Thanks to every one :-)

Yes, TLS with good set of cihper suites should help.

Regards,
Prakash

On Jul 22, 10:22 pm, Marc-André Laverdière
<marcandre.laverdi...@gmail.com> wrote:
> It looks like TLS with a trust store would be the way to go. Better
> than to roll your own.
>
> Marc-André LAVERDIÈRE
> "Perseverance must finish its work so that you may be mature and
> complete, not lacking anything." -James 1:4
> mlaverd.theunixplace.com/blog
>
>  /"\
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> 2010/7/22 Prakash Rao <prakashrao1...@gmail.com>:
>
>
>
> > Thanks for the response...
>
> > I was just going through various protocol buffer discussion forum
> > topics and found the below one which talks about putting a signature
> > in proto object and do a validation before processing the payload. I
> > believe this is what you guys are referring to when you say "add HMAC
> > to your proto messages". Yes, this is something simple that can be
> > tried out.
>
> >http://groups.google.com/group/protobuf/browse_thread/thread/a3a2742b...
>
> > We have SSL for our http communication and we allow communication from
> > client only if server certificate is imported in the client keystore.
> > I'm just curious to find out best possible ways to avoid my proto
> > object data tampering (in case of man in the middle of attack)
> > especially when server is in public domain (internet).
>
> > Regards,
> > Prakash
>
> > On Jul 22, 9:36 am, Marc-André Laverdière
> > <marcandre.laverdi...@gmail.com> wrote:
> >> Protobuf allows you to build your conceptual protocol the way you want it.
> >> If you want security features on top of it, you can either add it to
> >> your messages, or you can use a secure network layer that does the
> >> work for you. Its your call.
> >> Personally, I'm against reinventing the wheel, so I use protobuf over
> >> TLSv1 with a good set of cipher suites configured :)
>
> >> Marc-André LAVERDIÈRE
> >> "Perseverance must finish its work so that you may be mature and
> >> complete, not lacking anything." -James 1:4
> >> mlaverd.theunixplace.com/blog
>
> >>  /"\
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>
> >> 2010/7/21 Prakash Rao <prakashrao1...@gmail.com>:
>
> >> > Is there a way to add security layer to protocol buffer if I'm writing
> >> > my proto objects to https output stream? In java we have sealed
> >> > objects and we can have signature attached to it to make sure objects
> >> > are not tampered on the receiving end. Is there something similar in
> >> > protocol buffer as well?
>
> >> > I’m just trying understand what all different options that protocol
> >> > buffer provides as far security is concerned when compared to web
> >> > services to make sure data is not tampered. Web services comes with
> >> > good security models (such XML signature, SAML) to make sure data is
> >> > not tampered.
>
> >> > Regards,
> >> > Prakash
>
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