| 摘要 |
PROBLEM TO BE SOLVED: To reduce dependency on communication in terms of single sign-on.SOLUTION: When it successfully authenticates the information transmitted from a client device, a first information processing device generates a hash value of prescribed information, generates encrypted data by encrypting the hash value using a first encryption key, and returns the encrypted data and the prescribed information to the client device. A second information processing device receives a request including the encrypted data and prescribed information transmitted from the client device, decrypts the encrypted data using a second encryption key same as the first encryption key or a second encryption key which forms a pair with the first encryption key, generates a hash value of the prescribed information, compares the decryption results with the generated hash value, and performs processing appropriate for the request on the basis of the comparison results. |
