IRC log of #maemo for Tuesday, 2017-09-12

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freemangordon_merlin1991: ping11:43
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DocScrutinizer05freemangordon: ping14:33
DocScrutinizer05>>To use AES on N900 you need to flash special boot loader.<<14:36
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freemangordon_DocScrutinizer05: pong14:44
DocScrutinizer05you know this crypto NOLO?14:44
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DocScrutinizer05good :-)14:45
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DocScrutinizer05should CSSU... ?14:45
freemangordon_it enables AES IP in the L2 firewall, iirc14:45
freemangordon_re cssu - there is not much use of that AES, it is slower than doing it on MPU14:46
freemangordon_it makes sense if we do some mobile payments or such, which we don't :)14:47
DocScrutinizer05but it's a coproc, right? so it could run concurrently to "normal" tasks, e.g. for disk encryption14:48
freemangordon_iirc somebody tried it, and there is no gain, on the contrary14:48
freemangordon_yes, it is coproc14:48
freemangordon_but you do supervisor call, iirc, with all the nasty contexts switches etc14:49
DocScrutinizer05I see14:49
freemangordon_there should be a thread on TMO with the results14:50
DocScrutinizer05does the NOLO itself reveal something, at least. EG when comparing it to default xloader/nolo?14:50
DocScrutinizer05I mean, maybe we got a second signature, cracking would be more than twice as fast with two than with just one signature - in theory ;-D14:52
DocScrutinizer05and maybe this is BS I pulled right outa my read14:52
DocScrutinizer05rear even14:53
freemangordon_you mean 2^127 years instead of 2^128? :p14:53
DocScrutinizer05yes, this sort of thing ;-P14:53
DocScrutinizer05I'm still totally unclear about signatires of xloader in GP SoC14:54
DocScrutinizer05does GP also have a L2 FW?14:55
DocScrutinizer05I'd assume they build the very same chip, incl all IP, and just change the xloader and signature14:56
DocScrutinizer05resp L2 config14:56
DocScrutinizer05a mere guess14:56
freemangordon_iirc, yes, there is L2 firewall on gp devices14:57
DocScrutinizer05and the L2 config is completely done in xloader, or would GP and HS have different ROMBL (apart from obviously different signatures/keys)?14:58
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DocScrutinizer05iirc the omapedia about bootloader said you need to sign xloader for GP too (they don't even cover HS devices there)14:59
DocScrutinizer05~listvalues omapedia15:00
infobotFactoid search of 'omapedia' by value returned no results.15:00
freemangordon_sure GP xloader needs to be signed15:01
DocScrutinizer05~listvalues omappedia15:01
infobotFactoid search of 'omappedia' by value returned no results.15:01
freemangordon_but it is not a problem as the keys are known15:01
freemangordon_though I don;t remember signing xloader for BB back then15:02
freemangordon_though it could be that I just forgot15:03
DocScrutinizer05>>Note: If you are using an HS (High Security) OMAP device, an extra step is required. First, build x-load.bin using the steps above. Then, download the MShield signing tool and use the commands below. Contact your TI representative to get access to this tool.<<  o.O15:04
DocScrutinizer05now who's at home in darknet? ;-) find that tool15:06
DocScrutinizer05though... prolly Nokia had their own keys15:06
DocScrutinizer05~#maemo boot is
infobotokay, DocScrutinizer0515:08
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bencohxloader is signed on n900?15:27
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DocScrutinizer05I *think* yes15:36
DocScrutinizer05the question rather is if it *needs* to be signed, or if a HS device would behave exactly like a GP device when yiu use a GP (unsigend) xloader15:37
DocScrutinizer05this basically boils down to the question if GP and HS SoCs share same ROMBL (or if the ROMBL maybe has a check if there's a HS key or not and acts differently when there is)15:40
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DocScrutinizer05>>It's also worth noting the TI did not technically disable TrustZone. Instead, the bootrom code transitions the processor into the Normal world prior to switching execution to U-boot. So it's actually using TrustZone to move to the Normal world, but then doesn't provide a mechanism for moving back to the Secure world<<
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DocScrutinizer05>>Yes, things have changed considerable to the positive after 5 years :) << 2017-06-2916:01
infobotrumour has it, trust is safe, or
DocScrutinizer05this whole trustzone stuff is as intangible as... No docs at all16:11
DocScrutinizer05and I still don't buy it that there's any benefit from it for end users that couldn't get achieved as well (and actually always been) by mere decent implementation of classical OS-based permission handling16:13
DocScrutinizer05as soon as you hand the signing tools to unwashed public, there's no visible benefit from trusted computing at all16:15
