US 12,726,335 B2 · Techniques for non-volatile data protection

Abstract

Methods, systems, and devices for techniques for non-volatile data protection are described. As part of a power on operation, a non-volatile memory system may be configured to selectively stored data. For example, the memory system may determine whether a host system is authorized to access data stored in the memory system prior to a power off operation. If the memory system determines that the host system is authorized, the memory device may retain the data. If the memory system determines that the host system is not authorized, the memory system may erase all or a portion of the data. In some cases, the memory system may maintain a retain flag to determine whether the host system is authorized. Additionally or alternatively, the memory system may determine whether a password received from the host system is valid to determine whether the host system is authorized.

Claims17

Dependent claims

A system, comprising:

a memory system comprising one or more memory cells and one or more components configured to generate a first password, encrypt the first password to obtain a second encrypted password, and decrypt a third encrypted password to obtain a fourth password, wherein the one or more components are configured to compare the first password with the fourth password to authorize access to the one or more memory cells;
and
a host system coupled with the memory system, wherein the host system comprises one or more components configured to store the second encrypted password for use in a power-on operation of the memory system, decrypt the second encrypted password to obtain a fifth password, and encrypt the fourth password to obtain the third encrypted password as part of the power-on operation.

Dependencies are inferred from the claim text.

Techniques for non-volatile data protection

Life of this patent

Techniques for non-volatile data protection

Life of this patent

Abstract

Claims17