typed password is not deterministic (lowercase / uppercase change)

[monperrus]

I notice that when I ask for a password with the app, some letters are randomly changed to lowercase / upercase.

On a password with 20 characters, after 26 attempts, I get 4 variations of the password.

Notably, it seems that not all character positions are equally impacted, only the 6th, 7th, 8th and 12th characters have been switched at least once.

Version 1.0.2
OS: Linux

[TamtamHero]

I failed to reproduce it on a Nano X/Linux, which device are you using ?
This is when typing a registered password through "Type password" ?

[monperrus]

Nano S and Ubuntu 22.04

This is when typing a registered password through "Type password" ?

yes Thanks!

[monperrus]

My current workaround is to use a password with only lower case.

This is a critical limitation

[lpascal-ledger]

Are you doing your attempts on the same interface, or do you change your keyboard layout?
I've highlighted in issue #41 some unexpected behaviors while doing a few tests. In particular, with Qwerty International, I did have case changes between my console and my browser (though it remained stable on a particular interface).

[monperrus]

hi @lpascal-ledger I'm not changing the keyboard layout. the random lowercase / uppercase happens with the same ledger and the same layout. thanks!

[lpascal-ledger]

@monperrus thanks for the precision, and the report.
Can't promise you it'll be fixed shortly, but we plan to commit significant time into fixing / improving this app and some other non-cryptocoin apps (such as SSH, PGP, etc.).

[monperrus]

excellent, thanks a lot.

[lpascal-ledger]

Investing this, I encountered this issue but only in my day-to-day console (basic terminator without much config).
I could not reproduce on other any application (browser, default Ubuntu terminal, text editor, ...).
The USB trace seems correct. The MAJ flag is correctly put on every uppercase character.

On which application did you have this problem @monperrus?

[monperrus]

super cool you can reproduce. I experienced the problem in Firefox.

[lpascal-ledger]

Keeping this open until I got a feedback on the latest fix pushed.

[monperrus]

that's great to fix this important bug, thanks a lot. given the non deterministic nature of the bug, I won't be able to validate the fix.