Difference between revisions of "NSRL (National Software Reference Library)"
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|purpose=The NSRL provides a large data set of metadata on computer files which can be used to identify the files and their provenance | |purpose=The NSRL provides a large data set of metadata on computer files which can be used to identify the files and their provenance | ||
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|homepage=http://www.nsrl.nist.gov/ | |homepage=http://www.nsrl.nist.gov/ | ||
|license=[http://www.nsrl.nist.gov/Redistribution_Policy.htm Public domain] | |license=[http://www.nsrl.nist.gov/Redistribution_Policy.htm Public domain] | ||
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[http://www.nsrl.nist.gov/Documents/Data-Formats-of-the-NSRL-Reference-Data-Set-16.pdf Details of the record format] are available. | [http://www.nsrl.nist.gov/Documents/Data-Formats-of-the-NSRL-Reference-Data-Set-16.pdf Details of the record format] are available. | ||
| − | + | == User Experiences == | |
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| − | + | == Development Activity == | |
<!-- Provide *evidence* of development activity of the tool. For example, RSS feeds for code issues or commits. --> | <!-- Provide *evidence* of development activity of the tool. For example, RSS feeds for code issues or commits. --> | ||
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Revision as of 11:09, 12 August 2015
Description
The National Software Reference Library (NSRL) is a large collection of software packages from various sources. Technical metadata about millions of files (including MD5 and SHA-1 hashes) is published every three months as the NSRL Reference Data Set (RDS).
The NSRL RDS is primarily used in forensic investigations to eliminate non-unique, irrelevant files but may also be useful for archives and digital curators of unstructured personal archives to automatically separate significant files from operating system and application parts.
Downloads are available in several variants. The full RDS release is 6 GB in size (.iso file). A "minimal" set of 42,060,540 file hashes is only 2.77 GB in size (.zip file) but only lists one example of every file in the NSRL and cannot be used to determine all possible sources. (All sizes and quantities refer to RDS version 2.49 as of June 2015.) For just filtering out non-significant files from a personal digital archive, the minimal set should be sufficient.
Details of the record format are available.