Abstract: A method for protecting an OS disk of a computing device without block encrypting the OS disk. The method identifies one or more files that store configuration data associated with OS binaries executed on the computing device. The method encrypts the configuration data stored in the one or more files using an encryption key and seals the encryption key to a TPM of the computing device. The method then boots the computing device by attempting to unseal the encryption key by authenticating one or more of the OS binaries with the TPM. When authenticating the one or more of the OS binaries is successful, the method completes boot of the computing device by decrypting the configuration data using the encryption key. If authentication of the one or more of the OS binaries is not successful, however, the method aborts boot of the computing device.

Abstract: A method of attestation of a host machine based on runtime configuration of the host machine is provided. The method receives, at an attestation machine, a request from the host machine for attestation of a software executing on the host machine, the request including at least one security-related configuration of the software at launch time and a corresponding runtime behavior of the software when the security-related configuration changes. The method then generates a claim based on evaluating a value associated with the at least one security-related configuration and the corresponding runtime behavior of the software when the value changes. The method also generates an attestation token after a successful attestation of the software and include in the attestation token the generated claim. The method further transmits the attestation token to the host machine.

Abstract: A method for protecting an OS disk of a computing device without block encrypting the OS disk. The method identifies one or more files that store configuration data associated with OS binaries executed on the computing device. The method encrypts the configuration data stored in the one or more files using an encryption key and seals the encryption key to a TPM of the computing device. The method then boots the computing device by attempting to unseal the encryption key by authenticating one or more of the OS binaries with the TPM. When authenticating the one or more of the OS binaries is successful, the method completes boot of the computing device by decrypting the configuration data using the encryption key. If authentication of the one or more of the OS binaries is not successful, however, the method aborts boot of the computing device.

Abstract: A method of attestation of a host machine based on runtime configuration of the host machine is provided. The method receives, at an attestation machine, a request from the host machine for attestation of a software executing on the host machine, the request including at least one security-related configuration of the software at launch time and a corresponding runtime behavior of the software when the security-related configuration changes. The method then generates a claim based on evaluating a value associated with the at least one security-related configuration and the corresponding runtime behavior of the software when the value changes. The method also generates an attestation token after a successful attestation of the software and include in the attestation token the generated claim. The method further transmits the attestation token to the host machine.

Abstract: A method for an attestation machine to attest a software executing on a remote machine is provided. The method receives, at the attestation machine, a request from the remote machine for attestation of the software executing on the remote machine. The method then determines, by the attestation machine, whether metadata associated with the software is stored at a remote server. The remote server includes several software packages for at least one of installation or upgrade and metadata associated with each of the several software packages. When the metadata associated with the software is stored at the remote server, the method sends, from the attestation machine, an attestation confirmation message to the remote machine.

Abstract: An example method of authenticating software executing in a computer system includes verifying first software executing on the computer system, the software including a hypervisor, verifying second software executing in a virtual machine (VM) managed by the hypervisor, generating a binding key having public and private portions, signing an object to identifies the VM using the private portion of the binding key, and verifying a signature of the object using a public portion of the binding key.

Abstract: An example method of authenticating software executing in a computer system includes: receiving, from the computer system over a network at a server computer, a trusted platform module (TPM) quote, an event log, and a metadata database, the TPM quote provided by a TPM in the computer system, the event log including first checksums for the software executing in the computer system, and the metadata database including second checksums of binary files stored in packages from which the software is installed; establishing a root of trust in the computer system at the server computer based on the TPM quote and the event log; and determining, at the server computer in response to establishing the root of trust, integrity of the software executing in the computer system by comparing the first checksums with the second checksums.

Abstract: An example method of authenticating software executing in a computer system includes verifying first software executing on the computer system, the software including a hypervisor, verifying second software executing in a virtual machine (VM) managed by the hypervisor, generating a binding key having public and private portions, signing an object to identifies the VM using the private portion of the binding key, and verifying a signature of the object using a public portion of the binding key.

Abstract: An example method of authenticating software executing in a computer system includes: receiving, from the computer system over a network at a server computer, a trusted platform module (TPM) quote, an event log, and a metadata database, the TPM quote provided by a TPM in the computer system, the event log including first checksums for the software executing in the computer system, and the metadata database including second checksums of binary files stored in packages from which the software is installed; establishing a root of trust in the computer system at the server computer based on the TPM quote and the event log; and determining, at the server computer in response to establishing the root of trust, integrity of the software executing in the computer system by comparing the first checksums with the second checksums.