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. 2019 Aug 31;21(8):e13592. doi: 10.2196/13592

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©Ray Hales Hylock, Xiaoming Zeng. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 31.08.2019.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Transmission size in kilobytes and bytes per record by the number of records inserted. ADF: AES-encrypted data, dynamic keys, full block storage; ADI: AES-encrypted data, dynamic keys, incremental storage; AES: Advanced Encryption Standard; ASF: AES-encrypted data, static keys, full block storage; ASI: AES-encrypted data, static keys, incremental storage; PDF: PRE-encrypted data, dynamic keys, full block storage; PDI: PRE-encrypted data, dynamic keys, incremental storage; PRE: proxy re-encryption; PSF: PRE-encrypted data, static keys, full block storage; PSI: PRE-encrypted data, static keys, incremental storage.