Bcrypt Work Factor Benchmark
Bcrypt Work Factor Benchmark: Executes password hashing iterations measuring exact millisecond duration via performance.now().
About this bcrypt work factor benchmark
Bcrypt Work Factor Benchmark — browser-based utility.
How this tool works
Implements client-side Bcrypt Work Factor Benchmark operations. Executes password hashing iterations measuring exact millisecond duration via performance.now() specifically designed for a devops engineer benchmarks cpu execution latency of bcrypt cost factors on local browser hardware.
- Binary Buffer Ingestion: Reads plain text strings or binary file byte streams as Uint8Array memory buffers.
- Cryptographic Compression Pipeline: Processes 512-bit or 1024-bit message blocks through round transformation functions and constant tables.
- Hexadecimal / Base64 Formatting: Formats resulting 128-bit, 256-bit, or 512-bit digest states into lowercase hex strings.
- Known-Answer Verification: Validates digest results against published NIST test vectors (e.g. empty-string SHA-256 digest).
Worked example
Scenario: Measure the two permitted low bcrypt costs on the current browser.
Sample input:
Processing: Run bcrypt hashSync once for each accepted cost and measure each run with performance.now.
Illustrative output:
Limits and verification
Supports text and files up to browser memory limits. Clearly marks legacy hash algorithms (MD5, SHA-1) with security advisories recommending against their use in cryptographic signatures or password storage due to known collision attacks.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Enter, paste, or select your input data into the Bcrypt Work Factor Benchmark workspace controls.
- Review available parameter fields, units, formats, or options configured for your task.
- Click the action button or observe immediate live calculations rendered in your browser runtime.
- Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.
Frequently asked questions
What does Bcrypt Benchmark time?+
It parses JSON password and a costs array, keeps numeric costs from 4 through 14, performs bcrypt hashSync for each accepted cost, and returns milliseconds measured by performance.now.
What did the browser fixture verify?+
The czoa-demo fixture with costs 4 and 5 returned two timing rows with those costs and a recommendation. The numeric milliseconds are intentionally not fixed because they depend on the running browser and machine.
How is the recommendation selected?+
It returns the first tested cost reaching 100 milliseconds; if none reaches that threshold, it returns the last tested cost. An empty or invalid costs array falls back to 8, 10 and 12.
Is this a production password policy?+
No. A local timing sample does not establish server load, concurrency, rate limiting, password storage, breach resistance, hardware variation, or a suitable authentication policy.