Research Article
Private Predicate Encryption for Inner Product from Key-Homomorphic Pseudorandom Function
Table 1
Comparison with other related private IPE schemes [17–19]. Here, the length of ciphertext attribute and key attribute is . and represent size of an element of and message, respectively. MSK, SK, CT, Qun. Res., GSD, C3DH, and 3FCOBGA stand for master secret key, secret key for some key attribute, ciphertext for some ciphertext attribute, quantum-resistant, general subgroup decision, composite 3-party (decisional) Diffie-Hellman, and 3-factor-based composite-order bilinear groups assumption, respectively.
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If the underlying PRF is resistant to quantum attacks, then our proposed scheme is resistant to quantum attacks. |