Memory device which protects secure data, method of operating the memory device, and method of generating authentication information

摘要

In one embodiment, the memory device includes a first memory area and a second memory area. The first memory area stores secure data. The first memory area is inaccessible by an external device. The second memory area is configured to store encrypted secure data. The second memory area is accessible by the external device, and the encrypted secure data is an encrypted version of the secure data in the first memory area.

主权项

1. A nonvolatile memory device including a memory array, comprising:
a first memory area in the memory array storing secure data, the first memory area being unable to be read by an external device in response to a request from the external device for the secure data, and the secure data being programmed by a vendor of the nonvolatile memory device; a second memory area in the memory array storing encrypted secure data, the second memory area being accessible by the external device; and secure logic configured to access the secure data from the first memory area in response to the request, generate the encrypted secure data from the accessed secure data, and store the encrypted secure data in the second memory area so that the stored encrypted secure data is accessible by the external device, wherein the secure data includes a unique key of the nonvolatile memory device and the secure logic is located in the nonvolatile memory device, wherein the first memory area is configured to store a plurality of spare keys, the plurality of spare keys for generating authentication information of the nonvolatile memory device, and wherein the second memory area is configured to store a plurality of spare key indexes, the plurality of spare key indexes being linked to the plurality of spare keys.