Tabellion: secure legal contracts on mobile devices
Tabellion: secure legal contracts on mobile devices
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Tabellion:移动设备上的安全法律合同
DOI:
10.1145/3386901.3389027
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Kim, Sung Eun
中科院分区:
文献类型:
--
作者:
Mirzamohammadi, Saeed;Liu, Yuxin;Huang, Tianmei Ann;Sani, Ardalan Amiri;Agarwal, Sharad;Kim, Sung Eun
A legal contract is an agreement between two or more parties as to something that is to be done in the future. Forming contracts electronically is desirable since it is convenient. However, existing electronic contract platforms have a critical shortcoming. They do not provide strong evidence that a contract has been legally and validly created. More specifically, they do not provide strong evidence that an electronic signature is authentic, that there was mutual assent, and that the parties had an opportunity to read the contract. We present Tabellion, a system for forming legal contracts on mobile devices, such as smartphones and tablets, that addresses the above shortcoming. We define four secure primitives and use them in Tabellion to introduce self-evident contracts, the validity of which can be verified by independent inspectors. We show how these primitives can be implemented securely in the Trusted Execution Environment (TEE) of mobile devices as well as a secure enclave in a centralized server, all with a small Trusted Computing Base (TCB). Moreover, we demonstrate that it is feasible to build a fully functional contract platform on top of these primitives. We develop ~15,000 lines of code (LoC) for our prototype, only ~1,000 of which need to be trusted. Through analysis, prototype measurements, and a 30-person user study, we show that Tabellion is secure, achieves acceptable performance, and provides slightly better usability than the state-of-the-art electronic contract platform, DocuSign, for viewing and signing contracts.
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DOI:
10.1145/3210240.3210338
发表时间:
2018-06
期刊:
Proceedings of the 16th Annual International Conference on Mobile Systems, Applications, and Services
影响因子:
--
作者:
Kailiang Ying;A. Ahlawat;B. Alsharifi;Yuexin Jiang;Priyank Thavai;Wenliang Du
通讯作者:
Kailiang Ying;A. Ahlawat;B. Alsharifi;Yuexin Jiang;Priyank Thavai;Wenliang Du
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
K. Kain
通讯作者:
K. Kain
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
F. Buccafurri;G. Caminiti;G. Lax
通讯作者:
G. Lax
DOI:
--
发表时间:
2011
期刊:
arXiv.org
影响因子:
--
作者:
Dan
通讯作者:
Dan
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
F. Anwar
通讯作者:
F. Anwar