> For the complete documentation index, see [llms.txt](https://docs.scrt.network/secret-network-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.scrt.network/secret-network-documentation/introduction/secret-network-techstack/privacy-technology/intel-sgx/sealing.md). # Sealing Trusted Execution Environments are essentially stateless. To preserve information that’s stored in an enclave, it must be explicitly sent outside the enclave to untrusted memory. SGX provides a capability called [data sealing](https://software.intel.com/en-us/blogs/2016/05/04/introduction-to-intel-sgx-sealing) which encrypts enclave data in the enclave using an encryption key derived from the CPU. This encrypted data block can only be decrypted, or unsealed, on the same system. This SGX-specific method for storing data is not used to store computation input/output data in the Secret Network. It is used to store the enclave’s signing key. We seal the signing key because this key is created during the remote attestation process. We do not want the enclave to be required to perform [remote attestation](https://docs.scrt.network/protocol/encryption-specs.html#new-node-registration) between each computation. If the enclave fails for some reason, and the key is lost, the worker would be obligated to go through the remote attestation process again. The only way to store persistent data from the enclave is through sealing. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.scrt.network/secret-network-documentation/introduction/secret-network-techstack/privacy-technology/intel-sgx/sealing.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.