A randomized protocol for signing contracts
Communications of the ACM
Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Secure key issuing in ID-based cryptography
ACSW Frontiers '04 Proceedings of the second workshop on Australasian information security, Data Mining and Web Intelligence, and Software Internationalisation - Volume 32
Direct chosen ciphertext security from identity-based techniques
Proceedings of the 12th ACM conference on Computer and communications security
Attribute-based encryption for fine-grained access control of encrypted data
Proceedings of the 13th ACM conference on Computer and communications security
Advances in Cryptology - EUROCRYPT 2005: 24th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Aarhus, Denmark, ... (Lecture Notes in Computer Science)
Black-box accountable authority identity-based encryption
Proceedings of the 15th ACM conference on Computer and communications security
A forward-secure public-key encryption scheme
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Certificate-based encryption and the certificate revocation problem
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Reducing trust in the PKG in identity based cryptosystems
CRYPTO'07 Proceedings of the 27th annual international cryptology conference on Advances in cryptology
Blind identity-based encryption and simulatable oblivious transfer
ASIACRYPT'07 Proceedings of the Advances in Crypotology 13th international conference on Theory and application of cryptology and information security
Traceable and retrievable identity-based encryption
ACNS'08 Proceedings of the 6th international conference on Applied cryptography and network security
Efficient fully-simulatable oblivious transfer
CT-RSA'08 Proceedings of the 2008 The Cryptopgraphers' Track at the RSA conference on Topics in cryptology
Efficient Selective Identity-Based Encryption Without Random Oracles
Journal of Cryptology
Improved efficiency for CCA-secure cryptosystems built using identity-based encryption
CT-RSA'05 Proceedings of the 2005 international conference on Topics in Cryptology
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
Practical identity-based encryption without random oracles
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Black-box accountable authority identity-based encryption
Proceedings of the 15th ACM conference on Computer and communications security
Towards Black-Box Accountable Authority IBE with Short Ciphertexts and Private Keys
Irvine Proceedings of the 12th International Conference on Practice and Theory in Public Key Cryptography: PKC '09
Removing Escrow from Identity-Based Encryption
Irvine Proceedings of the 12th International Conference on Practice and Theory in Public Key Cryptography: PKC '09
Accountability: definition and relationship to verifiability
Proceedings of the 17th ACM conference on Computer and communications security
How to construct identity-based signatures without the key escrow problem
EuroPKI'09 Proceedings of the 6th European conference on Public key infrastructures, services and applications
Fully secure accountable-authority identity-based encryption
PKC'11 Proceedings of the 14th international conference on Practice and theory in public key cryptography conference on Public key cryptography
Fully CCA2 secure identity-based broadcast encryption with black-box accountable authority
Journal of Systems and Software
Efficient escrow-free identity-based signature
ProvSec'12 Proceedings of the 6th international conference on Provable Security
Accountable authority identity-based encryption with public traceability
CT-RSA'13 Proceedings of the 13th international conference on Topics in Cryptology
How to keep a secret: leakage deterring public-key cryptosystems
Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
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A well-known concern in the setting of identity based encryption is that the PKG is all powerful and has to be completely trusted. To mitigate this problem, the notion of Accountable Authority Identity-Based Encryption (A-IBE) was recently introduced by Goyal. Goyal provided constructions to realize the notion of A-IBE only in the white box and weak black box models. However, the security guarantees provided by these models fall short of those required in practice. In this paper, we resolve the main open question left in Goyal's work by providing a construction of a (fully) black box A-IBE system. Our construction is based on the Decisional Bilinear Diffie-Hellman assumption and uses techniques from key policy attribute based encryption.