Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
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Identity-Based Encryption from the Weil Pairing
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Hierarchical ID-Based Cryptography
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An Identity Based Encryption Scheme Based on Quadratic Residues
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On lattices, learning with errors, random linear codes, and cryptography
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Chosen-Ciphertext Security from Identity-Based Encryption
SIAM Journal on Computing
Generalized Identity Based and Broadcast Encryption Schemes
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Hierarchical Identity Based Encryption with Polynomially Many Levels
TCC '09 Proceedings of the 6th Theory of Cryptography Conference on Theory of Cryptography
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Verifiable Random Functions from Identity-Based Key Encapsulation
EUROCRYPT '09 Proceedings of the 28th Annual International Conference on Advances in Cryptology: the Theory and Applications of Cryptographic Techniques
Public-key cryptosystems from the worst-case shortest vector problem: extended abstract
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Lattice basis delegation in fixed dimension and shorter-ciphertext hierarchical IBE
CRYPTO'10 Proceedings of the 30th annual conference on Advances in cryptology
Overcoming the Hole in the Bucket: Public-Key Cryptography Resilient to Continual Memory Leakage
FOCS '10 Proceedings of the 2010 IEEE 51st Annual Symposium on Foundations of Computer Science
Cryptography against Continuous Memory Attacks
FOCS '10 Proceedings of the 2010 IEEE 51st Annual Symposium on Foundations of Computer Science
Identity-Based encryption gone wild
ICALP'06 Proceedings of the 33rd international conference on Automata, Languages and Programming - Volume Part II
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
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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
EUROCRYPT'10 Proceedings of the 29th Annual international conference on Theory and Applications of Cryptographic Techniques
Bonsai trees, or how to delegate a lattice basis
EUROCRYPT'10 Proceedings of the 29th Annual international conference on Theory and Applications of Cryptographic Techniques
Efficient lattice (H)IBE in the standard model
EUROCRYPT'10 Proceedings of the 29th Annual international conference on Theory and Applications of Cryptographic Techniques
Constructing verifiable random functions with large input spaces
EUROCRYPT'10 Proceedings of the 29th Annual international conference on Theory and Applications of Cryptographic Techniques
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In this paper, we propose an efficient, standard model, semigeneric transformation of selective-secure (Hierarchical) Identity-Based Encryption schemes into fully secure ones. The main step is a procedure that uses admissible hash functions (whose existence is implied by collision-resistant hash functions) to convert any selective-secure wildcarded identity-based encryption (WIBE) scheme into a fully secure (H)IBE scheme. Since building a selective-secureWIBE, especially with a selective-secure HIBE already in hand, is usually much less involved than directly building a fully secure HIBE, this transform already significantly simplifies the latter task. This black-box transformation easily extends to schemes secure in the Continual Memory Leakage (CML) model of Brakerski et al. (FOCS 2010), which allows us obtain a new fully secure IBE in that model. We furthermore show that if a selective-secure HIBE scheme satisfies a particular security notion, then it can be generically transformed into a selective-secure WIBE. We demonstrate that several current schemes already fit this new definition, while some others that do not obviously satisfy it can still be easily modified into a selective-secure WIBE.