Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2005-01-26
2009-06-02
Zand, Kambiz (Department: 2434)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C726S017000
Reexamination Certificate
active
07543150
ABSTRACT:
In a data center architecture or the like, the present invention provides a method for setting up hosting environments concurrently by loading a boot image by means of network boot or the like, allowing for fast booting even with a large boot image, while preserving security. A boot image is divided into a plurality of parts. Computer resources have their public keys stored in their BIOS ROMs and e-signatures are attached to the boot image parts with a private key corresponding to one of the public keys. Also, priority levels in e-signature verification are assigned to the boot image parts. A boot instruction includes priority level setting. Only for boot image parts with that priority level or higher, e-signature verification is performed. By this manner, booting can be performed faster than booting involving verification of the e-signature to a whole boot image.
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Sun microsystems; Secure WAN boot- Toward a Lights-Out Environment; Feb. 2004; Sun Microsystems White paper; pp. 1-16.
Haga Futoshi
Ishizaki Takeshi
Kudo Yutaka
Hitachi , Ltd.
Rahim Monjour
Townsend and Townsend / and Crew LLP
Zand Kambiz
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