Browser-Based SHA-1 Password Cracker Demo with Optimized Salted and Unsalted Lookups

Short summary

A browser-based SHA-1 password cracker demo using the Web Crypto API, with optimizations for both salted and unsalted lookups. Unsalted mode precomputes a hash-to-password map for O(1) lookups; salted mode iterates salts outer and passwords inner with early exit to avoid building the full cross-product in memory. The post includes key JavaScript implementation excerpts for the hashing, caching, and UI wiring.

• •Browser-based SHA-1 cracker demo using Web Crypto API with salted and unsalted modes
• •Unsalted mode uses precomputed hash-to-password map for O(1) lookups
• •Salted mode iterates with early exit to avoid O(S×N) memory overhead

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