Memory system and method of generating management information

摘要

According to one embodiment, a memory system includes a host interface, a first storage unit which stores data in a nonvolatile manner, and a memory controller. The memory controller includes a management information generating unit which generates command information for every command received from a host through the host interface and a digital signature calculating unit which generates a digital signature from the command information using a secret key. The management information generating unit generates management information which contains the command information and the digital signature for the every command.

主权项

1. A memory system comprising:
a host interface configured to be connectable to a host; a nonvolatile memory; and a memory controller configured to write data to the nonvolatile memory and read data from the nonvolatile memory based on a command issued from the host through the host interface, wherein the memory controller is configured to
generate command information for the command received from host through the host interface, the command information including command identifying information which identifies the command, the command instructing any one of initialization, erase, reuse, and discard of the memory system,generate a digital signature based on the command information using a secret key,generate management information which contains the command formation and the digital signature for the command, andtransmit the management information to the host.