Title:
ENCRYPTION DEVICE, ENCIPHERING DEVICE, AND DECIPHERING DEVICE
Document Type and Number:
Japanese Patent JP3259724
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an encryption device, an enciphering device, and a deciphering device which are easily installed in an existing network system.
SOLUTION: The encryption device is provided with an enciphering/ encapsulating processing part and a deciphering/decapsulating processing part. The enciphering/encapsulating processing part enciphers plain text data received from a plain text network and refers to a preliminarily determined correspondence relation between addresses and other encryption devices and performs encapsulating processing to newly set a header on the basis of an encryption device corresponding to the address set in the header of plain text data and transmits cipher data generated by this processing to a cipher text network of the same IP sub-network as the plain text network. The deciphering/ decapsuling processing part deciphers cipher data received from a cipher text network to plain text data and performs decapsulating processing to set a header again on the basis of the address set in the header of this plain text data and transmits plain text data generated by this processing to a plain network of the same IP sub-network as the cipher text network.
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Inventors:
Toru Inada
Shinobu Ushirozawa
Shinobu Ushirozawa
Application Number:
JP33577999A
Publication Date:
February 25, 2002
Filing Date:
November 26, 1999
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04L9/36; H04L12/22; H04L12/46; G09C1/00; H04L12/66; H04L29/06; (IPC1-7): H04L12/66; H04L12/46
Other References:
舟辺千江子他，ＩＰＸプロトコル通信の暗号方式，信学技報ＳＳＥ９７−２１，日本
Attorney, Agent or Firm:
Kaneo Miyata (1 person outside)
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