Non-volatile memory for secure storage of authentication data

A system comprising:

• a first non-volatile memory storing a cryptographic key;
• a second non-volatile memory storing additional data;
• a circuit to perform a recovery operation for the cryptographic key stored at the first non-volatile memory without performing the recovery operation for the additional data stored at the second non-volatile memory;
• a processing device, operatively coupled with the first non-volatile memory and the second non-volatile memory, to:
• receive a request to perform an authentication operation;
• in response to the request to perform the authentication operation, read the cryptographic key stored at the first non-volatile memory for which the recovery operation is performed and read the additional data stored at the second non-volatile memory for which the recovery operation is not performed;
• and
• generate an authentication proof based on the cryptographic key read from the first non-volatile memory and the additional data read from the second non-volatile memory.

A non-transitory computer readable medium comprising instructions, which when executed by a processing device, cause the processing device to perform operations comprising:

• receiving a request to perform an authentication operation;
• in response to the request to perform the authentication operation, reading a cryptographic key that is a subject of a recovery operation, the cryptographic key being stored at a first non-volatile memory;
• in response to the request to perform the authentication operation, reading additional data for which the recovery operation is not to be performed, the additional data being stored at a second non-volatile memory;
• and
• generating an authentication proof based on the cryptographic key read from the first non-volatile memory and the additional data read from the second non-volatile memory.