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| the Teaclave platform.</p> <h2 id="services"><a href="#services" class="header-anchor">#</a> Services</h2> <p>The platform includes several services (or subsystem) running inside TEE, and |
| communicated with <em>mutual-attested channels</em>. They coordinate together to provide |
| a safe and secure FaaS platform.</p> <ul><li><strong>Authentication Service</strong>: A reference implementation of user authentication |
| infrastructure. Here, we use JSON Web Token (JWT), a simple and widely-used |
| authentication standard, to provide a secure authentication mechanism in the |
| platform. Clients need to get valid token before interacting with the platform.</li> <li><strong>Frontend Service</strong>: This is the entry point of all requests from users. It will |
| validate user's identity/token and forward requests to appropriate services.</li> <li><strong>Management Service</strong>: This service plays an important role in the whole services. |
| It handles almost all requests, such as registering functions/data, creating |
| tasks, and invoking tasks. Also, the management service will contact the |
| access control service to authorize operations when needed. In addition, task |
| and function information will be persistent into the storage services.</li> <li><strong>Storage Service</strong>: Basically, the storage service stores persistent data like |
| function, execution data, and task information in the platform. Here, we |
| deploy a key-value database (an implementation of LevelDB) in TEE and use the |
| protected file system (secured by the enclave) for data persistence.</li> <li><strong>Access Control Service</strong>: Provides a flexible access control domain specific |
| language to support access control rules for secure multi-party computation. |
| The access control engine is written in Python and evaluated in SGX. Please |
| read <a href="/teaclave/docs/access-control.html">this document</a> to learn more about the design of it.</li> <li><strong>Scheduler Service</strong>: Schedules staged tasks ready for execution to a proper |
| execution node with desirable capabilities.</li> <li><strong>Execution Service</strong>: A host of different executors interacting with the |
| scheduler service to complete tasks. There could be many execution service |
| instances (or nodes) with different capabilities deployed in a cloud |
| infrastructure.</li></ul> <p>To learn more about the design and internal implementation of services, please |
| read <a href="/teaclave/docs/service-internals.html">Teaclave Service Internals</a>.</p> <h2 id="topology"><a href="#topology" class="header-anchor">#</a> Topology</h2> <p>These services are communicating through RPC with remote attestation. |
| This topological graph illustrates connections between services.</p> <div class="language- extra-class"><pre class="language-text"><code>clients => authentication <-+ +----> storage <----+ |
| | | | |
| clients => frontend ----------> management scheduler <-- execution |
| | |
| +--> access_control |
| |
| |
| => api endpoint connections |
| -> internal endpoint connections |
| </code></pre></div><p>Internal endpoint connections will be established and verified with mutual |
| remote attestation to ensure the integrity and confidentiality of the whole system. |
| Therefore, clients can trust the whole platform and safely interacting with the |
| system through the attested authentication and frontend services.</p></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">7/10/2020, 6:56:53 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev"> |
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