Secure Application Data Transfer Via TEE, MMIO, and DMA
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Solution Overview
Problem
In disaggregated computing environments, securing data transfer between secure applications and networked devices is challenging due to the distributed nature of compute resources, which can expose data to untrusted components and compromise security and performance.
Innovation Solution
Implementing a trusted execution environment (TEE) with secure I/O mechanisms, such as memory-mapped I/O (MMIO) and direct memory access (DMA) transactions, to encrypt and authenticate data transfers between processors and accelerators, ensuring that only trusted components within the TEE can access sensitive data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transferred between secure applications and networked devices in disaggregated computing environments, then resource utilization and computational efficiency are improved, but security is compromised due to exposure to untrusted components
Solution Approach 1:
The system segments the computing environment into trusted and untrusted zones by implementing a trusted execution environment (TEE) that isolates sensitive data and operations. The TEE creates secure boundaries around critical functions, allowing data to be processed in disaggregated environments while maintaining security through spatial separation of trusted and untrusted components.
Solution Approach 2:
The patent introduces a trusted execution environment (TEE) as an intermediary layer between secure applications and networked devices. This TEE acts as a mediator that enables secure data transfer by authenticating components, encrypting data in transit, and verifying integrity, thus allowing resource utilization benefits of disaggregated computing while mitigating security risks from untrusted components.
2Ease of operation
If traditional I/O mechanisms are used in disaggregated computing, then ease of operation is maintained, but security is compromised due to lack of protection against untrusted software
Solution Approach 1:
The system changes the security parameters of I/O operations by implementing authentication and encryption protocols within the trusted execution environment. These parameter changes allow standard I/O mechanisms to operate seamlessly while adding security layers that protect against untrusted software without requiring changes to the fundamental ease of operation.
Solution Approach 2:
The patent creates a composite security architecture that combines traditional I/O mechanisms with trusted execution environment protections. This composite approach integrates conventional ease-of-use I/O operations with advanced security features, resulting in a system that maintains operational simplicity while incorporating multiple layers of security defense against untrusted components.
3Productivity
If multi-tenant environments are utilized in disaggregated computing, then resource efficiency is improved, but security risks increase due to shared infrastructure
Solution Approach 1:
The trusted execution environment segments the shared multi-tenant infrastructure into isolated secure containers. Each tenant's sensitive data and operations are separated into distinct TEE instances, allowing efficient resource sharing while preventing cross-tenant security violations and data leakage through enforced isolation boundaries.
Solution Approach 2:
The TEE serves as an intermediary trust layer in multi-tenant environments, mediating access to shared resources. It authenticates tenants, encrypts data at rest and in transit, and verifies integrity of shared infrastructure components, enabling secure resource efficiency benefits of multi-tenancy while mitigating risks from shared infrastructure exposure.
Data Source
AI summary
An apparatus to facilitate protecting data transfer between a secure application and networked devices is disclosed. The apparatus includes a processor to provide a trusted execution environment (TEE) to run an application, wherein the processor is to: generate, via the application in the TEE, encrypted data, wherein the encrypted data comprises a payload; copy, via the application in the TEE, the encrypted data to a local buffer; interface, using the application in the TEE, with a source network interface controller (NIC) to initiate a copy over a network of the encrypted data from the local buffer to a remote buffer of a remote platform; and communicate, after completing the copy of the network of the encrypted data, at least one message with the remote platform to indicate that the encrypted data is available and to enable the remote platform to verify integrity of the encrypted data.