Hey All, Thank you so much for quick replies. Looks like translation to C/C++ is the only robust option. Do you think there exists any ready-made R to C translator?
Thanks -- Vaishali Vaishali Paithankar Sadaphal Tata Consultancy Services Mailto: vaishali.sadap...@tcs.com Website: http://www.tcs.com ____________________________________________ Experience certainty. IT Services Business Solutions Outsourcing ____________________________________________ From: Spencer Graves <spencer.gra...@prodsyse.com> To: Barry Rowlingson <b.rowling...@lancaster.ac.uk> Cc: Vaishali Sadaphal <vaishali.sadap...@tcs.com>, r-help@r-project.org Date: 07/04/2011 08:42 PM Subject: Re: [R] Protecting R code Hello: On 7/4/2011 7:41 AM, Barry Rowlingson wrote: > On Mon, Jul 4, 2011 at 8:47 AM, Vaishali Sadaphal > <vaishali.sadap...@tcs.com> wrote: >> Hi All, >> >> I need to give my R code to my client to use. I would like to protect the >> logic/algorithms that have been coded in R. This means that I would not >> like anyone to be able to read the code. > At some point the R code has to be run. Which means it has to be > read by an interpreter that can handle R code. Which means, unless you > rewrite the interpreter, the R code must exist as such. > > Even if you could compile R into C code into machine code and > distribute a .exe file, its still possible in theory to > reverse-engineer it and get something like the original back - the > original logic if not the original names of the variables and > functions. > > You could rewrite the interpreter to only run encrypted, signed code > that requires a decryption key, but you still have to give the user > the decryption key at some point in order to get the plaintext code. > Again, its an obfuscation problem of hiding the key somewhere, and > hence is going to fail. > > It all depends on how much expense you want to go to in order to make > the expense of circumventing your solution more than its worth. Tell > me how much that is, and I will tell you the solution. > > For total security[1], you need to run the code on servers YOU > control, and only give access via a network API. You can do this with > RServe or any of the HTTP-based systems like Rapache. An organization I know that encrypted R code started with making it available only on their servers. This was maybe four years ago. I'm not sure what they do now, but I think they have since lost their major proponents of R internally and have probably translated all the code they wanted to sell into a compiled language in a way that didn't require R at all. Spencer > > Barry > > [1] Except of course servers can be hacked or socially-engineered > into. For total security, disconnect your machine from the network and > from any power supply. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
