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:
Jun. 13, 2023
Filed:
Apr. 07, 2021
Samsung Electronics Co., Ltd., Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A memory controller includes a key generator, an encryption and decryption circuit, and a processor. The key generator generates a first security key and a second security key based on a write request from a host. The encryption and decryption circuit encrypts write data corresponding to the write request based on the first security key to generate encrypted write data, and encrypts the first security key based on the second security key to generate a first encrypted security key. The processor controls nonvolatile memories such that the encrypted write data, the first encrypted security key, and the second security key are programmed in at least one of the nonvolatile memories, and controls the nonvolatile memories such that a dummy program operation is performed on a page of the nonvolatile memories in which the second security key is programmed instead of erasing the encrypted write data.