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    • 10. 发明授权
    • System and method for detecting alteration of objects
    • 用于检测物体变化的系统和方法
    • US07415613B2
    • 2008-08-19
    • US10444379
    • 2003-05-23
    • Jeremy D. ImpsonNader Mehravari
    • Jeremy D. ImpsonNader Mehravari
    • H04L1/00
    • D21H21/40B65D2203/10G06Q10/08
    • A system and method for detecting if an object has been tampered with comprising a characterizer, a comparator, and indicator, and optionally, a signer. The characterizer generates a first digital characterization of an object at a first time and at least one subsequent digital characterization of the object at at least one subsequent time. The comparator compares the first digital characterization with the at least one subsequent digital characterization, and the indicator generates a pre-selected characterization signal if the first and subsequent digital characterizations don't match. Optionally, the first digital characterization can be accompanied by a first digital signature. The signer optionally verifies the digital signature at the at least one subsequent time.
    • 一种用于检测物体是否被篡改的系统和方法,其包括特征器,比较器和指示器,以及可选地,签名者。 表征器在至少一个后续时间在第一时间产生对象的第一数字表征和对象的至少一个随后的数字表征。 比较器将第一数字表征与至少一个随后的数字表征进行比较,并且如果第一和后续数字表征不匹配,则指示符产生预选择的表征信号。 可选地,第一数字表征可以伴随有第一数字签名。 签名者可选地在至少一个后续时间验证数字签名。