A public key cryptosystem and a signature scheme based on discrete logarithms
Proceedings of CRYPTO 84 on Advances in cryptology
Secure Integration of Asymmetric and Symmetric Encryption Schemes
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Attribute-based encryption for fine-grained access control of encrypted data
Proceedings of the 13th ACM conference on Computer and communications security
Secure attribute-based systems
Proceedings of the 13th ACM conference on Computer and communications security
SP '07 Proceedings of the 2007 IEEE Symposium on Security and Privacy
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
Bounded Ciphertext Policy Attribute Based Encryption
ICALP '08 Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part II
Fully homomorphic encryption using ideal lattices
Proceedings of the forty-first annual ACM symposium on Theory of computing
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
ICCSA'03 Proceedings of the 2003 international conference on Computational science and its applications: PartI
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
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
TrustVisor: Efficient TCB Reduction and Attestation
SP '10 Proceedings of the 2010 IEEE Symposium on Security and Privacy
Fully secure functional encryption with general relations from the decisional linear assumption
CRYPTO'10 Proceedings of the 30th annual conference on Advances in cryptology
Non-interactive verifiable computing: outsourcing computation to untrusted workers
CRYPTO'10 Proceedings of the 30th annual conference on Advances in cryptology
Improved delegation of computation using fully homomorphic encryption
CRYPTO'10 Proceedings of the 30th annual conference on Advances in cryptology
PKC'11 Proceedings of the 14th international conference on Practice and theory in public key cryptography conference on Public key cryptography
Achieving leakage resilience through dual system encryption
TCC'11 Proceedings of the 8th conference on Theory of cryptography
Functional encryption: definitions and challenges
TCC'11 Proceedings of the 8th conference on Theory of cryptography
Implementing Gentry's fully-homomorphic encryption scheme
EUROCRYPT'11 Proceedings of the 30th Annual international conference on Theory and applications of cryptographic techniques: advances in cryptology
Efficient Selective Identity-Based Encryption Without Random Oracles
Journal of Cryptology
Searchable encryption revisited: consistency properties, relation to anonymous IBE, and extensions
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Fuzzy identity-based encryption
EUROCRYPT'05 Proceedings of the 24th 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
Secure delegation of elliptic-curve pairing
CARDIS'10 Proceedings of the 9th IFIP WG 8.8/11.2 international conference on Smart Card Research and Advanced Application
Securing electronic medical records using attribute-based encryption on mobile devices
Proceedings of the 1st ACM workshop on Security and privacy in smartphones and mobile devices
How to delegate and verify in public: verifiable computation from attribute-based encryption
TCC'12 Proceedings of the 9th international conference on Theory of Cryptography
Oblivious transfer with hidden access control from attribute-based encryption
SCN'12 Proceedings of the 8th international conference on Security and Cryptography for Networks
Outsourcing encryption of attribute-based encryption with mapreduce
ICICS'12 Proceedings of the 14th international conference on Information and Communications Security
Efficient keyword search over encrypted data with fine-grained access control in hybrid cloud
NSS'12 Proceedings of the 6th international conference on Network and System Security
Secure access to outsourced data
Proceedings of the 2013 international workshop on Security in cloud computing
CloudHKA: a cryptographic approach for hierarchical access control in cloud computing
ACNS'13 Proceedings of the 11th international conference on Applied Cryptography and Network Security
Secure outsourced garbled circuit evaluation for mobile devices
SEC'13 Proceedings of the 22nd USENIX conference on Security
Proceedings of the First International Workshop on Middleware for Cloud-enabled Sensing
Streamforce: outsourcing access control enforcement for stream data to the clouds
Proceedings of the 4th ACM conference on Data and application security and privacy
Privacy-preserving data utilization in hybrid clouds
Future Generation Computer Systems
Outsourcing computation of modular exponentiations in cloud computing
Cluster Computing
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Attribute-based encryption (ABE) is a new vision for public key encryption that allows users to encrypt and decrypt messages based on user attributes. For example, a user can create a ciphertext that can be decrypted only by other users with attributes satisfying ("Faculty" OR ("PhD Student" AND "Quals Completed")). Given its expressiveness, ABE is currently being considered for many cloud storage and computing applications. However, one of the main efficiency drawbacks of ABE is that the size of the ciphertext and the time required to decrypt it grows with the complexity of the access formula. In this work, we propose a new paradigm for ABE that largely eliminates this overhead for users. Suppose that ABE ciphertexts are stored in the cloud. We show how a user can provide the cloud with a single transformation key that allows the cloud to translate any ABE ciphertext satisfied by that user's attributes into a (constant-size) El Gamal-style ciphertext, without the cloud being able to read any part of the user's messages. To precisely define and demonstrate the advantages of this approach, we provide new security definitions for both CPA and replayable CCA security with outsourcing, several new constructions, an implementation of our algorithms and detailed performance measurements. In a typical configuration, the user saves significantly on both bandwidth and decryption time, without increasing the number of transmissions.