Restioson

general recent conversations

The Side Channel

Mostly randomly generated noise. – crypto.stackexchange.com

Restioson

Feb 19, 2020 18:44

collisions would be BAD, but not fatal or anything. it'd jjust be a little annoying for the users suddenly having their room state be updated next message

Restioson

Feb 19, 2020 18:43

so the worse that happens is some change erroneously is not pulled from another node and that gets corrected later

Restioson

Feb 19, 2020 18:43

@SEJPM it's for data integrity storage

Restioson

Feb 18, 2020 18:25

where x=/=z

Restioson

Feb 18, 2020 18:24

so its ok if H(x, y) = H(y, x) - that's the point :P it'd be an issue if there existed a trivial method to find z so that H(S, z) = H(S, x) though

Restioson

Feb 18, 2020 18:24

i want any given multiset to give one hash

Restioson

Feb 18, 2020 18:24

@Maeher yea thats the point

Restioson

Feb 18, 2020 18:23

i've done a bit of hobby osdev and rust gives youall the tools you need though

Restioson

Feb 18, 2020 18:23

I forget, maybe it's crate?

Restioson

Feb 18, 2020 18:23

@SEJPM no volatile keyword, but volatile reads and writes in ptr module as well as Volatile type i believe that wraps any given T or maybe *mut T

Restioson

Feb 17, 2020 20:22

and like, the real down low stuff like exactly which instructions are most efficient in which cases

Restioson

Feb 17, 2020 20:21

the thing with asm is that you can get rlly close to the metal obviously but 99% of us don't know how to use the metal efficiently

Restioson

Feb 17, 2020 20:18

really?

Restioson

Feb 17, 2020 20:18

i won't

Restioson

Feb 17, 2020 20:17

im rlly unsure of this considering that i basically came up with the implementation after reading a few random papers

Restioson

Feb 17, 2020 20:17

Redox is mostly rust iirc

Restioson

Feb 17, 2020 20:16

maybe should i open a question? just to get more opinions on it?

Restioson

Feb 17, 2020 20:16

hmm

Restioson

Feb 17, 2020 20:14

so i was trying to adapt that to use elliptic curves

Restioson

Feb 17, 2020 20:13

people.csail.mit.edu/devadas/pubs/mhashes.pdf

Restioson

Feb 17, 2020 20:13

i read a paper related to this, let me find it

Restioson

Feb 17, 2020 20:12

i was still looking up that

Restioson

Feb 17, 2020 20:12

Restioson

Feb 17, 2020 20:11

that shouldnt happen on ristretto as far as i can tell because the basepoint =/= the point of inflection and it is a cyclic group

Restioson

Feb 17, 2020 20:11

where you have a cycle introduced in the curve?

Restioson

Feb 17, 2020 20:11

... self-inversion?

Restioson

Feb 17, 2020 20:10

just to use it to compare datasets

Restioson

Feb 17, 2020 20:10

the basic end goal is to get an unordered multiset hash and i thought one could use the ristretto curve + some hash function to do that

Restioson

Feb 17, 2020 20:09

sry i am new to cryptography

Restioson

Feb 17, 2020 20:09

ok i will google that

Restioson

Feb 17, 2020 20:08

Restioson

Feb 17, 2020 20:07

i have some short proof-of-concept code if that would help

Restioson

Feb 17, 2020 20:07

i explained it wrong and you are correct. i compute (sha512(x) mod L) * P where P is the basepoint of the ristretto curve and apply the group operation * of that to (sha512(y) mod L) * P

Restioson

Feb 17, 2020 20:05

let me check actually

Restioson

Feb 17, 2020 20:05

I think

Restioson

Feb 17, 2020 20:05

Yes

Restioson

Feb 17, 2020 20:03

hi :) if i have two scalars for a ristretto curve (integer under mod group order) generated by taking the sha512 hash of some data and i add them (under mod group order), is that operation collision resistant? is there anywhere i can find things to read on that?

Discussion on question by Alexei: Wha…

Imported from a comment discussion on politics.stackexchange.c...

Restioson

Dec 8, 2017 17:16

Maybe this discussion could be moved to a chat?

Electrical Engineering

A place to talk with friends from the EE community about vacuu...

Restioson

Oct 9, 2017 07:57

I was thinking that the stuff in the table was the bare reading from the power head

Restioson

Oct 9, 2017 07:54

sorry I'm really newb with the actual hardware RF side of it :) Thanks for the help. SO basically, they put an attenuator on which -12db from the output, then they measured it, and added 12 back

Restioson

Oct 9, 2017 07:54

oh that makes a lot more senss

Restioson

Oct 9, 2017 07:53

Restioson

Oct 9, 2017 06:44

I just don't know why they needed an attenuator if they were setting the output anyway

Restioson

Oct 9, 2017 06:44

tbh i'm pretty noob

Restioson

Oct 9, 2017 06:25

For some reason, they seem to have added an attenuator? I'm not sure why they did this. Could anyone perhaps help to explain??

Restioson

Oct 9, 2017 06:24

I then looked to see if you could disable/limit the power output, and I found a setTxPower() here airspayce.com/mikem/arduino/RadioHead/classRH__RF95.html - However, they also added a table of set power/observed power (this is where I'm puzzled): i.imgur.com/SJKtEN5.png

Restioson

Oct 9, 2017 06:24

Hey. I am looking to buy a LoRa module (RFM98W, 433mhz), and am trying to figure out whether this exceeds my country's regulations of 100mw ERP on 433mhz or not - it says that it has a 20dbm transmitter, and then a 14dbm amplifier, which (I think) would exceed the power limit.

Discussion between eques and Anoplexian

Imported from a comment discussion on worldbuilding.stackexcha...

Restioson

Sep 30, 2017 09:14

Moved from comments: About the number/numerals - a potential barrier to understanding could be that Alice could be using a different numeric base to Daisuke.

Discussion on question by David: How …

Imported from a comment discussion on ux.stackexchange.com/que...

Restioson

Aug 18, 2017 19:25

This is exactly like DRM - the content is shown in an analogue format to the user, therefore it is impossible to protect it. xkcd.com/129

Discussion between Tim and Restioson

Imported from a comment discussion on security.stackexchange.c...

Restioson

Jun 1, 2017 13:21

they're end to end encrypting... so others can't read :P