Extending measured boot for secure link establishment

A modified measured boot approach is utilized for establishing a secure communication link between two devices. Each device may execute a respective boot process until the device reaches the stage responsible for establishing the communication link with the other device. Each device may exchange its respective self-signed certificate and extend its certificate chain with the self-signed certificate received from the other device. Each device can then generate a new pair of keys based on its extended certificate chain that includes the identity of the other device, and exchange the public key of the new key pair with the other device. A secure link can be established using the public key of the other device as a based key for a key exchange protocol. A central management entity can attest the measurements of the boot stages for each device using the corresponding public key.