Estimate key expansion rounds and verification duration across Bcrypt cost factors.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Select a cost factor between 4 and 18.
Review total iterations (2^costFactor) and estimated latency.
Verify recommended cost for user authentication APIs.
OWASP recommends a minimum cost of 10-12, targeting ~250ms per password hash verification.
Each increment doubles the computation time and resistance against brute-force attacks.
Zero-egress companion tools in the Security & Network suite
Measure cryptographic randomness, Shannon entropy (0-8 bits/byte), Chi-square test, and byte distributions.
Brute-force all 256 single-byte XOR keys with automated English frequency & chi-squared scoring.
Audit CSP, HSTS, X-Frame-Options, and security headers with OWASP grading (A+ to F).
Compare memory hardness, GPU ASIC resistance, and security parameters across KDF standards.
