Anonymity in blockchain ensures users' identities remain private, preventing linkages between users and their transactions. However, many existing systems like Bitcoin and Ethereum only implement basic pseudonym-based mechanisms, which are vulnerable to analysis. Confidentiality in these systems is also a concern, as all transactions are publicly accessible, exposing sensitive information. The MEE key, crucial for memory encryption, is generated at boot and is vital for preserving the integrity of data within enclaves, showcasing the importance of key management in maintaining security.
The MEE key is generated at boot, and is placed in special registers, and destroyed at system reset. The MEE key is used for memory encryption and decryption.
Anonymity refers to the privacy that relates to real entities, especially for users' identities, indicating that users' transaction activities will not expose any personal information.
Classic blockchain systems expose all transactions plainly where anyone can read and access, which may lead to sensitive information being leaked to malicious analyzers.
Bitcoin and Ethereum only provide a very early version of anonymity, using a pseudonym-based address mechanism, which attackers can bypass through relationship analysis.
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