Patent ID: 8180060

Claim:
A telemedical system comprising: a first adapter that is attachable to a measurement terminal that obtains biological data of a user of the measurement terminal by measuring the user and to a management apparatus that manages the measured biological data; a second adapter that is attachable to the measurement terminal; and a server which communicates with said first adapter, wherein said first adapter includes: a key holding unit configured to receive, from the server, a service key used for encrypting the biological data and to store the received service key, when said first adapter is attached to the measurement terminal; a first symmetric key generating unit configured to obtain unique information of the measurement terminal from the measurement terminal and to generate a symmetric key based on the obtained unique information, when said first adapter is attached to the measurement terminal after said first adapter is detached from the management apparatus while the service key is stored in said key holding unit; a key encryption unit configured to encrypt the service key using the symmetric key and to store the encrypted service key in said key holding unit, when said first adapter is attached to the management apparatus after said first adapter is detached from the measurement terminal; and a first communication unit configured to transmit the encrypted service key to said second adapter, when said first adapter is attached to the management apparatus and when said second adapter attached to the measurement terminal, and wherein said second adapter includes: a second symmetric key generating unit configured to obtain from the measurement terminal the unique information of the measurement terminal and to generate a symmetric key based on the obtained unique information, when said second adapter is attached to the measurement terminal; a key decryption unit configured to decrypt the encrypted service key using the symmetric key generated in said second symmetric key generating unit, when said second adapter receives the encrypted service key from said first adapter; and a second communication unit configured to encrypt, using the decrypted service key, the biological data of the user measured by the measurement terminal and to transmit the encrypted biological data to said server via said first adapter.