Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Central trusted authority provides computer authentication
Reexamination Certificate
2006-12-19
2006-12-19
Barron, Jr., Gilberto (Department: 2134)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Central trusted authority provides computer authentication
C713S175000
Reexamination Certificate
active
07152158
ABSTRACT:
The present invention provides a novel configuration which allows devices capable of processing different signature algorithms to mutually verify public key certificates. In this configuration, public key certificates storing plural signatures based on different signature algorithms such as RSA and ECC are issued and each device selects a signature which can be processed (namely, verified) by itself and verifies the selected signature. Consequently, the novel configuration allows the devices each being capable of verifying only a different signature algorithm to verify the public key certificates of the other devices, so that each device can perform public key certificate verification in the cross-certification and encrypted data communication not only with the other devices having public key certificates attached with signatures based on the same signature algorithm as that of each device, but also with the other devices or providers having public key certificates attached with signatures based on different signature algorithms from that of each device, thereby significantly enhancing the reliability in communication.
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Futamura Ichiro
Ishibashi Yoshihito
Kon Masashi
Matsuyama Shinako
Oka Makoto
Barron Jr. Gilberto
Kananen Ronald P.
Nalven Andrew L.
Rader & Fishman & Grauer, PLLC
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