A digital signature scheme secure against adaptive chosen-message attacks
SIAM Journal on Computing - Special issue on cryptography
ICISC '01 Proceedings of the 4th International Conference Seoul on Information Security and Cryptology
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
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PIATS: a partially sanitizable signature scheme
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ICISC'06 Proceedings of the 9th international conference on Information Security and Cryptology
Security of Sanitizable Signatures Revisited
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Trapdoor sanitizable signatures made easy
ACNS'10 Proceedings of the 8th international conference on Applied cryptography and network security
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ACNS'11 Proceedings of the 9th international conference on Applied cryptography and network security
Fully-secure and practical sanitizable signatures
Inscrypt'10 Proceedings of the 6th international conference on Information security and cryptology
Unlinkability of sanitizable signatures
PKC'10 Proceedings of the 13th international conference on Practice and Theory in Public Key Cryptography
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Sanitizable signatures with several signers and sanitizers
AFRICACRYPT'12 Proceedings of the 5th international conference on Cryptology in Africa
Protecting privacy by sanitizing personal data: a new approach to anonymous credentials
Proceedings of the 8th ACM SIGSAC symposium on Information, computer and communications security
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Sanitizable signatures allow a designated entity to modify some specific parts of a signed message and to produce a new signature of the resulting message without any interaction with the original signer. In this paper, we extend these sanitizable signatures to formally introduce trapdoor sanitizable signatures. In this concept, the power of sanitization is given to possibly several entities, for a given message/signature by using a trapdoor computed by the signer at any time. We also give a generic construction of such trapdoor sanitizable signatures. Eventually, we apply our new cryptographic tool to group content protection, permitting members of the group to distribute a protected content among themselves.