US 11,720,664 B2
Methods and systems for password protection of defined spaces within a memory card
Lovish Singla, Bangalore (IN); Sandeep Singh, Bangalore (IN); Lovleen Arora, Bangalore (IN); and Arunkumar Balasubramanian, Bangalore (IN)
Assigned to Western Digital Technologies, Inc., San Jose, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Jul. 14, 2020, as Appl. No. 16/928,292.
Prior Publication US 2022/0019653 A1, Jan. 20, 2022
Int. Cl. G06F 21/46 (2013.01); G06F 21/79 (2013.01); G06F 12/14 (2006.01); G06F 21/34 (2013.01)
CPC G06F 21/46 (2013.01) [G06F 12/1441 (2013.01); G06F 21/34 (2013.01); G06F 21/79 (2013.01); G06F 2212/2146 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of password protection of defined spaces in a memory device, the method comprising:
receiving a data block from a host device, the data block comprising at least (a) a user-defined current password, (b) a user-defined new password, (c) a password length of the user-defined current password, (d) a password length of the user-defined new password, and (e) a user-defined address range field including a start address and an end address of a defined space in the memory device;
matching the password length of the user-defined current password and a current password length of a current password for the defined space previously stored in the memory device;
comparing the user-defined current password and the current password of the defined space; and
resetting the current password of the defined space with the user-defined new password based on a result of the matching and a result of the comparing.