I think, you may use port forwarding via adb. This link might be a start http://qtcstation.com/2011/03/connecting-android-to-the-pc-over-usb/
Am Mittwoch, 3. Oktober 2012 12:33:09 UTC+2 schrieb Jasper Horn: > > Hi Al, > > You make an interesting point. I was intending to use the keys for > authentication, and the phone is playing a server role here, meaning that > only the computer would need a private key. Once it has been generated, the > public key could indeed be sent over wifi safely. You do still have the two > problems left, selecting a phone and getting the key unmodified, but those > are solvable indeed. > > However, I have been thinking about this and I feel it might be necessary > to extend the service beyond the original idea of only using it over wifi > and allow use over the internet as well. The idea would still be the same: > having a phone app and a computer application communicate (possibly through > a server). Here it might be necessary to encrypt all data sent and thus we > may need to have a key pair on both ends. However, that's not really what > changes the situation. What changes the situation is that the two problems > above get so much bigger. The data will now be sent over a much less secure > connection and there are many more wrong phones you might connect to. I am > not saying that isn't solvable, but this makes me want to at least offer > USB setup as an option. > It is possible to just connect over usb like that? > > On Monday, October 1, 2012 11:22:24 AM UTC+2, al wrote: >> >> Getting cryptography right is non-trivial. So take this with caution. >> >> As I understand it, you want to generate a key pair on each side and >> exchange the public keys. That can be done easily via wifi too since you >> only exchange _public_ keys. The problem is to be sure you got the right >> ones (i.e. that they have not been faked by e.g. a man in the middle >> attack). To ensure this, you might e.g. calculate a cryptographic hash of >> the public keys (to shorten the data that has to be compared) and display >> them on both sides. The user may then compare the hashes. >> >> Am Samstag, 29. September 2012 15:21:51 UTC+2 schrieb Jasper Horn: >>> >>> I have an idea for an app that will both have a component that runs on >>> the computer of the user and a component that runs on the phone. The idea >>> will be that the two will communicate over wifi. >>> >>> To make this secure, I want to set up a public/private key pair on the >>> computer and the phone. In order to do this in a user-friendly way, I want >>> to do so automatically over usb. However, in exploring how much of what I >>> want is actually possible on android, I have been unable to find out how to >>> have an app communicate over usb to a program on the computer. >>> >>> Technically, it would be similar to using the computer as a USB >>> accessory, but I doubt it would actually be similar enough to make this >>> work. I have also read that it might be possible using ADB port forwarding, >>> but this doesn't really look like it would make it more user-friendly for >>> end users. Finally, I suppose I could solve the problems by only using the >>> file system and mounting it, storing the public key in a file on the >>> s-card, but it's not really the ease of use that I am looking for. >>> >>> Is there a way of communicating between an application running on a pc >>> and an app running on an android device that I have missed? >>> Is there a mistake in my current understanding of the possibilities? >>> >> -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
