Navy

Determination of computer storage device contents using statistical drive sampling

Random sampling of an array of storage devices to reliably identify the presence of data

Software & Information Technology

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What data is on these drives?

Today there are increasing requirements to quickly, reliably, and concisely determine the contents of data storage devices, such as computer hard disk drives. Currently, hard disk drive content determination is handled either by exhaustively reading the entire contents of the hard disk drive or by superficially examining the file system through a file browser. As disk drive data storage capacity continues to increase, timely determination of disk content using the above conventional methods is becoming more difficult.

To address this problem, Navy researchers have developed a process to rapidly determine the forensic contents of a hard disk drive or other data storage device (USB memory stick, a flash storage device used with a digital camera, a CD-ROM or DVD-ROM, a magnetic tape, or other random or sequential access storage devices) using statistical sampling. More particularly, the process enables the statistical inference of the forensic contents of a hard disk drive by evaluating a random sample of the hard disk drive’s sectors. In this system, forensic contents denote the actual contents of the hard disk drive, rather than the contents that are only visible through the file system. Statistical drive sampling uses a random number generator to select blocks of data for content identification.

Prenegotiated License Terms

Non-Exclusive
Partially Exclusive
Exclusive
License Execution Fee
$2,000
$3,000
$4,000
Royalty on Net Sales
2%
3%
4%
Minimum Annual Royalty
$1,000
$1,500
$2,500
Annual Patent Fee
$1,000
$1,500
$1,500
Sublicensing
No
Yes
Yes
Sublicensing Royalty on Net Sales
N/A
3%
4%
Sublicensing Royalty on Other Income
N/A
50%
50%

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