COMMUNICATION DEVICE AND DISTRIBUTED LEDGER SYSTEM

• Main Authors: KOSEKI, Yoshihiro, KAWAI, Yutaka
• Format: Patent
• Language: English; French; Japanese
• Published: 14.06.2018
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

In a distributed ledger system (1), a pair of a public key and a master secret key is generated for each group by a key generation device (10). Further, a user secret key in which a policy restricting an object to be signed is set is generated using the master secret key of each group for each user...