Tools tagged "hash"

Paste a bcrypt-format password hash (`$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy` style) and see the four parts: algorithm version (`2a` / `2b` / `2y` / `2x`), cost (2^N Blowfish rounds), salt (22-char base64), and hash (31-char base64). The cost row shows the exponential workload (cost=10 → 2^10 = 1024 expanded rounds, cost=12 → 4×, cost=14 → 16×) and a rough wall-clock estimate on a 2026-era server (~100 ms at cost=10, ~400 ms at cost=12, ~1.6 s at cost=14) — useful when deciding whether to raise the cost on a legacy system. Each algorithm variant (`2a` from 1999, `2x` bug-compat, `2y` patched, `2b` recommended by OpenBSD) is explained in its own card. Nothing is uploaded. This tool only parses — it does not compute hashes, so it cannot recover the original password.

Compute CRC-8, CRC-16 (CCITT-FALSE), CRC-16 (Modbus), CRC-32 (ISO-HDLC, ZIP/Ethernet) and CRC-32C (Castagnoli, SCTP/iSCSI) for the same input. CRC variants are the workhorse error-detecting checksums in binary protocols — ZIP/PNG/gzip frame trailers, Modbus industrial-control buses, SCTP/iSCSI, embedded firmware updates. They are not cryptographic hashes but they are tiny, fast, and fixed-width (8/16/32 bit). Input can be UTF-8 text or hex bytes; results are shown in both hex (uppercase) and decimal alongside each algorithm's polynomial, initial value, reflection flags and final XOR — useful for matching against datasheets. Everything runs in your browser; nothing is uploaded.

Generate SHA-1, SHA-256, SHA-384, and SHA-512 digests from text in parallel. Powered by the Web Crypto API and runs entirely in your browser.