A multi-secret sharing scheme in an access structure

摘要

A multi-secret sharing scheme can share a group of secrets in each sharing session; this scheme is deemed to be very useful in sharing important secrets. However, previously, few scheme on sharing points on an elliptic curve has been devised. D.Liu et al presented a scheme on sharing points on an elliptic curve. But that are some drawbacks in this scheme. A new scheme will be present. An access structure will be introduced. The security of the proposed scheme is based on ECDLP . The secret shadows are selected by participants, so a secret channel not needed between secret dealer and participants. The scheme is a multi-time-use scheme, not a one-time-use scheme.