Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular node for directing data and applying cryptography
Patent
1996-11-29
2000-07-18
Hayes, Gail O.
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular node for directing data and applying cryptography
380258, 709228, 709229, 709238, 709245, 709240, 709242, 709243, 709244, 713162, 713168, 713181, H04L 900
Patent
active
060921919
ABSTRACT:
A packet authentication and packet encryption/decryption scheme for a security gateway suitable for a hierarchically organized network system and a mobile computing environment. For the packet authentication, in addition to the end-to-end authentication at the destination side packet processing device, the link-by-link authentication at each intermediate packet processing device in the packet transfer route is used. The link-to-link authentication data being inspected by intermediate nodes and end-to-end data (different from link-to-link data) being inspected by destination node but not being inspected by intermediate nodes. For the packet encryption/decryption, each packet processing device determines whether or not to encrypt/decrypt the packet according to: an information on the computers which are directly managed by this packet processing device; or the encryption information and the signature information provided in the packet; or the encryption information, the signature information, and the encryption/decryption level information provided in the packer.
REFERENCES:
patent: 5455865 (1995-10-01), Perlman
Computer Dictionary, by Microsoft Press, third edition, p. 36, 1997.
"Information Technology-Security Techniques-Data Integrity Mechanism Using a Cruptographic Check Function Employing a Block Cipher Algorithm", International Standard, ISO/IEC 9797: (1993) (E). pp. 1-7.
Inoue Atsushi
Ishiyama Masahiro
Okamoto Toshio
Shimbo Atsushi
Hayes Gail O.
Kabushiki Kaisha Toshiba
Sayadian Hrayr A.
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