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Low 26 Bitcoin

support core wallet

Public commit record

What the developer wrote

Authored by ww3512687

28/100 · Opaque
support core wallet
✓ Subject identifies a change! No meaningful explanatory body! Opaque security-relevant change
The short version

What changed, and why it matters

This commit adds support for the Core Wallet in the Keystone 3 firmware. It mainly expands the number of Avalanche X/P-chain derivation paths from one to ten, updates the Rust SDK dependency, and changes how signing requests extract derivation paths and fingerprints. There is no explicit security fix or vulnerability disclosure in the commit message or diff. The changes are feature-oriented, but they touch sensitive code paths (transaction signing, HD path handling, and master-fingerprint checks), so they warrant careful review.

Recommended action

Treat as a normal feature commit but perform a focused security review on: (1) whether the new multi-path signing API correctly binds each signature to its intended path and prevents cross-path signing; (2) whether the source-fingerprint check covers all supplied derivation keypaths or only the first one; (3) whether the SDK bump introduced any parsing or validation changes that affect transaction integrity; (4) whether the expanded AVAX X/P account range (0-9) is fully reflected in UI, export, and verification flows to avoid user confusion or address mismatch.

Security signals we found

01

Change to cryptographic signing API (multiple paths / multiple signatures)

02

Change to HD derivation path validation and selection logic

03

Change to master-fingerprint / source-fingerprint verification

04

Dependency bump of keystone-sdk-rust (ur-registry/ur-parse-lib) without disclosed changelog

05

Removal of local determine_derivation_path logic in favor of paths supplied in sign request

Risk score

Why this scored 26/100

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

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