Generate memorable EFF-style passphrases, random passwords, and 256-bit API tokens via crypto.getRandomValues() with real-time GPU crack-time auditing.
Step-by-Step Client-Side Workflow
1. Hardware Entropy Harvesting: Randomness is drawn directly from your operating system’s cryptographically secure pseudo-random number generator (window.crypto.getRandomValues).
2. Diceware & 256-Bit Token Synthesis: Words and symbols are selected uniformly without modulo bias to construct memorable passphrases or hex API keys.
3. Offline Crack-Time Modeling: Information entropy (bits) is evaluated against a 100-billion-guess/second GPU cluster to estimate real-world brute-force resistance.
Why Use VaultTools Zero-Upload Architecture
Immune to Math.random() Predictability: Never rely on predictable PRNGs. Every character is backed by OS-level cryptographic entropy.
Easy to Type, Impossible to Brute-Force: A 5-word passphrase with a number delivers 80+ bits of entropy while remaining effortless to remember.
100% Offline Strength Auditing: Test the entropy of your existing passwords without typing them into an online form that could log keystrokes.
Frequently Asked Questions
How many bits of entropy makes a password secure in 2026?
For everyday accounts, aim for at least 65–75 bits of entropy. For master password managers, crypto wallets, and production API secrets, 90 to 128+ bits is recommended.