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Conditional proxy re-encryption

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 https://mckenney-martinson.com

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

Proxy Re-Encryption: Analysis of constructions and its …

Category:Attribute-Based Conditional Proxy Re-Encryption in the …

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Conditional proxy re-encryption

Attribute-Based Conditional Proxy Re-Encryption in the …

WebNov 30, 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 proxy and then decrypted by delegatee. Nonetheless, they left an open problem on how to construct CCA-secure C-PRE schemes with anonymity. Fang et … WebOct 9, 2014 · Conditional 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,...

Conditional proxy re-encryption

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WebAnonymous conditional proxy re-encryption (ACPRE) requires the proxy not knowing which condition the cipher text associated with. PRES is a primitive which allows the proxy simultaneously re-encrypt and search the delegator's cipher text. Based on the PRES proposed by Shao et al., We show the definition of constrained proxy re-encryption with ...

WebConditional Proxy Broadcast Re-Encryption (CPBRE), which was proposed by Chu et al. [14], can further reduce the cost incurred by TR-PRE. Speci - cally, CPBRE allows a delegator to delegate the decryption rights of a broadcast encryption to a set of delegatees, and to specify a condition to control the re-encryption power of the proxy. In CPBRE ... WebAttribute-based conditional proxy re-encryption (AB-CPRE) allows delegators to carry out attribute-based control on the delegation of decryption by setting policies and attribute vectors. The fine-grained control of AB-CPRE makes it suitable for a variety of applications, such as cloud storage and distributed file systems.

WebJun 9, 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. Due to the specific transformation, … http://www.mysmu.edu/faculty/xhding/publications/Conditional%20Proxy%20Re-encryption%20Secure%20against%20Chosen-ciphertext%20Attack.pdf

WebAug 4, 2012 · A FC-PRE scheme allows for a proxy with the re-encryption key for a conditional keyword set, W, to re-encrypt a ciphertext encrypted with a conditional keyword set, W ′, if and only if W and W ′ are close to each other as measured by the “set overlap” distance metric.

WebNov 4, 2024 · Proxy re-encryption (PRE) has been shown to be an effective tool of constructing cryptographically enforced access control schemes. In a traditional PRE scheme, a semi-trusted proxy can convert all ciphertexts for a delegator to ciphertexts for a delegatee once the proxy obtains the relevant re-encryption key from the delegator. butler pairs scoring in bridgeWebOct 2, 2024 · Attribute-based conditional proxy re-encryption (AB-CPRE) allows delegators to carry out attribute-based control on the delegation of decryption by setting … cdc the bums and the beesWebA proxy re-encryption (PRE) scheme supports the delegation of decryption rights via a proxy, who makes the ciphertexts decryptable by the delegatee. PRE is useful in … butler pa italian festival 2022WebTo overcome the limitation of existing PRE systems, we introduce the notion of conditional proxy re-encryption (C-PRE), whereby only ci-phertext satisfying a specific … butler pa junior high wrestling facebookWebProxy re-encryption (PRE) allows a semi-trusted proxy with a re-encryption key to transform a ciphertext intended for Alice (i.e. delegator) to another ciphertext intended for … cdc the gambiaWebAttribute-based conditional proxy re-encryption (AB-CPRE) allows delegators to carry out attribute-based control on the delegation of decryption by setting policies and attribute … cdc. the happy yearsWebKeywords: conditional attribute-based proxy re-encryption, honestly re-encryption attacks, learning with errors 1 Introduction As for everyone familiar with public-key cryptography, certainly don’t be unfa-miliar with proxy re-encryption [4], a cryptographic primitive proposed by Blaze, Bleumer, and Strauss. cdc therapies