![]() ![]() ![]() This feature helps prevent data corruption and replay attacks by detecting unauthorised modifications to memory pages. For example, when reading memory pages mapped to confidential workloads, these new instructions also provide information about the last value written into the page. These tasks encompass memory management and access to platform devices. Integrity: Additional CPU-Based Hardware Access Control Mechanisms introduce new instructions and data structures that enable auditing security-sensitive tasks typically carried out by privileged system software.The encryption key is secure stored within a hardware root of trust and is inaccessible to any of the platform’s privileged system software (such as the host operating system or hypervisor) This engine encrypts and decrypts memory pages whenever there is a memory read or write operation. ![]() Confidentiality: CPUs equipped with confidential computing capabilities include an AES-128 hardware encryption engine within their memory controller.To achieve this high level of security, silicon technologies such as AMD SEV-SNP and Intel TDX incorporate new CPU security extensions that provide strong confidentiality and integrity guarantees to the code and data that run within the TEE. ![]() Beyond silicon attestation for confidential computingĬonfidential computing aims to protect end-users’ sensitive workloads by running them within hardware-protected trusted execution environments (TEEs). To better align with these user requirements, Canonical is excited to announce ephemeral OS disks for Ubuntu confidential VMs (CVMs) on Microsoft Azure – a new solution that enables you to store disks on your VM’s OS cache disk or temp/resource disk, without needing to save them to any other remote Azure Storage.Įmpowering customers with a Virtual Trusted Platform Module (vTPM) that doesn’t preserve its state across reboots, this solution lays the foundation for a more meaningful remote attestation solution and reduces dependence on cloud infrastructure.īefore we dig deeper into ephemeral OS disks and vTPMs, let’s take a look at the current state of confidential computing and its limitations. As the adoption of confidential computing continues to grow, customers expect their confidential workloads to be strongly separated from their underlying cloud providers. ![]()
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