In order to provide anonymous authentication for ad hoc network. democratic group signatures with centerless secret sharing scheme and proposed a threshold traceability anonymous authentication scheme without trusted center for ad hoc network were combined. The scheme was centerless and self-organized. which was well suited to the characters of ad hoc network and had solved the proble... https://pypfwxkfesxyh2.nizarblog.com/35079933/new-technology-for-large-preparation-of-a-series-of-bioactive-polyphenols-from-by-products-of-vinification