| 摘要 |
<p>A data element generating device encrypts various vectors comprising a plurality of data to generate vectors consisting of ciphertext and output the vectors as data elements. A database generating system comprises a plurality of first distribution devices, and outputs a string of all data elements as the aforementioned database. A database presentation system comprises a plurality of second distribution devices, generates a multiplicity of data strings referenced by the database based on reference items wherein items to be referenced have been designated, sequentially sorts various elements in the data strings by means of all of the second distribution devices, so that reordering of the sequence of the elements in a data string is the same for all the data strings.</p> |
