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    • 24. 发明授权
    • System for protection of goods against counterfeiting
    • 保护商品防伪制度
    • US6069955A
    • 2000-05-30
    • US60026
    • 1998-04-14
    • Don CoppersmithClaude A. GreengardCharles P. TresserChai Wah Wu
    • Don CoppersmithClaude A. GreengardCharles P. TresserChai Wah Wu
    • G09C5/00H04L9/32H04L9/00
    • G06Q10/087G06Q20/208G09C5/00H04L9/3226H04L2209/56H04L2209/608
    • A visible seal or label containing a serial number is placed in plain view on the product packaging. The visible label contains the serial number as well as a first public key encrypted version of the serial number. A second or hidden label inside of the package has thereon a second a second encrypted version of the serial number made using a second public key. The hidden label may be secured inside of the package out of sight or may be placed on the back of the visible label and therefore viewable through a transparent case when opened or visible when peeled off. The private keys are known only to the manufacturer. Using a corresponding public key provided by the manufacturer, the consumer, law enforcement agent, or customs inspector can verify that the encrypted version matches the serial number. An advantage to this method is that only the manufacturer can produce matching pairs. Moreover, using a point of sale machine equipped with the public key the sales clerk can authenticate the product in front of the consumer at point of purchase. Additionally, in the case of a CD or other digital medium, the hidden label may comprise a digital watermark of the encrypted serial number such that a consumer, law enforcement agency, or customs inspector can readily detect a counterfeit product.
    • 包含序列号的可见密封或标签放在产品包装上的平面图中。 可见标签包含序列号以及序列号的第一个公钥加密版本。 包装内部的第二个或隐藏的标签上具有使用第二公钥制作的序列号的第二个第二加密版本。 隐藏的标签可以固定在包装内部的视线之外,或者可以被放置在可见标签的背面上,并且因此当被剥离时打开或可见时通过透明外壳可以看到。 私钥只有制造商才知道。 使用制造商提供的相应公钥,消费者,执法人员或海关检查员可以验证加密版本是否符合序列号。 该方法的优点在于只有制造商可以生成匹配对。 此外,使用配有公钥的销售点销售员可以在购买点对消费者面前的产品进行认证。 此外,在CD或其他数字媒体的情况下,隐藏的标签可以包括加密序列号的数字水印,使得消费者,执法机构或海关检查员可以容易地检测到假冒产品。