What can be revoked by Vault?

The ability to revoke a tree of secrets related to a user is a key feature of HashiCorp Vault, which supports the concept of dynamic secrets. In Vault, when a secret is created dynamically—such as database credentials—they are usually tied to a particular identity or role. By revoking the tree of secrets, Vault ensures that all secrets related to that specific user or identity can be invalidated at once, providing a secure way to manage access.

This functionality is especially important in scenarios where multiple secrets might be generated for a user, such as when they provision multiple temporary access tokens or credentials. Revoking them as a tree helps maintain a clear and organized access policy and minimizes the potential for lingering secrets that may still grant unintended access.

The other options do not encapsulate the full capability of Vault's revocation system. For instance, the option regarding only single secrets limits the discussion and ignores the broader structure of how secrets can be modeled and managed in Vault. Similarly, the focus on publicly shared secrets or static secrets alone does not accurately reflect Vault's robust management of dynamic and user-specific secrets. Thus, the choice of revoking a tree of secrets emphasizes Vault's capabilities in centralized and cohesive secret management, enhancing security and operational efficiency.