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1:07 AM
TIL "If the file /sys/firmware/acpi/tables/MSDM exists (it's read-only to root), there's probably a Windows key embedded in there"
if your Linux installation have that file, you have a Windows license too
 
 
7 hours later…
8:15 AM
1
A: VPN - Tor: can VPN provider see the data?

forestBetween your Tor client and the guard node, the communications are encrypted with three layers of AES128. The first layer is a key shared between you and the guard node. The second layer is a key shared between you and the middle node. The third layer is a key shared between you and the exit node...

forest does some "simple math" here, but I'm dumb enough to not undertand. Can someone explain where the 2^128*2 comes from and how it equals 2^130?
 
 
1 hour later…
9:44 AM
I would like to have an explanation too... I believe 2^128*4 would be 2^130...
 
 
2 hours later…
11:24 AM
@nobody (2^128)*2 = 2^129
It's a simple mistake, nothing more
 
Where does (2^128)*2 come from in the first place?
There are three 128 bit keys
So that's equivalent to a 384 bit key
If you take in account the meet in the middle attack
then its 256 bits
 
I think that's a question for the sidechannel
I have a weird feeling in my throat. I think I got the coof
 
coof == cough?
 
the rona, my dude
With only a 98% chance of survival, I'm as good as dead
 
RIP
 
11:38 AM
I can already see the funeral service held in the DMZ
"Here lies MechMK1. He may not always have been the nicest person, and he had some very objectional political views, crude humor and generally lowered the quality of discussion in the DMZ for years... the sentence ends here."
 
11:52 AM
Atleast you get a funeral service here. I wouldn't even get that.
 
Makes sense though
No funeral service if nobody dies.
 
Wait, that means... if I die because of covid, then everybody can stop worrying about covid, because nobody was killed by it
 
Exactly
Nobody got infected, nobody died. Pandemic over.
 
whelp! where do I hide?
 
Luckily, nobody can hide from the virus
 
12:14 PM
@nobody exponents don't work that way. If you multiply two numbers you add their exponents
 
J--
Morning.
Afternoon, nevermind.
What is time anyway?
 
@ConorMancone Isn't that what I did? (2^128)*(2^128)*(2^128)=2^384
 
@J-- it's 15 past something...
 
It is a time
 
Take 2^3 for example (aka 8). 2*8=16, aka 2^1 * 2^3 = 2^4
When you multiply numbers you add their exponents
(sorry, I am thinking out loud)
Ah yes: so, if you had 2 keys with 128 bits of entropy, this is not the same thing as a single key with 256 bits of entropy
2 keys with 128 bits is "double" a single 128 but key, so you have 2^1 * 2^128 = 2 ^ 129 bits
 
12:23 PM
I knew something like that was going on
But fuck I am so tired
 
J--
15 past tired.
:D
 
You could ask me what color the sky was and I'd say "Whatever, green or such"
 
@ConorMancone How so? The number of different possible key combinations are still 2^256
 
(2^128)*(2^128) doesn't mean that you have 2 keys with 128 bits: it would mean that you have 2^128 keys with 2^128 bits!
 
J--
Today I am bypassing ASLR.
Fun.
 
12:24 PM
@nobody no, a 256 bit key is not just double a 128 but key - it is far, far, far stronger
 
@ConorMancone Pretty sure you're wrong here. 3DES has 112 bit strength after the meet in the middle attack
If you were right, it would be only 58 bits
 
true
fuck, I'm retarded
 
@MechMK1 your chance of survival is actually only like 99.99%, assuming you are under 60 and not in a high risk category
It's been fun dude, I'll miss you!
 
J--
That's not what Tom said :D
I would miss Mech dearly, however.
 
The DMZ would be dead without him
 
J--
12:28 PM
Literally.
I wouldn't even be bothered to post.
Unless forest was here. Then I might.
 
@nobody try it with small numbers. I have 2 keys with 4 bits each. That gives me 8 bits of entropy total
 
J--
No offense to anyone else I'm just...
Lazy.
Anti social.
Mechs biggest fan.
:D
 
@ConorMancone Exactly, the bits add up
 
J--
In other news... I've switched to US keyboard layout forever.
The UK layout is genuinely fucking trash.
 
