#vminstance

Confidential virtual machine overview

Confidential VMs Google

One kind of Compute Engine virtual machine is a confidential virtual machine (VM). To help guarantee that your data and applications cannot be read or altered while in use, they employ hardware-based memory encryption.

Below are some advantages of confidential virtual machine instances:

Isolation: Only specialized hardware, unavailable to the hypervisor, generates and stores encryption keys.

Attestation: To ensure that important parts haven’t been tampered with, you can confirm the identity and condition of the virtual machine.

A Trusted Execution Environment is a term used to describe this kind of hardware isolation and attestation (TEE).

When you create a new virtual machine instance, you have the option to activate the Confidential VM service.

Confidential computing technology

Depending on the machine type and CPU platform you select, different Confidential Computing technologies can be employed while setting up a Confidential VM instance. Make sure the technology you select for Confidential Computing meets your budget and performance requirements.

AMD SEV

AMD Secure Encrypted Virtualization (SEV) on Confidential VM provides boot-time attestation using Google’s vTPM and hardware-based memory encryption via the AMD Secure Processor.

AMD SEV provides excellent performance for computationally intensive activities. Depending on the workload, the performance difference between a normal Compute Engine VM and a SEV Confidential VM can be negligible or nonexistent.

AMD SEV systems using the N2D machine type offer live migration, in contrast to other Confidential Computing technologies using Confidential VM.

AMD SEV-SNP

Adding hardware-based security to assist thwart malicious hypervisor-based attacks like data replay and memory remapping, AMD Secure Encrypted Virtualization-Secure Nested Paging (SEV-SNP) builds on SEV. Direct attestation results from the AMD Secure Processor are available upon request at any time.

Compared to SEV, AMD SEV-SNP requires greater resources due to its increased security measures. In instance, you may see higher network latency and decreased network bandwidth based on the demand.

TDX Intel

A hardware-based TEE is Intel Trust Domain Extensions (TDX). In order to manage and encrypt memory, TDX employs hardware extensions to establish an isolated trust domain (TD) inside of a virtual machine (VM).

By enhancing the defense of the TD against specific types of attacks that require physical access to the platform memory, such as active attacks of DRAM interfaces that involve splicing, aliasing, capturing, altering, relocating, and modifying memory contents, Intel TDX enhances the defense of the TD.

Confidential VM service

Confidential VM is used by the following Google Cloud services in addition to Compute Engine:

Secret All of your Google Kubernetes Engine nodes are required to use Confidential VM.

With a mutually agreed-upon workload, Confidential Space employs Confidential VM to allow parties to share sensitive data while maintaining ownership and confidentiality of that data.

Confidential VM-using Dataproc clusters are part of Dataproc Confidential Compute.

Features of Dataflow Confidential VM worker for dataflow confidential virtual machines.

Google Cloud is dedicated to keeping your data under your complete control and safe and secure. To start, use Confidential Computing to strengthen the Compute Engine virtual machines (VMs), which are the cornerstone of your compute architecture.

Using a hardware-based Trusted Execution Environment (TEE), Confidential Computing safeguards data throughout use and processing. TEEs are safe, segregated spaces that guard against illegal access to or alteration of data and applications while they’re in use.

Confidential Computing technologies and solutions have been early adopters and investments for us at Google. Google customers have been utilizing their expanded Confidential Computing products and new capabilities for over four years, utilizing them in creative ways to improve the security and confidentiality of their workloads. It was excited to announce the broad release of upgrades to the Google Cloud attestation service as well as numerous additional Confidential Computing choices.

Currently accessible to most people: Segmented virtual machine with AMD SEV on C3D platforms

It is pleased to inform you that Confidential VMs Google equipped with AMD Secure Encrypted Virtualization (AMD SEV) technology are now widely accessible on the general purpose C3D machine line. Using hardware-based memory encryption, Confidential VMs with AMD SEV technology help guarantee that your data and apps cannot be read or changed while in use. With Google’s Titanium hardware, the C3D machine series is built to provide optimal, dependable, and consistent performance, and is powered by the 4th generation AMD EPYC (Genoa) processor.

Prior to this, only the general-purpose N2D and C2D machine series offered Confidential VMs. The latest general purpose hardware with enhanced performance and data secrecy is now available to security-conscious customers with the expansion to the C3D machine line. Better performance comes from using the newest gear. Read more about the performance of the C3D machine series and confidential virtual machines here.

