ABSTRACT:
Cloud computing has become
increasingly popular among users and businesses around the world. Although
cryptographic techniques can provide data protection for users in public cloud,
several issues also remain problematic, such as secure data group dissemination
and fine-grained access control of time-sensitive data. In this paper, we
propose an identity based data group sharing and dissemination scheme in public
cloud, in which data owner could broadcast encrypted data to a group of
receivers at one time by specifying these receivers’ identities in a convenient
and secure way. In order to achieve secure and flexible data group
dissemination, we adopt attribute-based and timed-release conditional proxy
re-encryption to guarantee that only data disseminators whose attributes
satisfy the access policy of encrypted data can disseminate it to other groups
after the releasing time by delegating a re-encryption key to cloud server. The
re-encryption conditions are associated with attributes and releasing time, which
allows data owner to enforce fine-grained and timed-release access control over
disseminated ciphertexts. The theoretical analysis and experimental results
show our proposed scheme makes a tradeoff between computational overhead and
expressive dissemination conditions.
SYSTEM REQUIREMENTS:
HARDWARE REQUIREMENTS:
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System : Pentium Dual Core.
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Hard Disk : 120 GB.
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Monitor : 15’’ LED
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Input Devices : Keyboard, Mouse
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Ram : 1 GB
SOFTWARE REQUIREMENTS:
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Operating system : Windows 7.
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Coding Language : JAVA/J2EE
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Tool : Netbeans 7.2.1
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Database : MYSQL
REFERENCE:
Qinlong Huang, Member, IEEE, Yixiang
Yang and Jingyi Fu, “Secure Data Group Sharing and Dissemination with Attribute
and Time Conditions in Public Cloud”, IEEE Transactions on Services Computing,
2018.