Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Identity-Based Encryption from the Weil Pairing
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
An Efficient System for Non-transferable Anonymous Credentials with Optional Anonymity Revocation
EUROCRYPT '01 Proceedings of the International Conference on the Theory and Application of Cryptographic Techniques: Advances in Cryptology
Toward Hierarchical Identity-Based Encryption
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
Hierarchical ID-Based Cryptography
ASIACRYPT '02 Proceedings of the 8th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
An Identity Based Encryption Scheme Based on Quadratic Residues
Proceedings of the 8th IMA International Conference on Cryptography and Coding
Concealing complex policies with hidden credentials
Proceedings of the 11th ACM conference on Computer and communications security
Policy-based encryption schemes from bilinear pairings
ASIACCS '06 Proceedings of the 2006 ACM Symposium on Information, computer and communications security
Escrow-free encryption supporting cryptographic workflow
International Journal of Information Security
Attribute-based encryption for fine-grained access control of encrypted data
Proceedings of the 13th ACM conference on Computer and communications security
Ciphertext-Policy Attribute-Based Encryption
SP '07 Proceedings of the 2007 IEEE Symposium on Security and Privacy
Multi-Dimensional Range Query over Encrypted Data
SP '07 Proceedings of the 2007 IEEE Symposium on Security and Privacy
Attribute-based encryption with non-monotonic access structures
Proceedings of the 14th ACM conference on Computer and communications security
Provably secure ciphertext policy ABE
Proceedings of the 14th ACM conference on Computer and communications security
Controlling access to published data using cryptography
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Space-Efficient Identity Based EncryptionWithout Pairings
FOCS '07 Proceedings of the 48th Annual IEEE Symposium on Foundations of Computer Science
Delegating Capabilities in Predicate Encryption Systems
ICALP '08 Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part II
Bounded Ciphertext Policy Attribute Based Encryption
ICALP '08 Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part II
Hidden-Vector Encryption with Groups of Prime Order
Pairing '08 Proceedings of the 2nd international conference on Pairing-Based Cryptography
Secure Threshold Multi Authority Attribute Based Encryption without a Central Authority
INDOCRYPT '08 Proceedings of the 9th International Conference on Cryptology in India: Progress in Cryptology
Distributed Attribute-Based Encryption
Information Security and Cryptology --- ICISC 2008
Dual System Encryption: Realizing Fully Secure IBE and HIBE under Simple Assumptions
CRYPTO '09 Proceedings of the 29th Annual International Cryptology Conference on Advances in Cryptology
Improving privacy and security in multi-authority attribute-based encryption
Proceedings of the 16th ACM conference on Computer and communications security
Lower bounds for discrete logarithms and related problems
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Multi-authority attribute based encryption
TCC'07 Proceedings of the 4th conference on Theory of cryptography
Conjunctive, subset, and range queries on encrypted data
TCC'07 Proceedings of the 4th conference on Theory of cryptography
A forward-secure public-key encryption scheme
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Access control using pairing based cryptography
CT-RSA'03 Proceedings of the 2003 RSA conference on The cryptographers' track
Predicate encryption supporting disjunctions, polynomial equations, and inner products
EUROCRYPT'08 Proceedings of the theory and applications of cryptographic techniques 27th annual international conference on Advances in cryptology
Efficient non-interactive proof systems for bilinear groups
EUROCRYPT'08 Proceedings of the theory and applications of cryptographic techniques 27th annual international conference on Advances in cryptology
Building efficient fully collusion-resilient traitor tracing and revocation schemes
Proceedings of the 17th ACM conference on Computer and communications security
PKC'11 Proceedings of the 14th international conference on Practice and theory in public key cryptography conference on Public key cryptography
Identity-based encryption secure against selective opening attack
TCC'11 Proceedings of the 8th conference on Theory of cryptography
Secure cryptographic workflow in the standard model
INDOCRYPT'06 Proceedings of the 7th international conference on Cryptology in India
New techniques for dual system encryption and fully secure HIBE with short ciphertexts
TCC'10 Proceedings of the 7th international conference on Theory of Cryptography
Evaluating 2-DNF formulas on ciphertexts
TCC'05 Proceedings of the Second international conference on Theory of Cryptography
Efficient identity-based encryption without random oracles
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Hierarchical identity based encryption with constant size ciphertext
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Fuzzy identity-based encryption
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Converting pairing-based cryptosystems from composite-order groups to prime-order groups
