Attribute-based encryption schemes with constant-size ciphertexts
Nuttapong Attrapadung,Javier Herranz,Fabien Laguillaumie,Benoît Libert,Élie de Panafieu,Carla Ràfols +5 more
TL;DR: This paper proposes the first attribute-based encryption (ABE) schemes allowing for truly expressive access structures and with constant ciphertext size and describes a new efficient identity-based revocation mechanism that gives rise to the most expressive KP-ABE realization with constant-size ciphertexts.
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About: This article is published in Theoretical Computer Science. The article was published on 01 Mar 2012. and is currently open access. The article focuses on the topics: Attribute-based encryption & Probabilistic encryption.
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Citations
Attribute-Based Encryption With Verifiable Outsourced Decryption
TL;DR: This paper gives the formal model of ABE with verifiable outsourced decryption and proposes a concrete scheme that is both secure and verifiable, without relying on random oracles and shows an implementation of the scheme and result of performance measurements, which indicates a significant reduction on computing resources imposed on users.
498
Attribute-Based Encryption with Fast Decryption
Susan Hohenberger,Brent Waters +1 more
- 26 Feb 2013
TL;DR: This paper presents an implementation ofAttribute-based encryption (ABE) that allows users to encrypt and decrypt messages based on user attributes at a cost that is proportional to the number of attributes associated with it.
User Collusion Avoidance CP-ABE With Efficient Attribute Revocation for Cloud Storage
TL;DR: This work formalizes the definition and security model, which model collusion attack executed by the existing users cooperating with the revoked users, and presents a user collusion avoidance ciphertext-policy ABE scheme with efficient attribute revocation for the cloud storage system.
233
Attribute-Based Encryption With Efficient Verifiable Outsourced Decryption
TL;DR: This paper formalizes a security model of ABE with verifiable outsourced decryption by introducing a verification key in the output of the encryption algorithm, and presents an approach to convert any ABE scheme with outsourcedDecryption into an ABE schemewith verifiable Outsourced ABE, which is simple, general, and almost optimal.
208
Data security and privacy preservation in cloud storage environments based on cryptographic mechanisms
TL;DR: This survey brings a critical comparative analysis of cryptographic defense mechanisms, and beyond this, it explores research directions and technology trends to address the protection of outsourced data in cloud infrastructures.
193
References
How to share a secret
TL;DR: This technique enables the construction of robust key management schemes for cryptographic systems that can function securely and reliably even when misfortunes destroy half the pieces and security breaches expose all but one of the remaining pieces.
Identity-Based Encryption from the Weil Pairing
Dan Boneh,Matthew K. Franklin +1 more
- 19 Aug 2001
TL;DR: This work proposes a fully functional identity-based encryption scheme (IBE) based on the Weil pairing that has chosen ciphertext security in the random oracle model assuming an elliptic curve variant of the computational Diffie-Hellman problem.
Identity-based cryptosystems and signature schemes
Adi Shamir
- 23 Aug 1985
TL;DR: In this article, the authors introduce a novel type of cryptographic scheme, which enables any pair of users to communicate securely and to verify each other's signatures without exchanging private or public keys, without keeping key directories, and without using the services of a third party.
Attribute-based encryption for fine-grained access control of encrypted data
Vipul Goyal,Omkant Pandey,Amit Sahai,Brent Waters +3 more
- 30 Oct 2006
TL;DR: This work develops a new cryptosystem for fine-grained sharing of encrypted data that is compatible with Hierarchical Identity-Based Encryption (HIBE), and demonstrates the applicability of the construction to sharing of audit-log information and broadcast encryption.
Ciphertext-Policy Attribute-Based Encryption
John Bethencourt,Amit Sahai,Brent Waters +2 more
- 20 May 2007
TL;DR: A system for realizing complex access control on encrypted data that is conceptually closer to traditional access control methods such as role-based access control (RBAC) and secure against collusion attacks is presented.
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