Hi,

I had written a broadband dialer for sify (antidialer) some time back.
during this time, sify decided to change its dialer protocol for
unknown reasons and include some cryptography** in it. I wanted to
know if it would be legal to reverse engineer the dialer (not
necessarily disassemble it) or wireshark packets to analyze and try to
write an alternate dialer for the new protocol. I'm asking this for
the following reasons:

1) I am not using the dialer for unauthorized access -- it is simply
an alternative means to login using a valid account. I have to do it
because the linux dialer crashes before or after I login and the
customer care has not been responsive to my complaints so far.
2) There is no EULA for which I have to click through when I use the
Linux based dialer, so reverse engineering it should not be illegal
right?
3) Someone had mentioned once on a forum (indiabroadband.com or
something like that) a while back that it is illegal to "break"
cryptography.

If it is legal then I could go around attempting to understand and
implement what the protocol does.

**It's really some silly xor/reverse with MD5s from what I could
understand so far.


-- 
Siddhesh Poyarekar
http://siddhesh.in
-- 
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