If the received password is coincident with a password generated in the host, the host certifies the received password and allows communication to be held.

若接收的口令与主机中产生的口令一致，则主机确认接收的口令，并允许通信继续保持。

youdao

Hitachi's version "scrambles data using a password-generated key" as the data is written, and then descrambled with the key as it is retrieved using the highly-touted Advanced Encryption Standard (AES) algorithm.

ENGADGET: Hitachi to offer auto-encrypting hybrid notebook HDDs in 2007