Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2004-02-26
2008-10-28
Barron, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S400000
Reexamination Certificate
active
07444516
ABSTRACT:
A tamper-resistant certification device receives a certified digital time stamp from a trusted third party, resets a time function and produces a time stamp receipt in an on-line mode; The tamper-resistant certification device receives a digital file from a mobile computing device, and produces a certified digitally signed digital file including a copy of the digital file, time stamp receipt and temporal offset in an off-line mode to evidence the content of the digital file within a defined tolerance of a day and/or time. A processor may be portioned into tamper and non-tamper resistant portions.
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Barron Jr. Gilberto
Intermec IP Corp.
Kane Cordelia
Seed IP Law Group PLLC
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