TY - JOUR A2 - Tseng, H.-E. A2 - Cheng, H. AU - Lee, Sun-Ho AU - Lee, Im-Yeong PY - 2014 DA - 2014/02/12 TI - A Study of Practical Proxy Reencryption with a Keyword Search Scheme considering Cloud Storage Structure SP - 615679 VL - 2014 AB - Data outsourcing services have emerged with the increasing use of digital information. They can be used to store data from various devices via networks that are easy to access. Unlike existing removable storage systems, storage outsourcing is available to many users because it has no storage limit and does not require a local storage medium. However, the reliability of storage outsourcing has become an important topic because many users employ it to store large volumes of data. To protect against unethical administrators and attackers, a variety of cryptography systems are used, such as searchable encryption and proxy reencryption. However, existing searchable encryption technology is inconvenient for use in storage outsourcing environments where users upload their data to be shared with others as necessary. In addition, some existing schemes are vulnerable to collusion attacks and have computing cost inefficiencies. In this paper, we analyze existing proxy re-encryption with keyword search. SN - 2356-6140 UR - https://doi.org/10.1155/2014/615679 DO - 10.1155/2014/615679 JF - The Scientific World Journal PB - Hindawi Publishing Corporation KW - ER -