Phison Electronics Corporation

Chung-Hsun Ma

Ming-Jen Liang

Khein-Seng Pua

Chih-Ling Wang

Hon-Wai Ng

Shu-Hua Wang

Cheng-Chi Hsieh

Chin-Ling Wang

A system, a controller, and a method for data storage are provided. The system includes a first storage unit, a second storage unit, and a controller. The first storage unit comprises a single-layer structure for storing data, and the second storage unit comprises a multi-layer structure for storing data. The controller is coupled to the first storage unit, the second storage unit, and a host and controls the host to set the first storage unit as a master storage device and set the second storage unit as a slave storage device. As a result, the host can recognize the first storage unit and the second storage unit as two independent storage devices for storing data. Thereby, the data storage process can be simplified.

System, controller, and method for data storage

The present invention discloses a data access method accomplished by the following steps of: creating a predetermined password; generating a first encryption key; encrypting data based on the first encryption key; prompting for the predetermined password upon receipt of an access request; decoding a header of the NAND flash memory based on a user-entered password; examining the header to determine whether a mapping between the user-entered password and the first encryption key is defined; and decrypting and outputting the data by a decryption key when the mapping between the user-entered password and the first encryption key is defined.

Data access method against cryptograph attack

Growing community of inventors

Miaoli, Taiwan

Chung-Hsun Ma