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China has updated its regulations against illegal organ transplants. However, members of the political and financial elite still manage to circumvent them in military hospitals that now perform half of the country's transplants. ....
To know the most recent market conditions, an e-commerce platform needs to be aware of the sales situation of its sellers' commodities. The most recent market conditions can help to forecast future market trends and develop policies to guide sellers in reasonably allocating their inventory proportion. Statistical analysis is a fundamental approach to studying the sales situation. However, the sales data of an e-commerce platform usually has a significant volume. Therefore, outsourcing statistical analysis to cloud servers is an effective method. Nevertheless, sellers do not want their sales data leaked to anyone or any other organization. Moreover, in many circumstances, we cannot fully trust cloud servers. Thus, we need to utilize cryptographic or non-cryptographic tools to realize the above outsourcing. Secret sharing is a lightweight and powerful non-cryptographic tool to realize privacy-preserving data analysis. However, it needs secure channels to distribute secret shares. On ....
Abstract To manage outsourced encrypted data sharing in clouds, attribute-based proxy re-encryption (ABPRE) has become an elegant primitive. In ABPRE, a cloud server can transform an original recipient s ciphertext to a new one of a shared user s. As the transformation is computation consuming, a malicious cloud server may return an incorrect re-encrypted ciphertext to save its computation resources. Moreover, a shared user may accuse the cloud server of returning an incorrect re-encrypted ciphertext to refuse to pay the cost of using the cloud service. However, existing ABPRE schemes do not support a mechanism to achieve verifiability and fairness. In this paper, a novel verifiable and fair attribute-based proxy re-encryption (VF-ABPRE) scheme is introduced to support verifiability and fairness. The verifiability enables a shared user to verify whether the re-encrypted ciphertext returned by the server is correct and the fairness ensures a cloud server escape from malicious a ....
That trump, in his election, had promised different action. it wasn t perfect. but i get the question is, but he alone not be able to manipulate some of them i think this is a real test of his strength. he has a lot to prove, because our kids need to see in the classroom. melissa: kennedy, it always struck me one of the reasons why iran wanted to stay in that deal so much was because they weren t giving up anything. there were no anytime, anywhere inspections. kennedy: no verifiability. melissa: still ballistic missiles, the bottom much of money. kennedy: secrecy, you don t really know the facilities where the rhenium is being enriched. i will say this about her former boss he seems like a great guy. of all the presidency want to go hang out with and have a beer with, he seems like a great family man and a truly good person. what he did in north korea and iran made the world less safe. his foreign policy was an absolute disaster. ....