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Ekiden: A Platform for Confidentiality-Preserving, Trustworthy, and Performant Smart Contract Execution, #15

Open Veiasai opened 5 years ago

Veiasai commented 5 years ago

https://arxiv.org/pdf/1804.05141.pdf

Veiasai commented 5 years ago

smart contract 智能合约，在区块链上运行的程序。 http://liyuechun.org/2017/09/18/smart-contract/ TEE Trusted Execution Environment 可信执行环境 https://blog.csdn.net/fengbingchun/article/details/78657188

Veiasai commented 5 years ago

side channel 边信道攻击 针对加密电子设备在运行过程中的时间消耗、功率消耗或电磁辐射之类的侧信道信息泄露而对加密设备进行攻击的方法被称为边信道攻击。这类新型攻击的有效性远高于密码分析的数学方法，因此给密码设备带来了严重的威胁。

Veiasai commented 5 years ago

SGX Intel Software Guard Extensions https://blog.csdn.net/sunshine_dawn/article/details/70138932

Veiasai commented 5 years ago

设计一个TEE与BlockChain结合的系统。

  1. 没有同步锁，没有统一时间，使得验证信息有效和持久化变得困难。 "we leverage the confidentiality of TEEs so that an attacker delaying a timer's responses can not prevent an enclave from successfully verifying blockchain contents"
Veiasai commented 5 years ago

现有智能合约运行平台的问题： full-node execution， confidentiality