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Blockchain-based Electronic Medical Record Sharing FrameworkUsing Ciphertext Policy Attribute-Based Cryptography for patient's anonymity  

Baek, Seungsoo (고려대학교 정보보호대학원 정보보호학과)
Publication Information
Convergence Security Journal / v.19, no.1, 2019 , pp. 49-60 More about this Journal
Abstract
Medical record is part of the personal information that values the dignity and value of an individual, and can lead to serious social prejudice and disadvantage to an individual when it is breached illegally. In addition, the medical record has been highly threatened because its value is relatively high, and external threats are continuing. In this paper, we propose a medical record sharing framework that guarantees patient's privacy based on blockchain using ciphertext policy-based attribute based proxy re-encryption scheme. The proposed framework first uses the blockchain technology to ensure the integrity and transparency of medical records, and uses the stealth address to build the unlinkability between physician and patient. Besides, the ciphertext policy attribute-based proxy re-encryption scheme is used to enable fine-grained access control, and it is possible to share information in emergency situations without patient's agreement.
Keywords
Electric Medical Record; Blockchain; Ciphertext-policy Attribute based Proxy Re-encryption;
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  • Reference
1 Humer, Caroline, and Jim Finkle. "Your medical record is worth more to hackers than your credit card." Reuters.com US Edition 24 (2014).
2 Monero, "How does monero's privacy work?" https://www.monero.how/how-does-monero-privacy-work (2018.11.11.접속)
3 Liang, Kaitai, et al. "A ciphertext-policy attribute-based proxy re-encryption with chosen-ciphertext security." Intelligent Networking and Collaborative Systems (INCoS), 2013 5th International Conference on. IEEE, 2013.
4 Nakamoto, Satoshi. "Bitcoin: A peer-to-peer electronic cash system." (2008).
5 Mambo, Masahiro, and Eiji Okamoto. "Proxy cryptosystems: Delegation of the power to decrypt ciphertexts." IEICE transactions on fundamentals of electronics, Communications and computer sciences 80.1 (1997): 54-63.
6 Liang, Xiaohui, et al. "Attribute based proxy re-encryption with delegating capabilities." Proceedings of the 4th International Symposium on Information, Computer, and Communications Security. ACM, 2009.
7 Luo, Song, Jianbin Hu, and Zhong Chen. "Ciphertext policy attribute-based proxy re-encryption." International Conference on Information and Communications Security. Springer, Berlin, Heidelberg, 2010.
8 Azaria, Asaph, et al. "Medrec: Using blockchain for medical data access and permission management." Open and Big Data (OBD), International Conference on. IEEE, 2016.
9 Conti, Mauro, et al. "A survey on security and privacy issues of bitcoin." IEEE Communications Surveys & Tutorials (2018).
10 MedicalChain, "whitepaper v2.0," https://medicalchain.com/en/ (2018.11.11.접속)
11 MedicalBlock, "whitepaper v1.0," https://medicalchain.com/ko/ (2018.11.11.접속)