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| TLSH_UNITTEST(1) | Debian | TLSH_UNITTEST(1) |
NAME¶
tlsh_unittest - compute TLSH digest values and distanceSYNOPSIS¶
tlsh_unittest [-c <file|digest>] -f <file>
[-T <threshold_value>] [-xlen] [-details]
tlsh_unittest -c <file|digest> -d <digest> [-T
<threshold_value>] [-xlen] [-details]
tlsh_unittest [-c <file|digest> | -xref] -r <dir> [-T
<threshold_value>] [-xlen] [-details]
tlsh_unittest [-c <file|digest> | -xref] -l <listfile> [-T
<threshold_value>] [-xlen] [-details]
tlsh_unittest -version
DESCRIPTION¶
tlsh_unittest can be used to compute TLSH digest values or the distance between digest values in the following ways:- 1.
- To compute the TLSH digest value of a single file (-f file), or a directory of files ( -r dir). This output can be used to create the listfile required by the -l option described below.
- 2.
- To compute the distance between a comparison file or TLSH digest ( -c <file|digest>) and the specified file ( -f file), TLSH digest ( -d digest), directory of files ( -r dir), or list (-l listfile).
- 3.
- To compute the distance between each element in a set of files (-r dir) or files/digests in a list ( -l listfile) with every other element in that set, using the -xref flag
OPTIONS¶
- -c <file|digest>
- Specifies a filename or digest whose TLSH value will be compared to a specified TLSH digest ( -d) OR the TLSH value of a sepcified file ( -f) OR the TLSH values of files in a specified directory ( -r) OR the TLSH values in a specified listfile ( -l)
- -xref
- Results in the calculation of distance between each element in the set. Used only when a set of files ( -r dir) or TLSH values ( -l listfile) is specified.
- -f file
- Specifies a file whose TLSH values are to be computed, or used for comparison ( -c <file|digest>)
- -d digest
- Specifies a TLSH digest value that is to be compared to the specified comparison file or digest ( -c <file|digset>)
- -r dir
- Specifies a recursive directory search for files whose TLSH values are to be computed, or used for comparison ( -c <file|digset> or -xref)
- -l listfile
- Used for comparison purposes only (-c <file|digset> or -xref). Each line in listfile can contain either:
- •
- a TLSH digest value (comparison output will display TLSH digests)
- •
- a tab separated TLSH digest value and its corresponding filename (comparison output will display filenames)
The tab separated listfile can be generated by running tlsh_unittest with either the -f or -r flag
- -xlen
- Determines if the lengths of the compared files is to be included in determining the distance.
- -details
- Results in extra detailed output.
- -T threshold_value
- Used only during comparisons (-c <file|digset> or -xref). Specifies the maximun distance that a comparison must generate before it is reported (defaults to 9999).
EXAMPLE¶
Calculate the distance between two files:tlsh_unittest -c <file 1> -f <file 2>
Calculate the distance between two TLSH digest values:
tlsh_unittest -c <TLSH digest 1> -d <TLSH digest
2>
Calculate the TLSH digest values for every file in a directory. This creates input for the -l option:
tlsh_unittest -r <dir>
Get the distance between a reference TLSH digest value, and a list of TLSH digest values in a file:
tlsh_unittest -c <TLSH digest> -l
<file>
Compare the TLSH value for every file in a directory, to every other file in that directory:
tlsh_unittest -xref -r <dir>