发明名称 Method of providing secure tamper-proof acquired data from process instruments
摘要 Field devices used to measure process parameters can also function as a data historian by storing process data and associated time stamps. In response to a request for stored process data, the field device uses a cipher and a secret method to generate an encrypted validation string that is provided along with unencrypted information including the process data and time stamps. A validation service that maintains a secure database of field devices and their associated ciphers and secret methods can validate the unencrypted information by using the validation string.
申请公布号 US2010011216(A1) 申请公布日期 2010.01.14
申请号 US20080218185 申请日期 2008.07.11
申请人 ROSEMOUNT INC. 发明人 HOLM-HANSEN SCOTT GREGORY;BAUSCHKE DIRK WILLY;JOHANSEN SCOTT ANDREW;NGUYEN KHOI MINH
分类号 H04L9/00 主分类号 H04L9/00
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