@techreport{oai:ipsj.ixsq.nii.ac.jp:00107256, author = {神宮, 武志 and 古田, 英之 and 岩村, 惠市 and Takeshi, Shingu and Hideyuki, Furuta and Keiichi, Iwamura}, issue = {5}, month = {Nov}, note = {本稿では,秘密分散法の分散情報の更新手法について考える.著者らは [4] において,新しい分散情報の更新法を提案したが,従来,この問題に対してはプロアクティブ秘密分散法が提案されている.そこで,本稿では [4] の手法とプロアクティブ秘密分散法との比較を行い,[4] の手法にプロアクティブ秘密分散法と同等の機能を持たせるように拡張を行う.そのために,[4] の手法に検証鍵を追加し,更新情報の検証を可能にした.また通信量,計算量の比較を行った., We consider the update method of the distributed information of the secret sharing scheme. The authors have proposed a new method for updating distributed information in CSEC in May, but conventional proactive secret sharing scheme has been proposed for this problem. Therefore, the comparison is made with the proactive secret sharing scheme in this paper, we extend so as to have the same functions as the proactive secret sharing scheme. Add the verification key to the same functions as the proposed method of last, a comparison is made communication amount, the amount of calculation. In additions you have made changes to the security proof change is needed along with the additional.}, title = {秘密分散法における検証可能な分散情報の更新手法}, year = {2014} }