Comments on: Did Nexus S and iPhone5 NFC implementations forget about TrustZone? http://armdevices.net/2011/01/31/did-nexus-s-and-iphone5-nfc-implementations-forget-about-trustzone/ Blog on ARM Powered® devices Thu, 24 May 2012 07:05:00 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Charbax http://armdevices.net/2011/01/31/did-nexus-s-and-iphone5-nfc-implementations-forget-about-trustzone/comment-page-1/#comment-9781 Charbax Thu, 16 Jun 2011 14:52:00 +0000 http://armdevices.net/?p=4314#comment-9781 Yes that openID is similar to that idea of not having to use passwords on any site anymore. I wouldn't mind Google taking care of holding all my passwords and not having to ask every website to integrate with open id, just the web browser taking care of that, but cloud based, and authenticated securely with a TrustZone powered pin code. Where I see TrustZone be useful in NFC is so that the screen where you type in the pin code, to authenticate any payment above a certain threshold for example if you want to transfer $5000 to some person through a simple NFC tap, all that you then need to do is authenticate with your pin code on your phone and instantly the money is transfered. Or for buying anything, you'd want that extra level of hardware based security as just waving unprotected phones in front of NFC readers is not enough, what if someone steals your phone. As far as I understand Google Wallet uses a hardware based security chip by NXP which may take care of this but perhaps ARM TrustZone is better, with a secure separate OS popping up for any secure authentication, also which I imagine could popup on your phone automatically every time you want to login to any website using your Laptops web browser. Yes that openID is similar to that idea of not having to use passwords on any site anymore. I wouldn’t mind Google taking care of holding all my passwords and not having to ask every website to integrate with open id, just the web browser taking care of that, but cloud based, and authenticated securely with a TrustZone powered pin code.

Where I see TrustZone be useful in NFC is so that the screen where you type in the pin code, to authenticate any payment above a certain threshold for example if you want to transfer $5000 to some person through a simple NFC tap, all that you then need to do is authenticate with your pin code on your phone and instantly the money is transfered. Or for buying anything, you’d want that extra level of hardware based security as just waving unprotected phones in front of NFC readers is not enough, what if someone steals your phone.

As far as I understand Google Wallet uses a hardware based security chip by NXP which may take care of this but perhaps ARM TrustZone is better, with a secure separate OS popping up for any secure authentication, also which I imagine could popup on your phone automatically every time you want to login to any website using your Laptops web browser.

]]> By: Thomas Woolford http://armdevices.net/2011/01/31/did-nexus-s-and-iphone5-nfc-implementations-forget-about-trustzone/comment-page-1/#comment-9779 Thomas Woolford Thu, 16 Jun 2011 14:21:00 +0000 http://armdevices.net/?p=4314#comment-9779 NFC is not great for this sort of thing. You would have to sit your phone on top of the device you want to auth. It seems what you are looking for is something more akin to openID+2Factor. (which used to post this reply) NFC is not great for this sort of thing. You would have to sit your phone on top of the device you want to auth. It seems what you are looking for is something more akin to openID+2Factor. (which used to post this reply)

]]> By: Thomas Woolford http://armdevices.net/2011/01/31/did-nexus-s-and-iphone5-nfc-implementations-forget-about-trustzone/comment-page-1/#comment-9780 Thomas Woolford Thu, 16 Jun 2011 14:21:00 +0000 http://armdevices.net/?p=4314#comment-9780 NFC is not great for this sort of thing. You would have to sit your phone on top of the device you want to auth. It seems what you are looking for is something more akin to openID+2Factor. (which used to post this reply) NFC is not great for this sort of thing. You would have to sit your phone on top of the device you want to auth. It seems what you are looking for is something more akin to openID+2Factor. (which used to post this reply)

]]> By: Anonymous http://armdevices.net/2011/01/31/did-nexus-s-and-iphone5-nfc-implementations-forget-about-trustzone/comment-page-1/#comment-7867 Anonymous Wed, 02 Feb 2011 10:35:00 +0000 http://armdevices.net/?p=4314#comment-7867 yes my friend .. this is great.. they really forget this.. because it's harder to implement .. 2 OS ..i know that the second OS for the NFC payment must be something like RealTimeOS or something QNX makes..with is hard to implement due to various components used .. for example the SuperAmoled on Nexus S .. so.. they just said ..NO .. why bother investing time&money.. their loss . i was always asking myself when looking at pdf files of ARM chips what the TrustZone mean..or what is it good for..now we know . btw remember my post on MSM7227 .. it's not 45nm (insert sad face here) but it's 65nm , this is from their pdf : http://avs234.net/docs/cpu/qualcomm/80-VM299-21_MSM7227_CHIPSET_TRAINING_INTRODUCTIONS_AND_CHIPSET_OVERVIEW.pdf PS : don't know why engadget won't ask this ( your ) question .. because NFC payment is indeed the future! PS2 : you are really funny in this clip.. (because you don't understand the tech fully ) yes my friend .. this is great.. they really forget this.. because it’s harder to implement .. 2 OS ..i know that the second OS for the NFC payment must be something like RealTimeOS or something QNX makes..with is hard to implement due to various components used .. for example the SuperAmoled on Nexus S .. so.. they just said ..NO .. why bother investing time&money.. their loss .
i was always asking myself when looking at pdf files of ARM chips what the TrustZone mean..or what is it good for..now we know .
btw remember my post on MSM7227 .. it’s not 45nm (insert sad face here) but it’s 65nm , this is from their pdf : http://avs234.net/docs/cpu/qualcomm/80-VM299-21_MSM7227_CHIPSET_TRAINING_INTRODUCTIONS_AND_CHIPSET_OVERVIEW.pdf
PS : don’t know why engadget won’t ask this ( your ) question .. because NFC payment is indeed the future!
PS2 : you are really funny in this clip.. (because you don’t understand the tech fully )

]]> By: Anonymous http://armdevices.net/2011/01/31/did-nexus-s-and-iphone5-nfc-implementations-forget-about-trustzone/comment-page-1/#comment-7822 Anonymous Mon, 31 Jan 2011 13:53:00 +0000 http://armdevices.net/?p=4314#comment-7822 Nokia is the most driving company in the nfc-forum as the standardization organisation is behind the shortwave radio standard NFC for making mobile phones for payment.Nokia,Google och Apple will make the nfc to a world standard for mobile phones for payment.In combination med rfid-tags on goods it will be possible to make shops and larger warehouses not so needed of people who is working there. Nokia is the most driving company in the nfc-forum as the standardization organisation is behind the shortwave radio standard NFC for making mobile phones for payment.Nokia,Google och Apple will make the nfc to a world standard for mobile phones for payment.In combination med rfid-tags on goods it will be possible to make shops and larger warehouses not so needed of people who is working there.

]]>