Hello M. B., Symmetric ciphers are much less computationally intensive than asymmetric ciphers. So, in a situation where one has to encrypt and decrypt a lot of data quickly (as in the WPA setting) its better to use a symmetric cipher.
-- Rohit Patnaik M.B.Jr. wrote: > Dear dr, > please, let me try to share and elucidate (with you and the list) one > specific and conceptual point about "802.11i" and AES that intrigues > me. > > I don't know if you can answer this, but it is worthy for reflection. > > So, > Rijndael (AES) is a symmetric block cipher. Why WPA2 uses symmetric > cryptography in a communication (which is an asymmetric situation)? > > > Regards, > > > > > On Wed, Aug 26, 2009 at 1:01 PM, Dragos Ruiu<[email protected]> wrote: > >> On 26-Aug-09, at 7:35 AM, Rohit Patnaik wrote: >> >>> Do you have a link to the entire paper by any chance? The abstract >>> interests me, and I'd really like to read the whole thing. >>> >> Should have put this in as someone else already correctly pointed out: >> http://bit.ly/8qwQt >> >> The research team is scheduled to present an implementation of the >> attack at a conference on Sept. 25. >> >> cheers, >> --dr >> >> -- >> World Security Pros. Cutting Edge Training, Tools, and Techniques >> Tokyo, Japan November 4/5 2009 http://pacsec.jp >> Vancouver, Canada March 22-26 http://cansecwest.com >> Amsterdam, Netherlands June http://eusecwest.com >> pgpkey http://dragos.com/ kyxpgp >> >> >> >> >> _______________________________________________ >> Full-Disclosure - We believe in it. >> Charter: http://lists.grok.org.uk/full-disclosure-charter.html >> Hosted and sponsored by Secunia - http://secunia.com/ >> >> > > > > _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
