LIU Meng-jun, LIU Shu-bo, WANG Ying, et al. Optimizing the Decryption Efficiency in LSSS Matrix-Based Attribute-Based Encryption Without Given Policy[J]. Acta Electronica Sinica, 2015, 43(6): 1065-1072.
LIU Meng-jun, LIU Shu-bo, WANG Ying, et al. Optimizing the Decryption Efficiency in LSSS Matrix-Based Attribute-Based Encryption Without Given Policy[J]. Acta Electronica Sinica, 2015, 43(6): 1065-1072. DOI: 10.3969/j.issn.0372-2112.2015.06.004.
The redundant participants need to be excluded from the authorized set to achieve a high decryption efficiency in LSSS(Linear Secret-Sharing Schemes) matrix-based attribute-based encryption algorithms.The existing solutions achieve this by searching the minimum participant set in the previously given access policy.Some security threats
however
may be brought in under the previously given policy.And the absence of the access policy disables the existing searching-sound solutions.Thus
an optimizing solution is proposed.Intensive theory analysis and simulation show the proposed solution can get the minimum participant set