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Decentralized attribute-based encryption (ABE) is a variant of a multiauthority ABE scheme where each authority can issue secret keys to the user independently without any cooperation and a central authority. This is in contrast to the previous constructions, where multiple authorities must be online and setup the system interactively, which is impractical. Hence, it is clear that a decentralized...
Consider several groups engaged in a single project. Group members of one group happens to communicate with other group members. How might the communication among the members be carried out securely? How to ensure that a group member of one group communicate securely with its own group and with other group members as well?. We predict that secure group key management schemes for simultaneous multiple...
This paper introduces a new (t, n) secret sharing scheme for image encryption. The proposed method encrypts the secret image into two images as the same size of the original image, which one is the public image (called the encrypted image) and another is to be shared among n participants using a new secret sharing method based on the Shamir’s secret sharing. In the new secret sharing scheme, t (or...
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