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Informational 15 Bitcoin

eth: add tests with large data to test streaming

Public commit record

What the developer wrote

Authored by Tomas Vrba

78/100 · Adequate
eth: add tests with large data to test streaming

Adds transactions with large data (about 20% of total txs) to the
sighash go script to unit test the chunking producer

- test sign.rs to test that new streaming mode produces same
signatures as non-streaming
- test that streaming large data produces signatures of expected size

eth: prepare tests for eth sighash streaming

prepares initial unit tests for simple and chunking producer for data
streaming

tests generated by Claude Code
✓ Descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context✓ Mentions testing or verification
The short version

What changed, and why it matters

This commit is purely a test-suite update for the BitBox02 hardware wallet's Ethereum transaction signing. It adds unit tests that verify the new 'streaming' mode for large transaction data produces the same cryptographic signatures as the older non-streaming mode, and updates test data files. There is no change to production firmware code or user-facing behavior, and nothing in the commit suggests a security vulnerability.

Recommended action

No security action required. This is a benign test-only commit. Reviewers may optionally verify the regenerated test vectors are correctly generated by the updated Go scripts and that the new tests pass.

Security signals we found

No strong security signals were identified.

Risk score

Why this scored 15/100

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

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