message authentication code
in [Matlab]
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From: John D'Errico on 27 Jun 2010 10:05 "hamza Muhammad" <k3wl_racer(a)hotmail.com> wrote in message <i07kl1$t8a$1(a)fred.mathworks.com>... > "John D'Errico" <woodchips(a)rochester.rr.com> wrote in message <hu5f0k$lnj$1(a)fred.mathworks.com>... > > "hamza Muhammad" <k3wl_racer(a)hotmail.com> wrote in message <hu5bnk$feg$1(a)fred.mathworks.com>... > > > Can anyone please give me a matlab code for message authentication code? > > > > Certainly. Here is a message authentication code, written > > specially for you. > > > > questdlg('Please authenticate message','Authentication','Authentic','Not authentic','Authentic') > > > > HTH, > > John > > Hi John...I cannot find the code which you have shared...Can you kindly guide me please... regards...Hamza It is a simple part of matlab. help questdlg John
From: us on 27 Jun 2010 10:14 "hamza Muhammad" <k3wl_racer(a)hotmail.com> wrote in message <i07ksh$eht$1(a)fred.mathworks.com>... > "us " <us(a)neurol.unizh.ch> wrote in message <hu5hbk$pq3$1(a)fred.mathworks.com>... > > "hamza Muhammad" <k3wl_racer(a)hotmail.com> wrote in message <hu5bnk$feg$1(a)fred.mathworks.com>... > > > Can anyone please give me a matlab code for message authentication code? > > > > what have YOU done so far to solve YOUR particular problem... > > > > us > > Hi us! i have encrypted an image and i am transmitting it across the network using TCP/IP protocol...now i need a message authentication code for authentication of data.. can You please help me? I would prefer a matlab code implementing MD5. > Regards...Hamza again: what have YOU done so far to solve YOUR particular problem... us
From: Jan Simon on 27 Jun 2010 10:23 Dear Hamza! > Hi us! i have encrypted an image and i am transmitting it across the network using TCP/IP protocol...now i need a message authentication code for authentication of data.. can You please help me? I would prefer a matlab code implementing MD5. Simply search in the FileExchange. Of course you can use MD5 to calculate a hash value for the image. But if you plan to send the image and the MD5 sum through the net, be aware that it is possible to modify *both* of them. I think, you need a HMAC method. Ask Google for details. Jan
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