EUROCRYPT'10 Proceedings of the 29th Annual international conference on Theory and Applications of Cryptographic Techniques
EUROCRYPT'10 Proceedings of the 29th Annual international conference on Theory and Applications of Cryptographic Techniques
Non-interactive zaps and new techniques for NIZK
CRYPTO'06 Proceedings of the 26th annual international conference on Advances in Cryptology
Perfect non-interactive zero knowledge for NP
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Practical identity-based encryption without random oracles
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Fully collusion resistant traitor tracing with short ciphertexts and private keys
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Generalized key delegation for hierarchical identity-based encryption
ESORICS'07 Proceedings of the 12th European conference on Research in Computer Security
Improved access control mechanism in vehicular ad hoc networks
ADHOC-NOW'11 Proceedings of the 10th international conference on Ad-hoc, mobile, and wireless networks
Fully secure multi-authority ciphertext-policy attribute-based encryption without random oracles
ESORICS'11 Proceedings of the 16th European conference on Research in computer security
ProvSec'11 Proceedings of the 5th international conference on Provable security
Tools for simulating features of composite order bilinear groups in the prime order setting
EUROCRYPT'12 Proceedings of the 31st Annual international conference on Theory and Applications of Cryptographic Techniques
Privacy Preserving Access Control with Authentication for Securing Data in Clouds
CCGRID '12 Proceedings of the 2012 12th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (ccgrid 2012)
Threshold ciphertext policy attribute-based encryption with constant size ciphertexts
ACISP'12 Proceedings of the 17th Australasian conference on Information Security and Privacy
Functional encryption: a new vision for public-key cryptography
Communications of the ACM
A general construction for multi-authority attribute-based encryption
AICI'12 Proceedings of the 4th international conference on Artificial Intelligence and Computational Intelligence
A ciphertext policy attribute-based encryption scheme without pairings
Inscrypt'11 Proceedings of the 7th international conference on Information Security and Cryptology
Flexible attribute-based encryption
ICICS'12 Proceedings of the 14th international conference on Information and Communications Security
A general transformation from KP-ABE to searchable encryption
CSS'12 Proceedings of the 4th international conference on Cyberspace Safety and Security
Dual form signatures: an approach for proving security from static assumptions
ASIACRYPT'12 Proceedings of the 18th international conference on The Theory and Application of Cryptology and Information Security
Fully secure unbounded inner-product and attribute-based encryption
ASIACRYPT'12 Proceedings of the 18th international conference on The Theory and Application of Cryptology and Information Security
Fully secure hidden vector encryption under standard assumptions
Information Sciences: an International Journal
Expressive search on encrypted data
Proceedings of the 8th ACM SIGSAC symposium on Information, computer and communications security
How to use attribute-based encryption to implement role-based access control in the cloud
Proceedings of the 2013 international workshop on Security in cloud computing
International Journal of Security and Networks
Practical constructions and new proof methods for large universe attribute-based encryption
Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
A general transformation from KP-ABE to searchable encryption
Future Generation Computer Systems
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We propose a Multi-Authority Attribute-Based Encryption (ABE) system. In our system, any party can become an authority and there is no requirement for any global coordination other than the creation of an initial set of common reference parameters. A party can simply act as an ABE authority by creating a public key and issuing private keys to different users that reflect their attributes. A user can encrypt data in terms of any boolean formula over attributes issued from any chosen set of authorities. Finally, our system does not require any central authority. In constructing our system, our largest technical hurdle is to make it collusion resistant. Prior Attribute-Based Encryption systems achieved collusion resistance when the ABE system authority "tied" together different components (representing different attributes) of a user's private key by randomizing the key. However, in our system each component will come from a potentially different authority, where we assume no coordination between such authorities. We create new techniques to tie key components together and prevent collusion attacks between users with different global identifiers. We prove our system secure using the recent dual system encryption methodology where the security proof works by first converting the challenge ciphertext and private keys to a semi-functional form and then arguing security. We follow a recent variant of the dual system proof technique due to Lewko and Waters and build our system using bilinear groups of composite order. We prove security under similar static assumptions to the LW paper in the random oracle model.