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Informational 19 Bitcoin

feat(core/eckhart): add label keyboard layout

Public commit record

What the developer wrote

Authored by Lukas Bielesch

72/100 · Adequate
feat(core/eckhart): add label keyboard layout

- utilize all passphrase input parameters
- add label changing device menu action
[no changelog]
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
The short version

What changed, and why it matters

This commit adds a new on-device screen for changing the device's name (label) on the upcoming Trezor 'Eckhart' model. It also makes the passphrase input code more flexible by allowing the caller to specify the prompt text and maximum length, and it wires up a new 'Device name' menu item. There is no obvious security bug in the diff, but it is a large feature patch touching keyboard input, menu navigation, and device settings, so it carries normal implementation risks.

Recommended action

Treat as a normal feature commit. No immediate security response is warranted from the diff alone. Recommend standard QA validation of the new label keyboard (buffer bounds, max-length enforcement, empty-label confirmation, prefill handling) and verification that `apply_settings` is only reachable through authenticated UI interaction.

Security signals we found

01

New user input surface added (label keyboard) with max-length and empty-label handling

02

Passphrase keyboard max length changed from a hard-coded constant to a runtime parameter

03

Device settings mutation path added: menu result -> request_string -> apply_settings

04

Prefill value is accepted for the label keyboard and passed into a TextBox

05

Large feature patch (+1056/-140) across 33 files increases review surface area

Risk score

Why this scored 19/100

Our methodology →
Potential impact 2/30
Exploitability 2/25
Stealth signal 1/15
Affected reach 3/15
Confidence 8/10
Evidence quality 3/5
Human-validated context

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