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Efficient Multi-key FHE with short extended ciphertexts and less public parameters
Multi-key FHE BGV scheme ciphertext extension
2018/11/2
Multi-Key Full Homomorphic Encryption scheme (MKFHE) can perform arbitrary operation on encrypted data under different public keys (users), and the final ciphertext can be jointly decrypted. Therefore...
A multi-party protocol for constructing the public parameters of the Pinocchio zk-SNARK
SNARKs zero-knowledge cryptocurrencies
2017/6/26
Recent efficient constructions of zero-knowledge Succinct Non-interactive Arguments of Knowledge (zk-SNARKs), require a setup phase in which a common-reference string (CRS) with a certain structure is...
New Revocable IBE in Prime-Order Groups: Adaptively Secure, Decryption Key Exposure Resistant, and with Short Public Parameters
Revocable identity-based encryption static assumptions asymmetric pairings
2016/12/7
Revoking corrupted users is a desirable functionality for cryptosystems. Since Boldyreva,
Goyal, and Kumar (ACM CCS 2008) proposed a notable result for scalable revocation method in
identity-based e...
Adaptively Secure Identity-Based Encryption from Lattices with Asymptotically Shorter Public Parameters
public-key cryptography Asymptotically Shorter Public Parameters
2016/2/23
In this paper, we present two new adaptively secure identity-based encryption (IBE) schemes from lattices. The size of the public parameters, ciphertexts, and private keys are O~(n2κ1/d), O~(n), and O...
Self-Updatable Encryption with Short Public Parameters and Its Extensions
Public-key encryption Self-updatable encryption Ciphertext delegation
2016/1/23
Cloud storage is very popular since it has many advantages, but there is a new threat to cloud storage that was not considered before. Self-updatable encryption that updates a past ciphertext to a fu...
Password Based Key Exchange with Hidden Elliptic Curve Public Parameters
Password Based Key Exchange Hidden Elliptic Curve Public Parameters
2009/9/27
We here describe a new Password-based Authenticated Key Exchange (PAKE) pro-
tocol based on elliptic curve cryptography. We prove it secure in the Bellare-Pointcheval-Rogaway
(BPR) model. Our propos...
On (Hierarchical) Identity Based Encryption Protocols with Short Public Parameters
Identity Based Encryption Protocols Short Public Parameters
2008/12/12
At Eurocrypt 2005, Waters proposed an efficient identity based encryption (IBE) scheme. One drawback of this scheme is that the size of the public parameter is rather large. Our first contribution is ...
On (Hierarchical) Identity Based Encryption Protocols with Short Public Parameters
Identity Encryption Protocols Short Public Parameters
2008/12/11
At Eurocrypt 2005, Waters proposed an efficient identity based encryption (IBE) scheme. One drawback of this scheme is that the size of the public parameter is rather large. Our first contribution is ...