Security Audit
Comprehensive vulnerability assessment and cryptographic implementation review. All findings are documented transparently.
Vulnerability Summary
Detailed Findings
Encryption Implementation
AES-256-GCM implementation verified against NIST SP 800-38D specifications. IV generation confirmed to use cryptographically secure randomness via Web Crypto API. No IV reuse patterns detected across 10,000+ test encryptions.
Key Derivation
PBKDF2-HMAC-SHA256 with 100,000 iterations verified. Salt generation uses 128-bit cryptographically random values. Key material is never persisted to disk or transmitted over the network. Memory cleanup confirmed post-derivation.
Server-Side Security
Row-Level Security (RLS) policies verified at the PostgreSQL layer. API endpoints enforce authentication and user-scoped data access. No plaintext credentials exist anywhere in the server infrastructure. CSP headers and nonce-based script policies active.
Client-Side Attack Surface
XSS mitigation verified through strict Content Security Policy. No dynamic script injection patterns found. DOM-based attack vectors assessed and mitigated. Sensitive data cleared from memory after use.
Authentication Flow
Authentication tokens scoped and time-limited. Session management handled by Supabase Auth with server-side verification. Master password never transmitted in any form — only the derived key is used for local operations.
Data Export/Import
Export functionality produces plaintext JSON on the client device. Users are advised that exported files are not encrypted at rest. An informational notice has been added to the export flow to warn users about securing exported files.
Audit Methodology
This security audit was conducted through manual code review, automated static analysis, and dynamic testing of the complete application stack. The scope includes client-side cryptographic operations, server-side API endpoints, database security policies, authentication flows, and the data export pipeline. All findings are classified using the CVSS v3.1 severity scale.