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Title:	Re-encryption Method designed by Row Complete Matrix
Authors:	曾正男 Chen, I-Te;Tsai, Jer-Min;Tzeng, Jengnan
Contributors:	應數系
Date:	2012
Issue Date:	2014-05-22 11:14:51 (UTC+8)
Abstract:	With the prevalence of Internet access, document storage has become a fundamental web service in recent years. One important topic is how to design a secure channel for efficiently sharing documents with another receiver. In this paper, we demonstrate a re-encryption method that is designed with row complete matrices. With this new method, the document owner can share a ciphertext in the cloud with another receiver by sending a serial number to the server and giving the receiver a corresponding key at the same time. This method ensures that the server cannot obtain the information about key and plaintext and that the receiver cannot obtain the original key of the owner either. Only the owner has the knowledge of all the information. Using this reencryption system, the cloud server can provide a secure file-sharing service without worrying about the shared key management problem. Moreover, the cost of re-encryption will not increase even when the encryption is strengthened with longer encryption keys.
Relation:	Mathematical Problems in Engineering, 2012, Article ID 402890
Data Type:	article
DOI 連結:	http://dx.doi.org/10.1155/2012/402890
DOI:	10.1155/2012/402890
Appears in Collections:	[應用數學系] 期刊論文

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