How does Vault ensure that data in transit is secure?

Vault ensures that data in transit is secure primarily by using TLS/SSL for communication. TLS (Transport Layer Security) and its predecessor SSL (Secure Sockets Layer) are cryptographic protocols designed to provide secure communication over a computer network. When Vault communicates with clients, it encrypts the data being transmitted, ensuring that sensitive information such as secrets and tokens cannot be easily intercepted by unauthorized parties.

This implementation of TLS/SSL not only protects the confidentiality of the data but also provides integrity and authentication. It verifies that the data sent between the client and the Vault server has not been altered during transit and confirms the identities of the parties involved in the communication. As a result, it plays a critical role in securing the communication framework of Vault, protecting against man-in-the-middle attacks and eavesdropping.

Other options, while they involve security mechanisms, do not specifically address the aspect of securing data in transit. For example, AES encryption is used for encrypting data at rest or in storage rather than during transportation. IP whitelisting is a network security measure that restricts access based on IP addresses but does not encrypt data being transmitted. Digital signatures provide a way to verify the authenticity of a message but do not secure the transmission itself. These mechanisms are