Linked by Thom Holwerda on Fri 23rd Sep 2011 22:22 UTC, submitted by kragil
The story about how secure boot for Windows 8, part of UEFI, will hinder the use of non-signed binaries and operating systems, like Linux, has registered at Redmond as well. The company posted about it on the Building Windows 8 blog - but didn't take any of the worries away. In fact, Red Hat's Matthew Garrett, who originally broke this story, has some more information - worst of which is that Red Hat has received confirmation from hardware vendors that some of them will not allow you to disable secure boot.
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RE[6]: Bootloader anyone ?
by Neolander on Mon 26th Sep 2011 16:59
in reply to "RE[5]: Bootloader anyone ?"
Member since:2010-03-08
From UEFI spec 2.3.1, Section 27.5 "Firmware/OS Key Exchange: creating trust relationships", there is only a single "Platform Key", which the "platform owner" (= OEM, I guess) uses to sign authorized bootable code. Once an OS is booted, it can add extra "Key Exchange Keys", which it entrusts, to the public key database.
PS : Speaking of EFI, am I the only one annoyed by the way it mandates use of Microsoft's executable formats for loadable binaries ?
Edited 2011-09-26 17:14 UTC
RE[7]: Bootloader anyone ?
by Alfman on Mon 26th Sep 2011 17:32
in reply to "RE[6]: Bootloader anyone ?"
Member since:2011-01-28
Neolander,
Thank you for the info. From what I understand though, the KEKs are just intermediate keys for use by the operating system (for example, to maintain blacklists which cannot be tampered with by the user). In particular, the KEKs need to be signed by the PK and are merely extending it's chain of trust rather than establishing an alternate chain of trust.
http://lwn.net/Articles/447381/
"Before a PK is loaded into the firmware, UEFI is considered to be in setup mode, which allows anyone to write a PK to the firmware. Writing the PK switches the firmware into user mode. Once in user mode, PKs and KEKs can only be written if they are signed using the private portion of the PK, though KEKs can be freely written during setup mode. Essentially, the PK is meant to authenticate the platform owner, while the KEKs are used to authenticate other components, like operating systems."
So I guess the answer to my stated question is yes, there are multiple keys. But the answer to what I was actually thinking is no, there will be no support for multiple authorities.
RE[6]: Bootloader anyone ?
by lemur2 on Mon 26th Sep 2011 23:10
in reply to "RE[5]: Bootloader anyone ?"
Member since:2007-02-17
lemur2, "The reason why I said that 'that the keys will be stored in secure storage on the motherboard', plural of keys, is that as far as I know UEFI Secure boot can handle multiple different keys." Where did you learn this? I can't find any information saying that multiple keys (hardcoded or not) will be supported?
http://mjg59.dreamwidth.org/5552.html
"The UEFI secure boot protocol is part of recent UEFI specification releases. It permits one or more signing keys to be installed into a system firmware. Once enabled, secure boot prevents executables or drivers from being loaded unless they're signed by one of these keys. Another set of keys (Pkek) permits communication between an OS and the firmware. An OS with a Pkek matching that installed in the firmware may add additional keys to the whitelist. Alternatively, it may add keys to a blacklist. Binaries signed with a blacklisted key will not load.
There is no centralised signing authority for these UEFI keys. If a vendor key is installed on a machine, the only way to get code signed with that key is to get the vendor to perform the signing. A machine may have several keys installed, but if you are unable to get any of them to sign your binary then it won't be installable."
News
Linked by Thom Holwerda on 06/19/13 23:02 UTC, submitted by M.Onty
"Microsoft has sensationally abandoned its controversial plans to restrict the sharing of XBox One games, and has also removed daily online authentication requirements for its forthcoming console", reports The Guardian. They had no choice. Still a good move.
Linked by Thom Holwerda on 06/19/13 22:28 UTC
"A snippet of code in the Steam digital distribution platform has revealed that Valve may be planning to let users easily share their games with friends in the future. The Verge has verified the code's authenticity, which was originally spotted by a member of the NeoGAF gaming forum; the code references a 'shared game library' and a notification that would alert a user when their games are currently in use by a borrower." This would change the, uh, game.
