Layer-one and layer-two solutions pose different security and efficiency challenges. Security metrics highlight the impracticality of definitively declaring one solution more secure than the other. Both solutions face inherent vulnerabilities and necessitate careful consideration in real-world applications. Layer-one systems are slower and less scalable due to distributed TEE network requirements, while layer-two solutions enhance efficiency by processing computations offline and transferring only results to online blockchains. Achieving a practically secure and confidential system requires significant advancements, particularly in the realm of security measurement.
Security metrics based on threat models reveal that comparing the security of layer-one and layer-two solutions remains challenging, as system security is multidimensional and imprecise.
Layer-one solutions involve executing contracts in a distributed TEE network which is time-consuming and less scalable. Layer-two systems improve efficiency by uploading final results to blockchains.
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