Identity-based conditional proxy re-encryption (IBCPRE) is a type of proxy re-encryption (PRE) scheme in the identity-based public key cryptographic setting. An IBCPRE scheme is a natural extension of proxy re-encryption on two aspects. The first aspect is to extend the proxy re-encryption notion to the … See more A public-key encryption scheme allows anyone who has the public key of a receiver to encrypt messages to the receiver using the public key in such a way that only the corresponding private key known only to the … See more A related concept to proxy re-encryption called decrypt right delegation was introduced by Mambo and Okamoto in 1997. Then in 1998, Blaze, Bleumer and Strauss formalized … See more One of the key features of IBCPRE is that when a data owner encrypts messages, the encryption is done for themselves and only they themselves can decrypt the encrypted … See more Consider a user Alice who encrypts some messages M1, M2, …, Mt with a tag ‘Private’, Mt+1, Mt+2, …, Mm with a tag ‘toShareWithFamily’, … See more • ID-based encryption • ID-based cryptography • Proxy re-encryption See more WebConditional proxy re-encryption (CPRE) enables delegation of decryption rights, and is useful in many applications. In this paper, we present a ciphertext-policy attribute based CPRE scheme, together with a formalization of the primitive and its security proof. We further propose applying the scheme for fine-grained encryption of cloud data.
Proxy Re-Encryption: Analysis of constructions and its …
WebProxy re-encryption schemes are similar to traditional symmetric or asymmetric encryption schemes, with the addition of two functions: Delegation – allows a message … WebMar 27, 2015 · Conditional Identity-Based Broadcast Proxy Re-Encryption and Its Application to Cloud Email Abstract: Recently, a number of extended Proxy Re … cdc thb om
Fuzzy conditional proxy re-encryption SpringerLink
WebJun 1, 2024 · Proxy re-encryption is a special type of public-key encryption that permits a proxy to transform ciphertexts from one public key to another, without the proxy being able to learn any information about the original message. ... Jian , Deng, Robert H., Ding, Xuhua, Chu, Cheng-Kang, Lai, Junzuo, 2009. Conditional proxy re-encryption secure against ... WebNov 1, 2012 · Weng et al. introduced the notion of conditional proxy re-encryption (or C-PRE, for short), whereby only the ciphertext satisfying one condition set by the delegator can be transformed by the... WebJun 9, 2011 · Abstract: 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. butler pa interactive radar