With the aim of establishing PKI security infrastructure, our research group is engaged in research and development to provide solutions to various technical problems; that is to say, we are not only continuing research on basic technologies for public key cryptosystems but also implementing PKI to support mobile terminals with strictly limited resources (such as mobile phones). For example, one achievement of our research efforts is a Certificate Validation Server (CVS) that we have developed for Validation Authorities (VAs).
Furthermore, since becoming as a participant in the "Mobile IT Forum" (mITF) under the Ministry of Public Management, Home Affairs, Posts and Telecommunications in June 2001 and without regard to a narrow framework concerning Hitachi Ltd, we taken the stance of actively contributing to the establishment of the security infrastructure for the mobile generation.
In addition, our research group has been participating in the technical studies performed under the International Telecommunications Union, Telecommunication Standardization Sector (ITU-T).
Established by the United Nations and headquartered in Geneva, Switzerland, the International Telecommunications Union (ITU) is a specialized organization--made up from members from over 150 nations--for performing standardization for telecommunications technologies, services, and protocols. The ITU is composed of four main sections, one of which, the ITU-T (ITU-Telecommunication Standardization Sector), handles standardization for communcation-related technologies.
At the ITU-T, one two-week technical discussion takes place every half year, and new technical standardization is implemented one time every four years. In other words, for the "study period" from 2001 to 2004, "mobile security" was taken up as one investigation theme, and in March this year (2004), standardization schemes for the principle security technologies were determined by vote and introduced as official standards in May.
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