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Informational 20 Bitcoin

feat(core): passphrase shown alignment

TZce266730 View source ↗
Public commit record

What the developer wrote

Authored by obrusvit

80/100 · Strong
feat(core): passphrase shown alignment

- this commit makes the "reveal passphrase" functionality show the
latest written characters in case the whole passphrase does not fit the
screen
- as of recently, passphrases can be 128 characters long
- affects layouts Bolt, Delizia, Eckhart

[no changelog]
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides detailed explanatory context
The short version

What changed, and why it matters

This commit is a user-interface polish change for Trezor hardware wallets. When a user chooses to reveal the passphrase they are typing, and that passphrase is very long (up to 128 characters), the device now scrolls the text so the most recently typed characters remain visible instead of running off the screen. It is a usability fix, not a security bug fix, and does not change how passphrases are stored, processed, or protected.

Recommended action

No security action required. Treat as a normal UI/usability improvement. Reviewers may optionally verify the new UI snapshots reflect the intended end-visible behavior for long passphrases.

Security signals we found

01

No changes to secret handling, cryptography, memory management, or trust boundaries

02

Change is purely visual/rendering behavior for an already user-visible field

03

No bounds-checking, parsing, or authentication logic is altered

04

Test fixture hashes changed only for UI snapshot tests of the passphrase reveal screen

Risk score

Why this scored 20/100

Our methodology →
Potential impact 2/30
Exploitability 0/25
Stealth signal 0/15
Affected reach 5/15
Confidence 9/10
Evidence quality 4/5
Human-validated context

Community notes

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