| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a relay service apparatus and service providing device in which even if particular data such as a private key, that a data protection committee has, are leaked, account numbers like category numbers that all users have for each of services, are not known. <P>SOLUTION: The relay service apparatus includes: a means for acquiring, when an encrypted sentence of an account number in an apparatus and an identifier of another service institute are sent to the apparatus, the account number in the apparatus by decrypting the encrypted sentence, and redirecting an encrypted sentence of an account number in the other service institute; and a means for confirming that all encrypted sentences using a public key of each of service institutes corresponding to an account number of a user for each service institute correspond to the account number for the same user, and then storing the encrypted sentence on a table corresponding to the account number. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
