Apparatus and method for securing captured data transmitted between two sources
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United States of America Patent
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May 12, 1998
Issued Date -
N/A
app pub date -
Feb 4, 1997
filing date -
Sep 29, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
Implemented preferably within a video camera, a secure data capture device is used to prevent a captured data clip from be fraudulently altered without detection. The secure data capture device performs 'time-bracketing' and/or 'sequence ordering' operations to preserve data integrity through implementation of two registers incorporating a 'State of the Universe' ('SOTU') number and a 'sequence' number, respectively. Time-bracketing is performed by digitally signing a running hash value representing the data clip appended to the SOTU number before the digital signature is 'timestamped'. Sequence ordering is performed by digitally signing the digest of the data frame or multiple data frames along with the sequence number.
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