A novel data sharing model for cloud environment using dual key authentication Online publication date: Fri, 04-Sep-2020
by Gowtham Mamidisetti; Ramesh Makala
International Journal of Cloud Computing (IJCC), Vol. 9, No. 2/3, 2020
Abstract: In the present world scenario, cloud computing plays a significant role in sharing of data between computing devices in a secure manner. Specifically, data sharing amongst dynamic or static groups has grown as a major factor. For this purpose, the study proposed a dual key authentication-based dynamic group data sharing model in a cloud environment. First, data are encrypted before sharing using AES algorithm. Here, data is stored in the form of string instead of bytes which can reduce the memory size without affecting the original data. Second, the cryptographic approach is applied to overcome the issues of computational load and key length maintenance. A subkey is generated for the private key, wherein each user will receive a different subkey. Third, enabled the prevention of secret data from collusion attack and improved the malicious activity prediction during data transfer. So, that the revoked user unable to violate the data confidentiality. Also, the original data cannot be decrypted by anyone even if they receive it. Finally, this study evaluated the performance of proposed cloud security model with the existing methods, especially PRE, CL-PRE and SaDaSc.
Online publication date: Fri, 04-Sep-2020
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