Tue Mar 7 18:02:25 CET 2006
i wrote a little "benchmark" in erlang, using the crypto:aes_cbc. but it
happens, that crypto:aes_cbc produces 2 different results with the same
input and the benchmark fails. i wanted to compare the power of
distributed computing against one single pc. even the power of
multi-cpu-systems could been measured by starting multiple client-nodes.
can somebody help please ;-)
the code is available at
for use please take the following steps:
1. ensure that your erlang dist supports aes and you have the
2. edit the values "talona" in the code to the name of your machine,
talona was mine... (should be 4 times)
3. start 3 consoles, go to the dir containing the db3.erl
erl -sname server on the first,
erl -sname keyserver on 2nd and
erl -sname client on 3rd
5. run c(db3). on all of them
6. on run
db3:start_server(). on run
db3:start_client(). and on run
7. finally, to start the whole mess type db3:start().
the used key is set to
so the server is supposed to stop after 16*256 steps. the output proofs
that the function gets the right values (if you interrupt by pressing
ctrl+c while the client tests the key), but crypto:aes is producing the
wrong result. i have looked over the program the last 2 days and i cant
find a mistake in my program. can anyone test this and tell me wether im
wrong or there is a bug?
this is not intended to break any cipher!! its just for benchmarking and
comparing systems! i know it costs a lot of computing time to generate
the whole output. but the output is just for debugging. the final
version will just consist of a result output.
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