Abstract
This paper presents a concrete democratic group signature scheme which holds (t, n)-threshold traceability. In the scheme, the capability of tracing the actual signer is distributed among n group members. It gives a valid democratic group signature such that any subset with more than t members can jointly reconstruct a secret and reveal the identity of the signer. Any active adversary cannot do this even if he can corrupt up to t − 1 group members.
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Foundation item: the National Natural Science Foundation of China (Nos. 60703031, 60703004, 60673076, 60672068)
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Li, Xx., Qian, Hf. & Li, Jh. Democratic group signatures with threshold traceability. J. Shanghai Jiaotong Univ. (Sci.) 14, 98–101 (2009). https://doi.org/10.1007/s12204-009-0098-z
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DOI: https://doi.org/10.1007/s12204-009-0098-z