Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2008-07-08
2008-07-08
Moazzami, Nasser (Department: 2136)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S155000, C713S156000, C713S157000, C713S173000, C713S175000
Reexamination Certificate
active
10659796
ABSTRACT:
In order to apply an electronic signature from a client station having authentication resources at a server, the following steps are carried out: the client station is authenticated at the server, thus establishing an authenticated communication channel; a private key/public key pair is generated at the client station; a signature certificate request generated by means of at least the public key is transmitted from the client station to the server via the authenticated channel; a signature certificate obtained in response to the request is returned via the authenticated channel; this certificate is verified at the client station; an electronic signature is calculated at the client station by means of the private key, after which this private key is destroyed; and the calculated signature is formatted with the aid of the signature certificate received via the authenticated channel.
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Search Report established for FR 0211548.
Arditi David
Frisch Laurent
Mouton Dimitri
Drinker Biddle & Reath LLP
France Telecom
Moazzami Nasser
Yalew Fikremariam
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