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Attribute based broadcast encryption with short ciphertext and decryption key

Chapter


Abstract


  • Attribute Based Broadcast Encryption (ABBE) is a combination of Attribute Based Encryption (ABE) and Broadcast Encryption (BE). It allows a broadcaster (or encrypter) to broadcast an encrypted message that can only be decrypted by the receivers who are within a predefined user set and satisfy the access policy specified by the broadcaster. Compared with normal ABE, ABBE allows direct revocation, which is important in many real-time broadcasting applications such as Pay TV. In this paper, we propose two novel ABBE schemes that have distinguishing features: the first scheme is key-policy based and has short ciphertext and constant size decryption key; and the second one is ciphertext-policy based and has constant size ciphertext and short decryption key. Both of our schemes allow access policies to be expressed using AND-gate with positive, negative, and wildcard symbols, and are proven secure under the Decision n-BDHE assumption without random oracles.

Publication Date


  • 2015

Citation


  • Phuong, T. V. X., Yang, G., Susilo, W., & Chen, X. (2015). Attribute based broadcast encryption with short ciphertext and decryption key. In Unknown Book (Vol. 9327, pp. 252-269). doi:10.1007/978-3-319-24177-7_13

International Standard Book Number (isbn) 13


  • 9783319241760

Scopus Eid


  • 2-s2.0-84951786053

Book Title


  • Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Start Page


  • 252

End Page


  • 269

Abstract


  • Attribute Based Broadcast Encryption (ABBE) is a combination of Attribute Based Encryption (ABE) and Broadcast Encryption (BE). It allows a broadcaster (or encrypter) to broadcast an encrypted message that can only be decrypted by the receivers who are within a predefined user set and satisfy the access policy specified by the broadcaster. Compared with normal ABE, ABBE allows direct revocation, which is important in many real-time broadcasting applications such as Pay TV. In this paper, we propose two novel ABBE schemes that have distinguishing features: the first scheme is key-policy based and has short ciphertext and constant size decryption key; and the second one is ciphertext-policy based and has constant size ciphertext and short decryption key. Both of our schemes allow access policies to be expressed using AND-gate with positive, negative, and wildcard symbols, and are proven secure under the Decision n-BDHE assumption without random oracles.

Publication Date


  • 2015

Citation


  • Phuong, T. V. X., Yang, G., Susilo, W., & Chen, X. (2015). Attribute based broadcast encryption with short ciphertext and decryption key. In Unknown Book (Vol. 9327, pp. 252-269). doi:10.1007/978-3-319-24177-7_13

International Standard Book Number (isbn) 13


  • 9783319241760

Scopus Eid


  • 2-s2.0-84951786053

Book Title


  • Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Start Page


  • 252

End Page


  • 269