Conditional proxy re-encryption

Author: enkd

August undefined, 2024

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 ... WebProxy 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 …

Chosen-ciphertext secure anonymous conditional proxy re-encryption …

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 1, 2024 · Conditional proxy re-encryption (CPRE) enables fine-grained delegation of decryption rights, and has many real-world applications. In this paper, we present a ciphertext-policy attribute based CPRE scheme, together with a formalization of the primitive and its security analysis. We demonstrate the utility of the scheme in a cloud deployment ... top notch collision

Fine-grained Conditional Proxy Re-encryption and …

WebConditional proxy re-encryption (CPRE) aims at restricting the transfor-mation capability of the proxy, such that a transformation by the proxy can succeed only if the prescribed … WebDec 1, 2011 · Conditional proxy re-encryption (CPRE) is a primitive which only allows those cipher texts satisfying the condition can be re-encrypted correctly by the proxy. Anonymous conditional proxy... WebMar 27, 2015 · Conditional Identity-Based Broadcast Proxy Re-Encryption and Its Application to Cloud Email Abstract: Recently, a number of extended Proxy Re-Encryptions (PRE), e.g. Conditional (CPRE), identity-based PRE (IPRE) and broadcast PRE (BPRE), have been proposed for flexible applications. top notch colleges

Conditional Proxy Broadcast Re-Encryption SpringerLink

A New Kind of Conditional Proxy Re-Encryption for …

WebJul 19, 2015 · A proxy re-encryption (PRE) allows a data owner to delegate the decryption rights of some encrypted data stored on the cloud without revealing the dat ... Kaitai Liang, Willy Susilo, Joseph K. Liu, Duncan S. Wong, Efficient and Fully CCA Secure Conditional Proxy Re-Encryption from Hierarchical Identity-Based Encryption, The Computer … WebProxy re-encryption schemes are similar to traditional symmetric or asymmetric encryption schemes, with the addition of two functions: Delegation – allows a message … pine needles matthews ncWebA Novel Revocable and Identity-Based Conditional Proxy Re-Encryption Scheme With Ciphertext Evolution for Secure Cloud Data Sharing . Proxy re-encryption (PRE), with the unique ciphertext transformation ability, enables various ciphertext authorization applications to be implemented efficiently. However, most existing PRE schemes mainly focus ... top notch collision chandler az

"WebSep 1, 2024 · Conditional proxy re-encryption. An CPRE scheme with fine-grained access policy comprises the following algorithms [34]. (1) Setup (1 λ): The setup … " - Conditional proxy re-encryption

Conditional proxy re-encryption

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,... WebNov 4, 2024 · A New Kind of Conditional Proxy Re-Encryption for Secure Cloud Storage. Abstract: Secure cloud storage has important applications in our big data-driven society, …

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WebA 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 … WebJun 3, 2024 · Weng, Deng and Chu put forward the concept of conditional proxy re-encryption 17. In conditional proxy re-encryption scheme, only cipher-text that meets certain conditions can be re-encrypted by ...

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. WebDec 1, 2024 · In this paper, we propose a timed-release proxy conditional reencryption scheme for cloud computing. Not only is the privacy of users' files guaranteed but also each user can freely share some...

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.

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

WebKeywords: 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. pine needles lodge and golf club menuWebAug 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. top notch collision smackover arWebJun 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, … pine needles microwaveWebWeng 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. ... top notch communicationsWebKeywords: Conditional proxy re-encryption · Learning with errors · Fine-grained control 1 Introduction Proxy 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 Bob (i.e.delegatee) without revealing the underlying plaintext [5]. top notch collision lawrenceville gaWebOct 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 … pine needles lyriucsWebConditional 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 ... top notch comedy