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Low 27 Bitcoin

feat(tron): clear sign Approve flow

Public commit record

What the developer wrote

Authored by PrisionMike

57/100 · Thin
feat(tron): clear sign Approve flow

[no changelog]
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
The short version

What changed, and why it matters

This commit improves how Trezor devices display Tron token approval transactions on screen. Previously, only simple transfers were shown clearly; now the device also clearly shows when a user is approving someone else to spend their tokens, including unlimited approvals and revocations. This is a security-hardening change that helps users avoid accidentally signing risky approvals.

Recommended action

No immediate action required. This is a defensive UX improvement. Users benefit from clearer on-device warnings before signing Tron token approvals. Reviewers may want to verify that the new UI strings render correctly in all supported languages and that the `is_revoke` and unlimited-amount detection logic cannot be bypassed by equivalent encodings.

Security signals we found

01

Clear-signing improvement for token approvals

02

Adds explicit handling of unlimited allowance approvals

03

Adds explicit handling of allowance revocation (approve 0)

04

Reuses existing Ethereum-style approval UI strings for Tron

05

No change to signature generation or transaction validation logic

Risk score

Why this scored 27/100

Our methodology →
Potential impact 5/30
Exploitability 3/25
Stealth signal 2/15
Affected reach 5/15
Confidence 8/10
Evidence quality 4/5
Human-validated context

Community notes

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