A fully homomorphic-elliptic curve cryptography based encryption algorithm for ensuring the privacy preservation of the cloud data
A fully homomorphic-elliptic curve cryptography based encryption algorithm for ensuring the privacy preservation of the cloud data
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DOI：
10.1007/s10586-018-2723-9
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发表时间：
2019-07-01
影响因子：
4.4
通讯作者：
Vasudevan, V.
中科院分区：
文献类型：
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作者：
Kanna, G. Prabu;Vasudevan, V.
为云数据提供安全和隐私保护是最近几天要求很高且至关重要的任务之一。因为，敏感数据的隐私性应该受到保护，以防止未经授权的访问，以提高其安全性。因此，在传统的云隐私保护工作中，开发了各种密钥生成、加密和解密机制。然而，它仍然存在诸如增加的计算复杂度、时间消耗和降低的安全性等问题。而且，传统的作品使用的是基于对称密钥的密码体制。因此，本文的目的是开发一种新的隐私保护机制，通过实现一个完全同态椭圆曲线密码（FH-ECC）算法。数据所有者通过使用ECC算法将原始数据转换为密码格式来加密原始数据，并在将加密数据存储在云上之前对加密数据进行FH操作。当用户向云发出数据请求时，云服务提供商验证用户的访问控制策略以启用对数据的受限访问。如果访问策略被验证，则将加密数据提供给用户，从用户提取密文。然后，应用ECC解密和FH操作来生成原始文本。在多次分析的基础上，借助执行时间、加密时间和解密时间等不同的性能指标对研究工作进行了评估。此外，通过与传统技术的比较分析，证明了新的FHE技术的有效性。
Enabling a security and privacy preservation for the cloud data is one of the demanding and crucial tasks in recent days. Because, the privacy of the sensitive data should be safeguard from the unauthorized access for improving its security. So, various key generation, encryption and decryption mechanisms are developed in the traditional works for privacy preservation in cloud. Still, it remains with the issues such as increased computational complexity, time consumption, and reduced security. Also, the traditional works use the symmetric key cryptography based. Thus, this paper aims to develop a new privacy preservation mechanism by implementing a fully homomorphic-elliptic curve cryptography (FH-ECC) algorithm. The data owner encrypts the original data by converting it into the cipher format with the use of ECC algorithm, and applies the FH operations on the encrypted data before storing it on the cloud. When the user gives the data request to the cloud, the Cloud Service Provider verifies the access control policy of the user for enabling the restricted access on the data. If the access policy is verified, the encrypted data is provided to the user, from that the cipher text is extracted. Then, the ECC decryption and FH operations are applied to generate the original text. Based on the several analysis, the research work is evaluated with the help of different performance measures such as execution time, encryption time, and decryption time. In addition the effectiveness of the novel FHE technique is justified by the comparative analysis made with the traditional techniques.