12:29 PM
So two keys with 128 bits each is 256 bits of entropy
 
Other than the enter key
 
J--
I've tried to convince myself it is good, but it literally requires extra keys on the keyboard.
 
2^2 * 2^2 = 2^4, which is 16. Wrong answer. 2 * 2^2 = 8, right answer
 
I love the Uk enter key
 
J--
Ah yes.
Me too, Journeyman.
 
12:30 PM
@J-- the thing that bugs me the most about the UK keyboard is the transposition of the @ and ' keys
 
J--
But other than that... It is terrible.
Oh, I actually like that!
But what I don't like is needing to use alt to type |
I use | a lot.
 
@nobody 2 keys with 128 bits is 129 bits of entropy. A 256 but key isn't just 2 128 but keys
 
ow yeah
that would be a pain for piping
 
J--
Same goes for \ you know how hard it is to use \ on uk if you have a 60% keyboard?
 
J--
12:31 PM
you need an entire new key on the board!!
stupid design. so im using US :D
 
I just downsized to a tenkeyless
from an OC Razer Blackwidow Ultimate/classic that's so old the keys are blue, and the cherry blues are silent linear switches :D
 
J--
Thing is, a lot of people tell me "just use a bigger keyboard" - but I've almost always had 60s.
Moving from a 60 to an 80 and losing all that desk space is just sad...
 
@ConorMancone By this logic two keys of 4 bits gives one key of 5 bits
Instead we have one key of 8 bits
 
J--
Of course there is a method, get a UK designed PCB with a smaller left shift and then you have one extra 1u for a \| key
But meh, us layout is fine anyways
 
I use the stock thinkpad t490 keyboard...
 
12:33 PM
@J-- eh, keyboard preferences are personal
 
or the t430 on the gaming notebook
 
@ThoriumBR filthy casual :D
(I kid I kid)
 
stock t430...
 
J--
I'll be honest Thorium, the reason I got into keyboards was the reason I am interested in other things, I have an obsession with collecting random shit.
I just like collecting nonsense
But I had to channel it into something more worthwhile so somewhere down that line that was keyboards
else id be buying fucking rocks and shit
 
I am toying with the idea of upgrading it to the most powerful i7 it supports, change the heat pipe, and a shiny SSD... but it would cost a new notebook
and it needs a new battery too, and shipping batteries are understandingly expensive...
 
12:37 PM
lol
@J-- same keyboard for 10 years
 
J--
:D to be fair, my previous keyboard I did use for a really long time, few years, I had others I could use but I really liked it.
Think I am going to build something with a super clicky switch next
I want to do like a hacker themed build with box jades or something
that would be super cool but the key caps i wanted for it all sold through
 
@nobody I'm having trouble finding you a good reference but note that the brute force times are not double when you go from 128 to 256. They are exponentially higher:
 
J--
So I am HOPING there are extras when shipping comes
like who doesnt want these, wait.
IM SO MAD i missed it
the metal artisan keycap as well the terminal prompt
SO COOL
 
@ConorMancone I asked in the Side Channel, lets wait and see the reply
 
@J-- my pc building is heavily that
 
J--
12:44 PM
You mean like hacker themed?
 
me finding an outlet for stuff I want to do
 
J--
Oh right.
Yeah, I really like building computers too.
 
If I was in the uk, I'd probably be one of those boffins with a machine shop building stuff like functional mecha
 
J--
Heh :D
 
So I build a PC every 5-6 years
and upgrade it and my random utility boxen in between
 
J--
1:05 PM
What do you do with the old ones?
Just keep the parts?
That's what I do.
I have a bunch of computers and computer stuff laying around because of that. I still have a gtx 660 somewhere :D
But its cool, I like it. Reminds me of when I used to play video games 15 hours+ a day lol
on my amd fx8350
:D
that thing would be at like 80c constantly it was bonkers
 
@J-- my mom or dad typically make me throw em out
so I tend to rehome them
my last PC is still around though :D
 
1:44 PM
@ConorMancone Just 99.99% survival rate? I'm basically a dead man walking
 
 
8 hours later…
9:35 PM
Umm... Is it normal for phone apps to not check certificate validity?
 

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