Comprehensive and Detailed in Depth

The response wrapping feature in Vault functions by securing responses in a single-use token’s

cubbyhole. The HashiCorp Vault documentation states: "To help address this problem, Vault includes

a feature called response wrapping. When requested, Vault can take the response it would have sent

to an HTTP client and instead insert it into the cubbyhole of a single-use token, returning that single-

use token instead." This ensures the response is accessible only once by the intended recipient.

The docs further explain: "Logically speaking, the response is wrapped by the token, and retrieving it

requires an unwrap operation against this token. Functionally speaking, the token provides

authorization to use an encryption key from Vault’s keyring to decrypt the data." Options B, C, and D

misrepresent this process—no dedicated key encryption, no splitting into multiple tokens, and no

persistent multi-use tokens occur. Thus, A is correct.

Reference:

HashiCorp Vault Documentation - Response Wrapping