Blockchain, Secure enclave, Hashing

Blockchain The ledger functionality of a blockchain can be used to track or verify components, digital media, votes, and other physical or digital objects.

A. Secure enclave A secure enclave is a protected area for secret information, and the secure enclave is often implemented as a hardware processor in a device.

C. Hashing Cryptographic hashes are commonly used to provide integrity verifications, but they don't necessarily include any method of tracking components on an assembly line.

D. Asymmetric encryption Asymmetric encryption uses different keys for encryption and decryption. Asymmetric encryption does not provide any method for tracking objects on an assembly line.