Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
Provably secure key-updating schemes in identity-based systems
EUROCRYPT '90 Proceedings of the workshop on the theory and application of cryptographic techniques on Advances in cryptology
Identity-Based Encryption from the Weil Pairing
SIAM Journal on Computing
Identity-Based Encryption from the Weil Pairing
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference 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
Key-Insulated Public Key Cryptosystems
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications 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
How to Enhance the Security of Public-Key Encryption at Minimum Cost
PKC '99 Proceedings of the Second International Workshop on Practice and Theory in Public Key Cryptography
A Concrete Security Treatment of Symmetric Encryption
FOCS '97 Proceedings of the 38th Annual Symposium on Foundations of Computer Science
Exposure-Resilience for Free: The Hierarchical ID-based Encryption Case
SISW '02 Proceedings of the First International IEEE Security in Storage Workshop
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
Intrusion-resilient public-key encryption
CT-RSA'03 Proceedings of the 2003 RSA conference on The cryptographers' track
Chosen-ciphertext security of multiple encryption
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
Identity-Based Key-Insulated Signature Without Random Oracles
Computational Intelligence and Security
Identity-based encryption with efficient revocation
Proceedings of the 15th ACM conference on Computer and communications security
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Key Insulation and Intrusion Resilience over a Public Channel
CT-RSA '09 Proceedings of the The Cryptographers' Track at the RSA Conference 2009 on Topics in Cryptology
Protecting against key escrow and key exposure in identity-based cryptosystem
TAMC'07 Proceedings of the 4th international conference on Theory and applications of models of computation
Generic constructions of parallel key-insulated encryption
SCN'10 Proceedings of the 7th international conference on Security and cryptography for networks
Cryptanalysis of an (hierarchical) identity based parallel key-insulated encryption scheme
Journal of Systems and Software
New identity-based key-insulated convertible multi-authenticated encryption scheme
Journal of Network and Computer Applications
Identity-based key-insulated signature with secure key-updates
Inscrypt'06 Proceedings of the Second SKLOIS conference on Information Security and Cryptology
Reducing the spread of damage of key exposures in key-insulated encryption
VIETCRYPT'06 Proceedings of the First international conference on Cryptology in Vietnam
INDOCRYPT'06 Proceedings of the 7th international conference on Cryptology in India
A strong identity based key-insulated cryptosystem
EUC'06 Proceedings of the 2006 international conference on Emerging Directions in Embedded and Ubiquitous Computing
Leakage resilient strong key-insulated signatures in public channel
INTRUST'10 Proceedings of the Second international conference on Trusted Systems
Towards attribute revocation in key-policy attribute based encryption
CANS'11 Proceedings of the 10th international conference on Cryptology and Network Security
Efficient delegation of key generation and revocation functionalities in identity-based encryption
CT-RSA'13 Proceedings of the 13th international conference on Topics in Cryptology
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In this paper, we discuss non-interactive updating of decryption keys in identity-based encryption (IBE). In practice, key revocation is a necessary and inevitable process and IBE is no exception when it comes to having to manage revocation of decryption keys without losing its merits in efficiency. Our main contribution of this paper is to propose novel constructions of IBE where a decryption key can be renewed without having to make changes to its public key, i.e. user’s identity. We achieve this by extending the hierarchical IBE (HIBE). Regarding security, we address semantic security against adaptive chosen ciphertext attacks for a very strong attack environment that models all possible types of key exposures in the random oracle model. In addition to this, we show method of constructing a partially collusion resistant HIBE from arbitrary IBE in the random oracle model. By combining both results, we can construct an IBE with non-interactive key update from only an arbitrary IBE.