TECHNIQUES FOR INTEGRATED CIRCUIT DATA PATH CONFIDENTIALITY AND EXTENSIONS THEREOF

摘要

Techniques for protecting data in a processor are provided. An example method according to these techniques includes performing one or more operations on encrypted data using one or more functional units of a data path of the processor to generate an encrypted result. Performing the one or more operations includes: receiving at least one encrypted parameter pair at a functional unit, each encrypted parameter pair comprising an encrypted parameter value and a challenge value associated with the encrypted parameter value, the encrypted parameter being encrypted using a homomorphic encryption technique, the challenge value being used to recover a key used to encrypt the encrypted parameter value, and performing a mathematical computation on the at least one encrypted parameter. The method also includes outputting the encrypted result.

主权项

1. A method for protecting data in a processor, the method comprising:
performing one or more operations on encrypted data using one or more functional units of a data path of the processor to generate an encrypted result, wherein performing the one or more operations comprises
receiving at least one encrypted parameter pair at a functional unit, each encrypted parameter pair comprising an encrypted parameter value and a challenge value associated with the encrypted parameter value, the encrypted parameter value being encrypted using a homomorphic encryption technique, the challenge value being used to recover a key used to encrypt the encrypted parameter value, andperforming a mathematical computation on at least one encrypted parameter value of the at least one encrypted parameter pair; and outputting the encrypted result.