@inproceedings{410d189c0bbf4db893a60a5ecee0561a,
title = "Functional encryption for attribute-weighted sums from k-lin",
abstract = "We present functional encryption schemes for attribute-weighted sums, where encryption takes as input N attribute-value pairs (xi,zi) where xi is public and zi is private; secret keys are associated with arithmetic branching programs f, and decryption returns the weighted sum ∑i=1 N f(xi) zi while leaking no additional information about the zi{\textquoteright}s. Our main construction achieves(1) compact public parameters and key sizes that are independent of N and the secret key can decrypt a ciphertext for any a-priori unbounded N;(2) short ciphertexts that grow with N and the size of zi but not xi;(3) simulation-based security against unbounded collusions;(4) relies on the standard k-linear assumption in prime-order bilinear groups.",
author = "Michel Abdalla and Junqing Gong and Hoeteck Wee",
note = "Publisher Copyright: {\textcopyright} International Association for Cryptologic Research 2020.; 40th Annual International Cryptology Conference, CRYPTO 2020 ; Conference date: 17-08-2020 Through 21-08-2020",
year = "2020",
doi = "10.1007/978-3-030-56784-2\_23",
language = "英语",
isbn = "9783030567835",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer",
pages = "685--716",
editor = "Daniele Micciancio and Thomas Ristenpart",
booktitle = "Advances in Cryptology - CRYPTO 2020 - 40th Annual International Cryptology Conference, CRYPTO 2020, Proceedings",
address = "德国",
}