METHOD FOR PROVIDING SAFETY OF WEB SERVICE IN UBIQUITOUS CIRCUMSTANCE

摘要

A method for providing a safe web service in a ubiquitous environment is provided to improve the flexibility with other systems based on SAMIL by defining a DAT(Delegation Authorization) based on SAMIL 2.0. A method for providing a safe web service in a ubiquitous environment includes the steps of: encrypting the information with respect to a subject by using a public key of an AA(Authentication Agent) to prevent the privacy of the subject from being exposed; and encrypting input data(Encrypted Attribute) into a public key of a provider of the corresponding web service. The web service provider inspects only the validity of the DAT received from the agent so as to reduce the time complexity for the verification.