Jun Kamada
Fujitsu
29 Papers
653 Citations
Jun Kamada is an academic researcher from Fujitsu. The author has contributed to research in topics: Encryption & Key (cryptography). The author has an hindex of 11, co-authored 29 publications. Previous affiliations of Jun Kamada include Sanyo.
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Papers
Patent
Electronic data storage apparatus with key management function and electronic data storage method
Shoko Iwase,Jun Kamada,Yasutsugu Kuroda,Bintatsu Noda,Etsuo Ono +4 more
- 15 Jun 1999
TL;DR: In this article, a storage apparatus includes a key management unit for managing an individual key unique to the apparatus and a common key shared with other storage apparatuses, and an encryption unit for performing an encrypting process or verifying data for performing the encryption process on electronic data stored in the apparatus to which the unit belongs using the individual key, and performing the encrypted data on the electronic data transmitted to or received from another apparatus using the common key.
222
Patent
Computer system process scheduler determining and executing processes based upon changeable priorities
Jun Kamada,Masanobu Yuhara,Etsuo Ono +2 more
- 21 Mar 1996
TL;DR: In this paper, a fixed-priority process scheduler for a computer system is defined, which allocates a central processing unit (CPU) to executable ones of the processes in descending order of the priorities thereof.
82
Patent
Electronic data storage apparatus, system and method
Yasutsugu Kuroda,Jun Kamada,Etsuo Ono +2 more
- 29 Jul 1998
TL;DR: In this paper, an electronic data storage apparatus includes a data storage unit for storing electronic data, an authentication information generation unit for generating authentication information used in detecting an amendment made to the stored electronic data; and a data output unit for outputting the electronic data after adding to the electronic file the authentication information generated for the file.
79
Patent
Data distributing system and recording medium used for it
Masayuki Hatanaka,Jun Kamada,Takahisa Hatakeyama,Hasebe Takayuki,Seigou Kotani,Takeaki Anazawa,Tadaaki Tonegawa,Junji Nakata,Toshiaki Hioki,Miwa Kanamori,Yoshihiro Hori +10 more
- 16 Nov 2000
TL;DR: In this article, the authors copied encrypted music data and additional information necessary for accessing a server (30) onto a memory card (110), which receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted data and control information data (AC1) for limiting the number of accesses to the memory card from the server.
31
Patent
File management apparatus and method
Jun Kamada,Kuroda Yasutsugu,Etsuo Ono +2 more
- 07 Oct 1999
TL;DR: In this article, an information storage device in which a plurality of storage media having different accessibility is provided with a unit for controlling the retrieval of a portable storage medium which can be retrieved from an information device by selecting the storage medium either as storing the body of a file and the data for use in accessing the file or as storing only the body.
30