Re: [Tails-dev] Randomize full MAC address feature option in welcome screen

[Ethan Krasner via Tails-dev]

>phone oui vendors resources to form oui list:

It would make more sense for full mac randomization to copy how android does it 
wouldn't it?

https://source.android.com/docs/core/connect/wifi-mac-randomization-behavior

>The MAC randomization feature randomizes the address by setting the locally 
>administered bit to 1, and the unicast bit to 0. The other 46 bits are 
>randomized.

https://en.wikipedia.org/wiki/File:MAC-48_Address.svg

So to implement that like the Android feature does:

0X:00:00:00:00:00

^

X would have to be 26ae

reasoning is XX:00:00:00:00:00 would have to equal an 8 digit binary ending in 
10

xx10

^ determines the locally administered bit which has to be 1

^ determines the unicast which has to be 0

https://richardatkin.com/post/2022/01/14/MAC-Address-Randomisation.html

If you use this calculator u can see that 26ae are the only possible outcomes 
for this bit to end in 10

0X:00:00:00:00:00

^ the first part can equal anything between 0-9 and a-f as it doesn’t change 
the binary ending in 10

X = 2 or 6 or a or e [26ae]

https://www.compscilib.com/calculate/mac-address-to-binary?

The first part could be anything [0-9a-f] but the the second part would have to 
be [26ae] then the rest (10) randomized.

[0-9a-f][26ae]:00:00:00:00:00

echo $(/usr/bin/tr -dc a-f0-9 https://proton.me/) secure email.___
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[Tails-dev] Randomize full MAC address feature option in welcome screen

[Astral Projection]

Feature for full mac randomization in the welcome screen users can 
select if they choose so (not set as the default spoofing option.)


Something like these lines added to /usr/local/lib/tails-spoof-mac

oui=list of phone oui venders
nic=/usr/bin/tr -dc a-f0-9 's/../:&/2g'

spoof_full_mac() {
local msg
set +e
msg="$(macchanger -m "$oui:nic" 2>&1)"
ret="${?}"
set -e
if [ "${ret}" != 0 ]; then
log "macchanger failed for NIC ${1}, returned ${ret} and said: 
${msg}"

return 1
fi
}

macchanger command for this feature would be

macchanger -m "$oui:nic"

phone oui vendors resources to form oui list:
https://standards.ieee.org/products-programs/regauth/
https://www.wireshark.org/download/automated/data/manuf

(look for these type of vendors)

Google

Huawei

Apple, Inc.

Samsung Electronics Co.,Ltd
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