Abstract: Methods and apparatus are provided for securing communications between a node and a server, for example, during a boot process. In accordance with an aspect of the invention, a method is provided for securing communications between a node and a server, comprising: dynamically gathering hardware-related metadata for the node using a process running in memory; generating a unique identifier for the node using the hardware-related metadata; generating a public/private key pair for the node using the unique identifier; and securing communications between the node and the server using the public/private key pair. The process comprises, for example, an in-memory microkernel executing on a boot node. The hardware-related metadata comprises, for example, information about physical characteristics of the node. The unique identifier for the node can optionally be further based on information obtained from a Trusted Processing Module. The node can be authenticated using the public/private key pair.