Secure data management apparatus

A secure data management apparatus capable of improving reliability and certainty of synchronization processing with the server, security of data, and reliability of time, and performing data management with high reliability and high security. In the apparatus, a data management card application (301) on an IC card (102) issues MTA (Master Trusted Agent) (200) that is a terminal application operating on the terminal (101) to the terminal (101). The MTA (200) embeds authentication information in the code of the data management application (201) that is a terminal application for executing data synchronization processing with a server (103) to start up the data management application (201). Based on the authentication information, the data management card application (301) authenticates the data management application (201), and the data management application (201) stores target data of the synchronization processing in the IC card (102). Based on the target data stored in the IC card (102), the data management application (201) performs the synchronization processing with the server (103).