A digital signature scheme secure against adaptive chosen-message attacks
SIAM Journal on Computing - Special issue on cryptography
Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
Perfectly secure key distribution for dynamic conferences
Information and Computation
CT-RSA '02 Proceedings of the The Cryptographer's Track at the RSA Conference on Topics in Cryptology
CT-RSA '02 Proceedings of the The Cryptographer's Track at the RSA Conference on Topics in Cryptology
ICISC '01 Proceedings of the 4th International Conference Seoul on Information Security and Cryptology
Incremental Cryptography: The Case of Hashing and Signing
CRYPTO '94 Proceedings of the 14th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Chameleon hash without key exposure based on Schnorr signature
Computer Standards & Interfaces
Strongly-Resilient and Non-interactive Hierarchical Key-Agreement in MANETs
ESORICS '08 Proceedings of the 13th European Symposium on Research in Computer Security: Computer Security
Invisibly Sanitizable Digital Signature Scheme
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Security of Sanitizable Signatures Revisited
Irvine Proceedings of the 12th International Conference on Practice and Theory in Public Key Cryptography: PKC '09
Chameleon hashes without key exposure based on factoring
Journal of Computer Science and Technology
ICWS '09 Proceedings of the 2009 IEEE International Conference on Web Services
Trapdoor sanitizable signatures and their application to content protection
ACNS'08 Proceedings of the 6th international conference on Applied cryptography and network security
Trapdoor sanitizable signatures made easy
ACNS'10 Proceedings of the 8th international conference on Applied cryptography and network security
Identity-based chameleon hash scheme without key exposure
ACISP'10 Proceedings of the 15th Australasian conference on Information security and privacy
On the key exposure problem in chameleon hashes
SCN'04 Proceedings of the 4th international conference on Security in Communication Networks
ESORICS'05 Proceedings of the 10th European conference on Research in Computer Security
PIATS: a partially sanitizable signature scheme
ICICS'05 Proceedings of the 7th international conference on Information and Communications Security
Extended sanitizable signatures
ICISC'06 Proceedings of the 9th international conference on Information Security and Cryptology
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At ACNS 2008, Canard et al. introduced the notion of trapdoor sanitizable signature (TSS) based on identity-based chameleon hash (IBCH). Trapdoor sanitizable signatures allow the signer of a message to delegate, at any time, the power of sanitization to possibly several entities who can modify predetermined parts of the message and generate a new signature on the sanitized message without interacting with the original signer. In this paper, we introduce the notion of hierarchical identity-based chameleon hash (HIBCH), which is a hierarchical extension of IBCH. We show that HIBCH can be used to construct other cryptographic primitives, including hierarchical trapdoor sanitizable signature (HTSS) and key-exposure free IBCH. HTSS allows an entity who has the sanitization power for a given signed message, to further delegate its power to its descendants in a controlled manner. Finally, we propose a concrete construction of HIBCH and show that it is t-threshold collusionresistant.