| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize secrecy of data on the air links and/or data with the other terminal of a mobile terminal. SOLUTION: One mobile terminal 1 for communicating with plural base stations 4 and 1004 which provide different mobile communication networks or services realizes the secrecy of data on plural air links with the plural base stations 4 and 1004 by using one enciphering/deciphering means 3.
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