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DocScrutinizer05a completely different topic: FSF RYF16:54
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DocScrutinizer05from  "From:"" <> Re: [DNG] Purism Librem and disabling Intel ME: it can be done [ Re: TALOS 2 - The Libre Owner Controlled POWER9 Workstation/Server ]  2017-09-08 Fri 06:22"16:55
DocScrutinizer05>> Full documentation and HDL's will be available for all components besides the onboard broadcom nics which currently require a firmware blob as there are no open source non-intel gigabit NIC's - but the FSF says that this minor detail doesn't prevent it from receiving RYF certification as they are behind the POWER-IOMMU and as such are not capable of doing anything malicious.<<16:56
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DocScrutinizer05I wonder how they can do this for that hardware, but then consider Neo900 doing basically same as sufficient reason to deny RYF16:57
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DocScrutinizer05we also have no open source WLAN/BT solution available and whatever that IOMMU it's not better than a mere SDIO hw interface16:59
DocScrutinizer05and I don't think I want to even start about our modem sandbox solution that's definitely way beyond anything IOMMU17:01
DocScrutinizer05anybody FSF around to comment?17:01
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infobothmm... deb2dsc is on
Palifreemangordon ↑↑↑18:43
Wizzupjesus. only on pastebin? :D18:44
freemangordonPali: thanks18:45
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freemangordonPali: (and the others) how it sounds "Oroshi" as a codename for that maemo-devuan frankenstein?18:58
Wizzupwe had some codenames, but not project names19:00
Wizzupe.g. 'kawai'19:00
freemangordonWizzup: nokia used to name releases after winds19:00
Wizzupok. I am going to be afk for a bit.19:00
KotCzarnyis there a name for 'wind of change' ?19:01
Wizzupneed food19:01
freemangordonKotCzarny: no idea19:01
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KotCzarnyor wind of hope19:01
freemangordonKotCzarny: I found ^^^ at wikipedia, feel free to suggest another one if you need symbolics. I coose it because it sounds pretty much ok and simple19:02
freemangordonKona and Leste sound ok as well19:04
KotCzarnyyeah, it should come after 'h'19:04
KotCzarnyChinook, Diablo, Fremantle, Harmattan19:05
freemangordonMeltemi ;)19:05
KotCzarnyBora before chinook19:05
freemangordonnad Bora19:05
KotCzarnyLoo ? ;)19:05
freemangordonhmm, maybe Kona is better19:05
KotCzarnyKhamsin isnt bad either19:06
freemangordonno, Loo doesn;t sound tasty :D19:06
KotCzarnyanyway, all winds starting with K on that page sound cool19:06
freemangordonI like Kona more, it is shorter but still sounds good19:07
freemangordonok, if no objections in the next couple of hours, then it will be Lona :)19:07
KotCzarnymore names19:08
KotCzarnywilly-willy ?19:08
drathirLuna mmm....19:31
drathirignore that... ^^19:34
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sixwheeledbeastI recall liking "Ostria" A warm southerly wind on the Bulgarian coast :)19:54
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freemangordonsixwheeledbeast: ah, I remember I told you there is no such word in Bulgarian, back then :)21:12
DocScrutinizer05freemangordon: ^^^21:13
DocScrutinizer05please rate severety for maemo21:14
freemangordonDocScrutinizer05: I'm reading through it21:14
DocScrutinizer05stack overflow in bluetooth.ko?21:14
DocScrutinizer05they pitched it well for maximum publicity with minimum help for experts to actually investigate21:20
DocScrutinizer05at least a few random CVE are mentioned21:20
freemangordonDocScrutinizer05: All Linux devices from version 3.3-rc1 (released in October 2011) are  affected by the remote code execution vulnerability (CVE-2017-1000251).21:21
freemangordonso this does not affect n90021:22
freemangordonthe other one affects us, I guess21:22
DocScrutinizer05:-) at least21:22
freemangordonAll Linux devices running BlueZ are affected by the information leak vulnerability (CVE-2017-1000250).21:22
DocScrutinizer05please share URLs to genuine CVE database21:23
DocScrutinizer05I have a hard time finding it right now21:23
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freemangordonI don't have urls for those, I read what is on Armis Labs page21:24
freemangordongoogling leadds to some fedora and redhat pages21:24
DocScrutinizer05I fvrown at the latter one21:24
DocScrutinizer05there are multiple massively different Bluez implementations21:24
freemangordonwhere is bluez upstream?21:25
DocScrutinizer05next to PA?21:26
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DocScrutinizer05sixwheeledbeast: ta21:35
DocScrutinizer05  I guess was the one I looked for21:36
DocScrutinizer05err, or nearby, anyway MITRE21:37
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DocScrutinizer05iips sorry21:58
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