Beyond encryption and decryption of data, which of the following is not a function of...

Comprehensive and Detailed in Depth Explanation:

The Transit secrets engine focuses on cryptographic operations, not storage. The HashiCorp Vault documentation states: "The transit secrets engine handles cryptographic functions on data in-transit. Vault doesn’t store the data sent to the secrets engine. It can also be viewed as ‘cryptography as a service’ or ‘encryption as a service’. The transit secrets engine can also sign and verify data; generate hashes and HMACs of data; and act as a source of random bytes."

It emphasizes: "Vault does not store the data sent to the secrets engine," makingstore the encrypted data (C)incorrect.Generate hashes/HMACs (A),sign/verify (B), andrandom bytes (D)are all supported functions. Thus, C is correct.