| 摘要 |
PROBLEM TO BE SOLVED: To provide an information protecting method and an encrypted key acquiring method in ubiquitous computing by a next-generation wearable computer. SOLUTION: In a communication via a meta-server 20 composed of a plurality of servers, first information is encrypted by using an encryption key of a first server 21 within the meta-server 20 to create first cipher information E<SB>1</SB>(DATA3), second information is encrypted by using an encryption key for a second server 22 within the meta-server 20 to create second cipher information E<SB>2</SB>(DATA2), third information is encrypted by using an encryption key for a third server 23 within the meta-server 20 to create third cipher information E<SB>3</SB>(DATA1), and the information is received by the meta-server 20 as transmission source meta-data 100. The first server 21 decodes and processes E<SB>1</SB>(DATA3), the second server 22 decodes and processes E<SB>2</SB>(DATA2) and the third server 23 decodes and processes E<SB>3</SB>(DATA1). COPYRIGHT: (C)2004,JPO
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