The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2022
Filed:
Mar. 26, 2019
Western Digital Technologies, Inc., San Jose, CA (US);
Tino Lin, Irvine, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A direct-attached storage device bridge includes boot loader logic, a read-only memory, and logic to generate hash codes to be compared to determine whether to proceed with booting of the device. The hash codes may result from applying a public key from the read-only memory to decrypt an encrypted hash code into a decrypted hash code, to decrypt encrypted firmware instructions and to calculate a first calculated hash code of the decrypted firmware instructions, and to calculate a second calculated hash code for firmware instructions stored as clear-text. Multiple public keys may be utilized and selected during the boot process. The encryption and decryption may utilize asymmetric and symmetric keys.