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As cloud computing has developed rapidly, outsourcing data to cloud servers for remote storage has become an attractive trend. However, when cloud clients store their data in the cloud, the security and privacy of cloud data would be threatened due to accidental corruptions or purposive attacks caused by a semi-trusted cloud server. The widely used method of addressing the security and privacy of cloud data is to store encrypted data instead of plain data. As the resulting system is unusable, since the cloud can no longer search throughout the data, new cryptographic primitive such as public-k...

Padma Bridge: How Bangladesh defied the odds to achieve a technical masterstroke

With the rapid growth of cloud storage and cloud computing services, many organizations and users choose to store the data on a cloud server for saving costs. However, due to security concerns, data of users would be encrypted before sending to the cloud. However, this hinders a problem of computation on encrypted data in the cloud, especially in the case of performing data matching in various medical scenarios. Public key encryption with equality test (PKEET) is a powerful tool that allows the authorized cloud server to check whether two ciphertexts are generated by the same message. PKEET ha...

Public key encryption with equality test (PKEET) can check whether two ciphertexts are encrypted from the same message or not without decryption. This attribute enables PKEET to be increasingly utilized in cloud storage, where users store their encrypted data on the cloud. In traditional PKEET, the tester is authorized by the data receiver to perform equality test on its ciphertexts. However, the tester can only test one ciphertext or all ciphertexts of one receiver with one authorization. It means that the receiver cannot adaptively authorize the test right of any number of ciphertexts to the...

Refill Deutschland: Jede zweite Trinkwasser-Station ist keimbelastet Stand: 18.07.2021 | Lesedauer: 4 Minuten Quelle: picture alliance/dpa An 5600 Trinkbrunnen und Refill-Stationen können Bürger kostenlos Leitungswasser zapfen. Eine Untersuchung zeigt: Gesund ist das nicht überall. Die Mineralwasserwirtschaft fordert strengere Kontrollen der Angebote. Anzeige Der Name sagt eigentlich schon alles. Refill Deutschland heißt eine 2017 gegründete Initiative, die für mittlerweile knapp 5600 Trinkbrunnen und Auffüllstationen hierzulande steht. Überall dort können sich die Verbraucher k...