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A Trusted Execution Environment (TEE) is a secure area within a computer’s hardware that actively protects against threats by isolating execution from the main OS, applications, and potentially malicious entities. TEEs protect sensitive computations from tampering or unauthorized access through an isolated, cryptographic electronic structure. They are a giant leap in the direction of privacy, authenticity, and system integrity.
The two key features of TEEs are confidentiality and attestation. A TEE prevents external entities from viewing data inside it by leveraging encrypted memory, hardware-based isolation, and remote attestation. It operates as a segregated environment within a processor, where neither hypervisors nor malicious insiders can access its contents.
Remote attestation is a cryptographic process that enables external verificati
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