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Informational 24 Bitcoin

feat(core): add chunkify param to TronSignTx

Public commit record

What the developer wrote

Authored by obrusvit

57/100 · Thin
feat(core): add chunkify param to TronSignTx
✓ 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 adds a new optional 'chunkify' setting to Tron transaction signing on Trezor hardware wallets. When enabled, addresses are shown on the device screen in small groups of characters (chunks of 4) instead of one long string, making them easier for users to read and verify. The change also makes chunking disabled by default for Tron sign-transaction screens, whereas some Tron screens previously always chunked addresses. There is no direct security vulnerability in the diff, but any change to how addresses are displayed can subtly affect how well users detect address-rewriting attacks.

Recommended action

Treat as a normal feature/usability patch. Review whether flipping the default from chunked to non-chunked display for existing Tron sign-tx flows is intentional and consistent with other coins, since address chunking is a recognized anti-phishing aid. No immediate remediation is required, but ensure UI regression tests cover both chunkify=true and chunkify=false paths.

Security signals we found

01

UI display parameter change for address confirmation

02

Default value flipped from chunkify=True to chunkify=False in Tron layout helpers

03

New optional protobuf field added to TronSignTx

04

Host library now sets chunkify on the TronSignTx message

05

No cryptographic, parsing, or authorization logic changed

Risk score

Why this scored 24/100

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

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