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Existing protocols for archival systems make use of verifiability of shares in conjunction with a proactive secret sharing scheme to achieve high availability and long term confidentiality, besides data integrity. In this paper, we extend an existing protocol (Wong et al. [2002]) to take care of more realistic situations. For example, it is assumed in the(More)
Protocols for secure archival storage are becoming increasingly important as the use of digital storage for sensitive documents is gaining wider practice. In [8], Wong et al. combined verifiable secret sharing with proactive secret sharing without reconstruction and proposed a verifiable secret redistribution protocol for long term storage. However, their(More)
A narrative is a brief summary of specific events experienced by patients, during the course of a clinical trial. Narrative writing involves multiple activities such as generation of patient profiles, review of data sources, and identification of events for which narratives are required. A sponsor outsources narrative writing activities to leverage the(More)
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