| 摘要 |
<p>A need exists for a technology for guaranteeing the authenticity of an electronic document, and an information disclosure system, which can guarantee the authenticity of a disclosed document and delete information regarded as inappropriate for disclosure. An electronic document (106) is divided into components, and a random number generated from a seed value (R, S) is concatenated to each of the components. A hash value (X_i, Y_i) is calculated for each of the components with which the random numbers have been concatenated. The calculated hash values are further concatenated using a hash function to generate data (X, Y) to which an digital signature (SIG) is applied.</p> |
