Universal one-way hash functions and their cryptographic applications
STOC '89 Proceedings of the twenty-first annual ACM symposium on Theory of computing
STOC '91 Proceedings of the twenty-third annual ACM symposium on Theory of computing
Society and Group Oriented Cryptography: A New Concept
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
Non-Interactive Zero-Knowledge Proof of Knowledge and Chosen Ciphertext Attack
CRYPTO '91 Proceedings of the 11th Annual International Cryptology Conference on Advances in Cryptology
Efficient Group Signature Schemes for Large Groups (Extended Abstract)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
A Practical Public Key Cryptosystem Provably Secure Against Adaptive Chosen Ciphertext Attack
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
Foundations of Cryptography: Volume 1
Foundations of Cryptography: Volume 1
Secure scalable group signature with dynamic joins and separable authorities
International Journal of Security and Networks
Publicly verifiable secret sharing
EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
Efficient and generalized group signatures
EUROCRYPT'97 Proceedings of the 16th annual international conference on Theory and application of cryptographic techniques
Public-key cryptosystems based on composite degree residuosity classes
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
Efficient concurrent zero-knowledge in the auxiliary string model
EUROCRYPT'00 Proceedings of the 19th international conference on Theory and application of cryptographic techniques
A framework for password-based authenticated key exchange
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Extracting group signatures from traitor tracing schemes
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
A signature scheme with efficient protocols
SCN'02 Proceedings of the 3rd international conference on Security in communication networks
Simulation-sound NIZK proofs for a practical language and constant size group signatures
ASIACRYPT'06 Proceedings of the 12th international conference on Theory and Application of Cryptology and Information Security
ICALP'05 Proceedings of the 32nd international conference on Automata, Languages and Programming
Foundations of group signatures: the case of dynamic groups
CT-RSA'05 Proceedings of the 2005 international conference on Topics in Cryptology
Custodian-hiding verifiable encryption
WISA'04 Proceedings of the 5th international conference on Information Security Applications
Group signatures with efficient concurrent join
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Compact group signatures without random oracles
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Universal custodian-hiding verifiable encryption for discrete logarithms
ICISC'05 Proceedings of the 8th international conference on Information Security and Cryptology
Information Security Applications
Publicly Verifiable Privacy-Preserving Group Decryption
Information Security and Cryptology
Hardware-Assisted Application-Level Access Control
ISC '09 Proceedings of the 12th International Conference on Information Security
A simple construction for public-key encryption with revocable anonymity: the honest-sender case
Proceedings of the nineth ACM workshop on Digital rights management
Group Encryption: Non-interactive Realization in the Standard Model
ASIACRYPT '09 Proceedings of the 15th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Mediated traceable anonymous encryption
LATINCRYPT'10 Proceedings of the First international conference on Progress in cryptology: cryptology and information security in Latin America
Efficient circuit-size independent public key encryption with KDM security
EUROCRYPT'11 Proceedings of the 30th Annual international conference on Theory and applications of cryptographic techniques: advances in cryptology
Additively homomorphic encryption with a double decryption mechanism, revisited
ISC'12 Proceedings of the 15th international conference on Information Security
Toward practical group encryption
ACNS'13 Proceedings of the 11th international conference on Applied Cryptography and Network Security
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We present group encryption, a new cryptographic primitive which is the encryption analogue of a group signature. It possesses similar verifiability, security and privacy properties, but whereas a group signature is useful whenever we need to conceal the source (signer) within a group of legitimate users, a group encryption is useful whenever we need to conceal a recipient (decryptor) within a group of legitimate receivers. We introduce and model the new primitive and present sufficient as well as necessary conditions for its generic implementation. We then develop an efficient novel number theoretic construction for group encryption of discrete logarithms whose complexity is independent of the group size. As part of achieving this we construct a new public-key encryption for discrete logarithms that satisfies CCA2-key-privacy and CCA2- security in the standard model (this gives the first Pailler-based system with the above two properties proven in the standard model). Applications of group encryption include settings where a user wishes to hide her preferred trusted third party or even impose a hidden hierarchy of trusted parties while being required to assure well-formed ciphertexts, as well as oblivious storage settings where the set of retrievers need to be verifiable but the storage distribution should be oblivious to the server.