CRC-16/XMODEM

CRC16 detects accidental errors in transmission; not cryptographic integrity.

CRC-16/XMODEM online — free, no upload (FAQs)

FAQs

Params?
poly 0x1021, init 0x0000, no reflection.

Related tools

CRC-16/XMODEM FAQs

FAQs

Typical usage?
Legacy modem/file transfer protocols; ensure same block padding rules.