GGH+13c] Garg, S., Gentry, C., Halevi, S., Sahai, A., Waters, B.: Attribute-based encryption for circuits from multilinear maps. In: Canetti, R., Garay, J.A. (eds.) CRYPTO 2013, Part II. LNCS, vol. 8043, pp. 479–499. Springer, Heidelberg (2013)...
In this paper, we present the first ciphertext-policy attribute-based encryption (CP-ABE) scheme for polynomial-size general circuits based on bilinear maps which is more suitable for practical use and more efficient than multilinear maps. Our scheme uses a top-down secret sharing and FANOUT gat...
Attribute-Based Encryption for a Subclass of Circuits with Bounded Depth from Lattices Attribute-Based Encryption for a Subclass of Circuits with Bounded Depth from LatticesIn this work, we present two Key-Policy Attribute-Based Encryption (ABE) schemes for some subclass of circuits based on the Le...
Garg, S., Gentry, C., Halevi, S., Sahai, A., Waters, B.: Attribute-based encryption for circuits from multilinear maps. In: Canetti, R., Garay, J.A. (eds.) CRYPTO 2013. LNCS, vol. 8043, pp. 479–499. Springer, Heidelberg (2013). https://doi.org/ 10.1007/978-3-642-40084...
attribute-based encryption schemes for general circuit is difficult and has been a hot topic.It is really an interesting work to design schemes that be able to realize decryption policies representable as polynomial-size circuits.Based on the existence of multilinear maps,Garg et al.provided the ...
input/output equivalent circuits • a (b+c) vs. ab + ac 7 Vision: IO as hub for cryptography Indistinguishabilty Obfuscation Standard Assumption (e.g. LWE) “Most” of cryptography This talk + OWFs How do we build public key encryption from ...
Hierarchical ABE also allows for proxy re-encryption, but it forces a fixed structure for the access policies, limiting the flexibility of the access control system. In [18], Sedaghat et al. presented a decryption outsourceable Ciphertext-Policy Attribute-Based Signcryption (CP-ABSC) construction...
Ciphertext Policy Attribute-Based Encryption for Circuits from LWE Assumption Chapter © 2020 Notes Essentially, the BKP framework used the GS proof for linear equations and replaced the GS commitment with the Pedersen commitment. The IBKEM can be straightforwardly extended to one with large ke...
Garg, S., Gentry, C., Halevi, S., Sahai, A., Waters, B.: Attribute-based encryption for circuits from multilinear maps. In: Canetti, R., Garay, J.A. (eds.) CRYPTO 2013, Part II. LNCS, vol. 8043, pp. 479–499. Springer, Heidelberg (2013) 5. Herranz, J., Laguillaumie, ...
However, in the traditional PRE systems, the communication model is one-to-one (i.e., one delegator to one delegatee), which means that a message can be re-encrypted for only a single public key. This limits their utility in many applications, where the re-encryption may be used for ...