SecurePass Generator & Vault

Generate secure passwords with entropy mixing, check breach status via HIBP, and store them in an AES-256 encrypted local vault.

Store Listing Metadata Extension Name: Secure Password Generator & Encrypted Vault Short Description: Generate unguessable passwords with custom entropy, verify data breach exposure via HIBP, and secure credentials within a local AES-256 encrypted vault. Category: Productivity / Workflow & Tools Detailed Description Establish absolute control over your digital security posture with Secure Password Generator & Encrypted Vault—a zero-knowledge, privacy-first browser extension engineered to deliver enterprise-grade credential protection directly on your local machine. Whether generating immutable cryptographic keys, auditing credentials against known data breaches, or storing sensitive access records offline, this tool ensures maximum security without compromising user privacy. Core Feature Architecture 1. Entropy-Mixed Cryptographic Password Generation Surpass standard pseudo-random number generation through advanced seed derivation. Custom Entropy Mixing: Input random keystrokes into the entropy field to combine user-provided seed data with high-grade browser cryptographic randomness (crypto.getRandomValues) via bitwise XOR operations. Granular Length & Parameter Controls: Configure key lengths from 8 to 64 characters utilizing preset standards (12, 16, 24, 32). Strict Character Set Filtering: Select or exclude Uppercase, Lowercase, Numerical digits, and Symbol sets to comply with complex organizational password policies. Ambiguous Character Exclusions: Automatically filter out visually indistinct characters (0, O, l, 1, I, |) to prevent authentication errors. Memory-Hardened Implementation: Utilizes typed arrays (Uint8Array) with immediate buffer zeroization to minimize sensitive data persistence on the V8 memory heap. 2. Integrated Breach Detection (Have I Been Pwned API) Proactively assess whether generated or existing credentials appear in historical data compromises. k-Anonymity Model: Queries the Have I Been Pwned database using cryptographic hash prefix segmentation, ensuring plaintext credentials never leave your local environment. Vulnerability Assessment: Instantly identify compromised keys to remediate security exposure proactively. 3. AES-256 Encrypted Local Vault Secure sensitive credentials, access keys, and notes within an isolated local data store. Client-Side Encryption: Secured via industry-standard AES-256 encryption protocols derived from a user-managed master passphrase. Zero-Knowledge Architecture: Decryption keys and vault records reside exclusively within local browser storage (chrome.storage.local). Operates entirely independent of external cloud infrastructure or telemetry tracking. Session Management: Incorporates automated vault locking mechanisms and manual security timeouts. 4. Advanced Real-Time Strength Analyzer Evaluate credentials dynamically through a multi-factor scoring algorithm. Analyzes entropy bit depth, character diversity ratios, length compliance, and pattern penalties (detecting sequential runs, repeating strings, and keyboard spatial walks). Security & Privacy Commitments Offline-First Design: All core cryptographic operations, vault management, and analysis execute locally within the extension environment. Manifest V3 Compliance: Built upon the latest Google Chrome extension framework with strictly audited, minimal permission scopes. Zero Telemetry: Operates without user tracking, analytical logging, or external data transmission. Target Audience Information Security Professionals & Developers: Practitioners requiring robust, mathematically sound generation and secure local secret storage. Privacy-Conscious Organizations & Individuals: Users demanding absolute local ownership and zero-knowledge architecture for sensitive credentials.