In any region and zone where C3D machines are available, confidential virtual machines featuring AMD SEV are accessible.

Now widely accessible: Intel TDX-powered confidential virtual machine on the C3 machine series

Confidential VMs Google equipped with Intel Trust Domain Extensions (Intel TDX) technology are now widely accessible on the general-purpose C3 machine series. Using hardware-based memory encryption, Confidential VMs with Intel TDX technology help guarantee that your data and apps cannot be read or changed while in use.

There are no code changes needed to enable confidential computing on a C3 virtual machine. You can use Intel Trust Authority’s remote attestation service or your own attestation provider to confirm that your hardened virtual machine (VM) is operating in a TEE. The 4th generation Intel Xeon Scalable CPUs (code-named Sapphire Rapids), DDR5 memory, and Google Titanium power the C3 machine line.

Intel AMX integrated CPU acceleration

By default, all C3 virtual machines (VMs), including Confidential VMs, have Intel Advanced Matrix Extensions (Intel AMX) enabled. To speed up workloads related to machine learning and artificial intelligence, Intel AMX is a novel expansion to the instruction set architecture (ISA). Two of the most popular processes in AI and ML are matrix multiplication and convolution, which may be carried out with the new instructions that AMX offers. You can execute AI/ML applications with an extra degree of protection by combining Intel AMX with Confidential VMs.

Asia-southeast1, US-central1, and Europe-west4 are the regions where Confidential VM with Intel TDX on the C3 machine series is accessible.

Confidential VM with AMD SEV-SNP on the N2D machine series is now widely accessible

Customers now have access to Confidential VMs with hardware-rooted attestation, data integrity, and data confidentiality thanks to the release of AMD Secure Encrypted Virtualization-Secure Nested Paging (AMD SEV-SNP) on the general purpose N2D machine series this past June. Prior to this, users could only access private VMs with AMD Secure Encrypted Virtualization (SEV), a private computing solution that guaranteed data confidentiality.

All Confidential VMs give users an extra line of defense and data protection against cloud administrators, operators, and insiders while also enabling them to retain control over their data in the public cloud and achieve cryptographic isolation in a multi-tenant environment. Confidential VMs with AMD SEV-SNP, on the other hand, come with further security measures that guard against harmful hypervisor-based assaults such memory remapping and data replay.

AMD SEV-SNP on the N2D machine series makes it simple and doesn’t require any code changes to create Confidential VMs. You also get the security advantages with less impact on performance.

Asia-southeast1, US-central1, Europe-west3, and Europe-west 4 are the regions where confidential virtual machines with AMD SEV-SNP on the N2D machine series are accessible.

Signed Intel TDX and AMD SEV-SNP UEFI binaries for Confidential Virtual Machines

With the addition of signed startup measures (UEFI binaries and initial state) to its Confidential VMs running AMD SEV-SNP and Intel TDX technologies, it is thrilled to announce a major security improvement. By signing these files, provided an additional degree of security against unauthorized changes or tampering with UEFI, the firmware that manages a computer’s startup procedure.

Gaining further transparency and confidence that the firmware operating on your Confidential VMs is authentic and uncompromised can be achieved by signing the UEFI and enabling you to validate the signatures. Your authenticated devices are operating in a secure and reliable environment if you can confirm the validity and integrity of the firmware.

Google intends to take other actions to create a system that is more verifiably reliable and secure.

AMD SEV Confidential VM is now supported by Google Cloud attestation

If your trust model permits it, you can use the Google Cloud attestation service in place of creating and executing an attestation verifier yourself. Use the Go-TPM tools to obtain an attestation quote from the vTPM of an AMD SEV Confidential VM instance, then transmit it to the Google Cloud Attestation service using the./go-tpm token command for verification.

You can verify whether or not the virtual machine (VM) can be trusted by comparing its details with your own policy once the Google Cloud Attestation has verified the attestation quote. Only AMD SEV is currently supported by Google’s attestation service.

Confidential VM costs

In addition to the Compute Engine price, there are additional expenses for Confidential VM. The cost of a Confidential VM instance is determined by several factors, including the type of Confidential Computing technology (such as AMD SEV, Intel TDX, or AMD SEV-SNP) and whether the instance is preemptible or on demand. The fees are flat rate per vCPU and per GB for Confidential VM.

See here for the price of the Confidential VM. See this page for Compute Engine’s price list.

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