Results 241 to 250 of about 2,507,070 (273)

Identity-Based Conditional Proxy Re-Encryption

2011 IEEE International Conference on Communications (ICC), 2011
This paper proposes a new cryptographic primitive, named identity-based conditional proxy re-encryption (IBCPRE). In this primitive, a proxy with some information (a.k.a. re-encryption key) is allowed to transform a subset of ciphertexts under an identity to other ciphertexts under another identity.
Jun Shao 0001, Guiyi Wei, Yun Ling, Mande Xie   +3 more
openaire   +1 more source

Certificateless Proxy Re-Encryption Without Pairings

2014
Proxy re-encryption (PRE) allows a proxy with re-encryption keys to transform a ciphertext under a given public key into a ciphertext of the same message under a different public key, and can not learn anything about the encrypted message. Due to its transformation property, PRE has many practical applications such as cloud storage, confidential email,
Kang Yang 0002, Jing Xu 0002, Zhenfeng Zhang   +2 more
openaire   +1 more source

Proxy Re-Encryption Based on Homomorphic Encryption

Proceedings of the 33rd Annual Computer Security Applications Conference, 2017
In this paper, we propose an homomorphic proxy re-encryption scheme (HPRE) that allows different users to share data they outsourced homomorphically encrypted using their respective public keys with the possibility by next to process such data remotely.
Bellafqira, Reda, Coatrieux, Gouenou, Bouslimi, Dalel, Quellec, Gwénolé, Cozic, Michel   +4 more
openaire   +1 more source

Factoring-Based Proxy Re-Encryption Schemes

2013
Proxy re-encryption (PRE) realizes delegation of decryption rights, enabling a proxy holding a re-encryption key to convert a ciphertext originally intended for Alice into an encryption of the same message for Bob, and cannot learn anything about the encrypted plaintext.
Toshiyuki Isshiki, Manh Ha Nguyen, Keisuke Tanaka   +2 more
openaire   +2 more sources

Cryptanalysis of a Certificateless Proxy Re-encryption Scheme

2013 Fourth International Conference on Emerging Intelligent Data and Web Technologies, 2013
Recently, Sur et al. introduced a new primitive named certificateless proxy re-encryption, which enjoys the advantages of certificateless public key cryptography while providing the functionalities of proxy re-encryption. They further proposed a certificateless proxy re-encryption scheme, and claimed that their scheme is secure against chosen-cipher ...
Yulin Zheng, Shaohua Tang, Chaowen Guan, Min-Rong Chen   +3 more
openaire   +2 more sources

Elliptic Curve Based Proxy Re-Encryption

Proceedings of the Second International Conference on Information and Communication Technology for Competitive Strategies, 2016
Proxy re-encryption is a scheme where a semi-trusted proxy alters the confidential message of one party into a confidential message of another party without knowing the original plaintext. To do the same, various approaches are suggested in the public key set up cryptography.
V. Thangam, K. Chandrasekaran 0001
openaire   +2 more sources

Multi-key Homomorphic Proxy Re-Encryption

2018
In this paper, we propose a new notion of multi-key homomorphic proxy re-encryption (MH-PRE) in which inputs of homomorphic evaluation are encrypted by different public keys and the evaluated ciphertext is decrypted by a single secret key. We obtain it by adding the re-encryption property of proxy re-encryption to multi-key homomorphic encryption (MHE).
Satoshi Yasuda, Yoshihiro Koseki, Ryo Hiromasa, Yutaka Kawai   +3 more
openaire   +2 more sources

Certificate-Based Conditional Proxy Re-Encryption

2014
A proxy re-encryption scheme (PRE) allows a semi-trusted proxy to convert a ciphertext encrypted under one key into an encryption of the same plaintext under another key. In the process of the arithmetic processing, proxy should be able to learn as little information about the plaintext as possible. Conditional proxy re-encryption (CPRE) is a primitive
Jiguo Li 0001, Xuexia Zhao, Yichen Zhang 0003   +2 more
openaire   +1 more source

A Homomorphic Proxy Re-encryption from Lattices

2016
In this paper, we present a unidirectional homomorphic proxy re-encryption PRE scheme from learning with errors assumption, which can homomorphically evaluates ciphertexts at input or output side, no matter ciphertexts are fresh or re-encrypted re-encrypted ciphertexts can come from different identities.
Chunguang Ma, Juyan Li, Weiping Ouyang
openaire   +2 more sources

Proxy Re-encryption

2021
Jian Weng, Junzuo Lai
openaire   +1 more source