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Nowadays, Internet of things (IoT) become more and more popular. At the same time, the requirements of security mechanism for multimedia in IoT received a huge concern. Multimedia data is easily shared by devises, applications and social networks set by IoT. Therefore, it is indispensable to guarantee the privacy and security of shared multimedia data. In this paper, we address the secure multimedia...
In a proxy re-encryption (PRE) scheme, a semi-trusted proxy can convert a ciphertext under Alice's public key into another ciphertext that Bob can decrypt without accessing the underlying plaintext. This property adds flexibility in various applications, such as cloud data sharing. In this paper, we study CCA-secure, single-hop unidirectional PRE schemes without pairings. We gain high efficiency and...
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