Linked by Thom Holwerda on 06/18/13 22:33 UTC
Official Apple statement on PRISM and privacy: "Regardless of the circumstances, our Legal team conducts an evaluation of each request and, only if appropriate, we retrieve and deliver the narrowest possible set of information to the authorities. In fact, from time to time when we see inconsistencies or inaccuracies in a request, we will refuse to fulfill it." This is basically Apple re-publishing their earlier statement in a more official manner. You either believe it, or you don't.
Linked by Anonymous on 06/18/13 22:26 UTC
The open source Contiki operating system and its commercial Thingsquare distribution are making strides towards the connected home. According to a Computerworld article, a new LED light bulb manufacturer is putting small computers into their light bulbs. Each computer runs the Contiki OS, which gives each bulb an IP address and allows them to be controlled with a smartphone application. To connect the bulbs to the application, the bulbs use both Wi-Fi and the much lower power IEEE 802.15.4 mesh technology.
Linked by Thom Holwerda on 06/18/13 22:25 UTC
"Google asked the secretive Foreign Intelligence Surveillance Court on Tuesday to ease long-standing gag orders over data requests it makes, arguing that the company has a constitutional right to speak about information it's forced to give the government. The legal filing, which cites the First Amendment's guarantee of free speech, is the latest move by the California-based tech giant to protect its reputation in the aftermath of news reports about sweeping National Security Agency surveillance of Internet traffic." Draining the ditch after the cow has drowned in it.
Linked by Thom Holwerda on 06/18/13 17:45 UTC
"I can't find one person who has been using the Nexus 7 for an extended period of time, and hasn't seen a massive downgrade in performance. Just what kind of downgrade are we talking here? I cannot pick up my Nexus 7 without experiencing problems like a lag of ten seconds, or more, just to rotate the display; touches refusing to acknowledged; stuttering notification panel actions; and unresponsive apps." Fully and utterly agreed. My Nexus 7 was blazing-fast and awesome for a few months, and at some point, it just started sucking. Just like that. I've tried loads of ROMs, and nothing helps.
Linked by Thom Holwerda on 06/18/13 17:32 UTC, submitted by poundsmack
A new release of the hobby operating system MenuetOS! The release notes are a bit non-descript, but you'll have to take what you can get: "updates and improvements (picview, httpc, ehci, ...)".
Linked by Thom Holwerda on 06/17/13 17:58 UTC
"The Internet is one of the most transformative technologies of our lifetimes. But for 2 out of every 3 people on earth, a fast, affordable Internet connection is still out of reach. And this is far from being a solved problem. There are many terrestrial challenges to Internet connectivity - jungles, archipelagos, mountains. There are also major cost challenges. Right now, for example, in most of the countries in the southern hemisphere, the cost of an Internet connection is more than a month's income. Solving these problems isn't simply a question of time: it requires looking at the problem of access from new angles. So today we're unveiling our latest moonshot from Google[x]: balloon-powered Internet access." Insane.
Linked by Thom Holwerda on 06/17/13 17:52 UTC
"MineAssemble is a tiny bootable Minecraft clone written partly in x86 assembly. I made it first and foremost because a university assignment required me to implement a game in assembly for a computer systems course. Because I had never implemented anything more complex than a 'Hello World' bootloader before, I decided I wanted to learn about writing my own kernel code at the same time. Note that the goal of this project was not to write highly efficient hand-optimized assembly code, but rather to have fun and write code that balances readability and speed. This is primarily accomplished by proper commenting and consistent code structuring." Just cool.
Linked by Thom Holwerda on 06/14/13 21:03 UTC
Jon Rubinstein, former CEO of Palm: "Well, I'm not sure I would have sold the company to HP. That's for sure. Talk about a waste. Not that I had any choice because when you sell a company you don't get to decide that. Obviously, the board and shareholders decide that. If we had known they were just going to shut it down and never really give it a chance to flourish, what would have been the point of selling the company? I think the deal we had with Verizon really hurt us, but who knew that at the time? These things are all hindsight."More News »
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Member since:
2011-01-28
lemur2,
"The reason why I said that 'that the keys will be stored in secure storage on the motherboard', plural of keys, is that as far as I know UEFI Secure boot can handle multiple different keys."
Where did you learn this? I can't find any information saying that multiple keys (hardcoded or not) will be supported?