Abstract
Certificateless cryptography eliminates the key escrow problem inherent in identity based cryptosystem. Certificatateless systems are preferred in public cloud to offer security because it solves two different problems simultaneously, namely, the key escrow problem and the cumbersome certificate management. A stateful public key encryption scheme is a cryptographic primitive, in which the sender maintains state information to perform encryption. The encryption algorithm takes the intended message, receiver’s public key and the current state information to produce the ciphertext, and possibly updates the state information. Decryption is straightforward and depends only on the ciphertext and secret key of the receiver. In this paper, we propose the first stateful certificateless public key encryption scheme and prove the security of the scheme in the random oracle model. This scheme finds very interesting application for sharing data in an encrypted cloud storage system.
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Sree Vivek, S. (2015). Stateful Certificateless Public Key Encryption with Application in Public Cloud. In: Bica, I., Naccache, D., Simion, E. (eds) Innovative Security Solutions for Information Technology and Communications. SECITC 2015. Lecture Notes in Computer Science(), vol 9522. Springer, Cham. https://doi.org/10.1007/978-3-319-27179-8_10
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DOI: https://doi.org/10.1007/978-3-319-27179-8_10
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