Data storage device and data processing system having the same

A data processing system comprising:

• a host;
• and
• a data storage device connected to the host, the data storage device includes,
• a nonvolatile memory;
• and
• a controller configured to receive a command generated by the host and control an operation of the nonvolatile memory in response to the command, the controller includes,
• a core configured to receive and process the command;
• a trace circuit corresponding to the core and configured to perform a trace operation on the core in real time during an operation of the core;
• and
• a trace controller configured to control the trace operation of the trace circuit, based on a result of performing at least one authentication control operation corresponding to the command.

A controller for a data storage device comprising:

• a trace circuit configured to generate trace data;
• an authentication control circuit configured to receive authentication information from a host and output a control signal;
• and
• an encryptor/decryptor configured to
• receive and encrypt the trace data,
• output the encrypted trace data to a memory,
• receive the encrypted trace data from the memory,
• decrypt the encrypted trace data received from the memory,
• determine whether the control signal is valid, and
• output one of the encrypted trace data received from the memory and
• the decrypted trace data based on a result of the determination.