CCMP uses a 128-bit key and 128-bit block size (since it is a block
symmetric cipher, as opposed to the streaming RC4 symmetric cipher used in WEP and
WPA), as well as 48-bit initialization vectors (IVs). The larger IV sizes help prevent replay
attacks from being conducted against WPA2
AES is the encryption algorithm used in WPA2 and uses a particular process, or
mode, within WPA2 to encrypt traffic. This mode is called the Counter-mode (CTR)
Cipher Block Chaining Message Authentication Code Protocol (CMC-MAC) or, adding it
all together, CCMP. CCMP uses a 128-bit key and 128-bit block size (since it is a block
symmetric cipher, as opposed to the streaming RC4 symmetric cipher used in WEP and
WPA), as well as 48-bit initialization vectors (IVs). The larger IV sizes help prevent replay
attacks from being conducted against WPA2
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