List of Platform Operators and List of Case Studies
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On this page, we introduce platform operators * (24 companies, as of September 26, 2025) that have currently introduced Japanese Public Key Infrastructure and examples of their introduction. We provide reference information on how it has been introduced to what industries and services, and what benefits it has for private sector and customers. We hope you will consider introducing it.
*For an explanation of the platform operator, please refer to Japanese Public Key Infrastructure (JPKI) "6.1 Service Introduction Method" .
1. Business Operators and Case Studies
Click on a Business Name in the list to view the case studies.
- Organization for Promotion of Common Platform for ICT Town Development (PDF / 2,266 kb)
- NTT DATA CORPORATION (PDF / 1,494 kb)
- GMO GlobalSign Inc. (PDF / 762 kb)
- NEC Corporation (PDF / 972 kb)
- Cyberlinks, Inc.
- Japan Medical Association
- Hitachi, Ltd. (PDF / 971 kb)
- Cybertrust Co., Ltd. (PDF / 2,954 kb)
- Toppan Edge Co., Ltd.
- Nomura Research Institute, Ltd.
- Workthy Co., Ltd. (formerly Shift Seven Consulting Co., Ltd.) (PDF / 453B)
- TIS Inc.
- Double Standard Co., Ltd. (PDF / 418 kb)
- Flight Solutions Co., Ltd. (PDF / 1,116 kb)
- Pocket Sign Co., Ltd. (PDF / 2,709 kb)
- Bengoshi. com Co., Ltd. (PDF / 571 kb)
- Milabo Co., Ltd. (PDF/331KB) (updated March 12, 2025)
- NTT DOCOMO Business, Inc. (formerly NTT Communications Corporation (PDF / 375 kb)
- ACSiON Corporation (PDF / 372 kb)
- MASO Corporation (PDF/167KB)
- Cloudship Co., Ltd. (PDF / 2,687 kb)
- Skycom Co., Ltd. (PDF / 106 kb)
- Tixplus Inc. (PDF / 1,258 kb)
- TRUSTDOCK, Inc. (PDF / 583 kb)