| 摘要 |
PURPOSE:To obtain the digital signing device for inspecting simultaneously in the lump the validity of plural signature data at a high speed. CONSTITUTION:The device is constituted of a signature inspecting part 200 provided with an input means 210 for inputting each open key data corresponding to one-to-one to plural message data, each signature data to each message data of these plural message data, and each secret key data used for generating each signature data, a signature inspecting means 220 for inspecting in the lump the validity of each input signature data in accordance wit a batch signature inspecting expression determined by a signature inspecting expression corresponding to one-to-one to each signature generating expression used for generating each input signature data by using each input message data, each input signature data, and each input open key data, and plural random variables, and determined so as to be an identical equation to each random variable thereof, and an output means 230 for outputting a result of inspection. In this regard, a signature generating part 100 is provided with the same means as a conventional digital signature device. |
