Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Central trusted authority provides computer authentication
Reexamination Certificate
2008-04-15
2008-04-15
Peeso, Thomas R. (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Central trusted authority provides computer authentication
C713S151000, C713S167000, C713S168000
Reexamination Certificate
active
10488542
ABSTRACT:
A method of authenticating an article includes the steps of, at an issuing station, selecting an inherent feature of the article and converting the feature into digital data to form an identification code for the article. An encryptor is used to encrypt the identification code utilizing a secret private key of an asymmetric encryption key pair and associated with the issuing party. The encrypted code is made available on a label accompanying the article. During a subsequent phase and at an authentication station, digital data relating to the feature is determined directly from the article and the code is decrypted utilizing a public key of the pair obtained from a third party in accordance with rules of a public key infrastructure. The determined data and the data relating to the feature retrieved from the decrypted code are compared to authenticate the article.
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Search Report for corresponding Chinese Application No. 02819818.2, filed Aug. 26, 2005.
Centralised Authentication of Products (Pty) Ltd.
Nixon & Vanderhye P.C.
Peeso Thomas R.
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