Security Measures for Mobile Devices
MOF: A New High-speed Method for an Elliptic Curve Cryptosystem

Accompanying the advent of the "ubiquitous information society", various mobile devices like mobile phones and non-contact IC (or "smart") cards are continuing to advance. As regards such advanced mobile devices, there are calls for high-speed security measures that are more secure that those available up till now. Accordingly, at Systems Development Laboratory, we have successfully developed a new high-speed technique called "Mutual Opposite Form" (MOF) for Elliptic Curve Cryptosystem--which is the optimum cryptographic technology in such mobile devices.

With this background in mind, we asked Kasuyuki Okeya from the Security Technology Research Center of Systems Development Laboratory, Hitachi, Ltd. --which has been continuing R&D on various security technologies in internet fields--to talk about the fundamental background of cryptography and his work on ground-breaking technologies for speeding up encryption used in the ubiquitous information society.

* Professional affiliation and official position are at the time of publication.
(Publication: Feb. 18, 2005)

• Previous page
• Prologue
• 11. Greeting the advent of the ubiquitous information society
• 22. The appearance of a new concept called public key cryptosystems
• 33. The shift from RSA cryptosystems to more secure cryptosystem: Elliptic Curve Cryptosystems
• 44. The shift from NAF to a more efficient calculation method: MOF
• 55. Specific calculation process by using MOF
• 66. MOF opens the way to the future
• Next page1. Greeting the advent of the ubiquitous information society

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