Results 11 to 20 of about 2,507,070 (273)
Universal Proxy Re-Encryption [PDF]
, 2021 We put forward the notion of universal proxy re-encryption (UPRE). A UPRE scheme enables a proxy to convert a ciphertext under a (delegator) public key of any existing public-key encryption (PKE) scheme into another ciphertext under a (delegatee) public key of any existing PKE scheme (possibly different from the delegator one).
Nico Döttling, Ryo Nishimaki
core +5 more sources
Key-Private Proxy Re-encryption [PDF]
, 2009 Proxy re-encryption (PRE) allows a proxy to convert a ciphertext encrypted under one key into an encryption of the same message under another key. The main idea is to place as little trust and reveal as little information to the proxy as necessary to allow it to perform its translations. At the very least, the proxy should not be able to learn the keys
ATENIESE, GIUSEPPE +2 more
core +7 more sources
Efficient Unidirectional Proxy Re-Encryption [PDF]
, 2010 Proxy re-encryption (PRE) allows a semi-trusted proxy to convert a ciphertext originally intended for Alice into one encrypting the same plaintext for Bob. The proxy only needs a re-encryption key given by Alice, and cannot learn anything about the plaintext encrypted.
Sherman S. M. Chow +3 more
core +8 more sources
Identity-Based Proxy Re-encryption [PDF]
, 2007 In a proxy re-encryption scheme a semi-trusted proxy converts a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. A number of solutions have been proposed in the public-key setting. In this paper, we address the problem of Identity-Based proxy re-encryption, where ciphertexts are transformed from one identityto ...
Matthew Green, ATENIESE, GIUSEPPE
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A Timed-Release Proxy Re-Encryption Scheme [PDF]
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2011 Timed-Release Encryption (TRE) is a kind of time-dependent encryption, where the time of decryption can be controlled. More precisely, TRE prevents even a legitimate recipient decrypting a ciphertext before a semi-trusted Time Server (TS) sends trapdoor sT assigned with a release time T of the encryptor's choice. Cathalo et al. (ICICS2005) and Chalkias
Keita Emura +2 more
openaire +3 more sources
Revocable attribute-based proxy re-encryption [PDF]
Journal of Mathematical Cryptology, 2021 Attribute-based proxy re-encryption (ABPRE), which combines the notions of proxy re-encryption (PRE) and attribute-based encryption (ABE), allows a semi-trusted proxy with re-encryption key to transform a ciphertext under a particular access policy into ...
Luo Fucai, Al-Kuwari Saif
doaj +3 more sources
Attribute-based proxy re-encryption scheme with multiple features [PDF]
Tongxin xuebao, 2019 A ideal proxy re-encryption scheme has five features,such as one-way encryption,non-interaction,repeatability,controllability and verifiability.The existing schemes,however,have only two or three of the five features,which reduces the utility of them to ...
Chaosheng FENG +4 more
doaj +4 more sources
Non-Transferable Proxy Re-Encryption Scheme [PDF]
2012 5th International Conference on New Technologies, Mobility and Security (NTMS), 2012 A proxy re-encryption (PRE) scheme allows a proxy to re-encrypt a ciphertext for Alice (delegator) to a ciphertext for Bob (delegatee) without seeing the underlying plaintext. However, existing PRE schemes generally suffer from at least one of the followings.
Hui, CK, Yiu, SM, Chim, TW, He, Y
openaire +3 more sources
Shared and searchable encrypted data for untrusted servers [PDF]
, 2011 Current security mechanisms are not suitable for organisations that outsource their data management to untrusted servers. Encrypting and decrypting sensitive data at the client side is the normal approach in this situation but has high communication and ...
Dong, Changyu +2 more
core +4 more sources
Provably Secure Identity-based Conditional Proxy Re-encryption Scheme [PDF]
Jisuanji gongcheng, 2017 The conditional proxy re-encryption based on the traditional public key cryptosystem is mature,but the Identity-based Proxy Re-encryption(IBPRE) scheme,controlling agents’ permissions from the fine-grained level is a problem needed to be solved.Thus,this
YE Weiwei,OU Qingyu,WEI Wei
doaj +1 more source