There is provided an information processing apparatus comprising a process execution unit, a designated information obtaining unit to obtain designated information relating to authority for use, a certificate generating unit to generate a digital certificate which has a range of authority for use and is attached with a digital signature, a certificate outputting unit to output the generated digital certificate, a certificate obtaining unit to obtain a digital certificate from a predetermined resource device, a validity judgment unit to judge whether the digital certificate is valid based on the digital signature attached to the digital certificate, and an authorization unit to authorize the process execution unit to execute valid process for a predetermined period.