mirror of
https://github.com/hashcat/hashcat.git
synced 2024-11-18 06:08:16 +00:00
125 lines
3.2 KiB
Markdown
125 lines
3.2 KiB
Markdown
|
xxhsum(1) -- print or check xxHash non-cryptographic checksums
|
||
|
|
==============================================================
|
||
|
|
|
||
|
|
SYNOPSIS
|
||
|
|
--------
|
||
|
|
|
||
|
|
`xxhsum [<OPTION>] ... [<FILE>] ...`
|
||
|
|
`xxhsum -b [<OPTION>] ...`
|
||
|
|
|
||
|
|
`xxh32sum` is equivalent to `xxhsum -H0`
|
||
|
|
`xxh64sum` is equivalent to `xxhsum -H1`
|
||
|
|
|
||
|
|
|
||
|
|
DESCRIPTION
|
||
|
|
-----------
|
||
|
|
|
||
|
|
Print or check xxHash (32 or 64bit) checksums. When <FILE> is `-`, read
|
||
|
|
standard input.
|
||
|
|
|
||
|
|
`xxhsum` supports a command line syntax similar but not identical to
|
||
|
|
md5sum(1). Differences are:
|
||
|
|
`xxhsum` doesn't have text/binary mode switch (`-b`, `-t`);
|
||
|
|
`xxhsum` always treats file as binary file;
|
||
|
|
`xxhsum` has hash bit width switch (`-H`);
|
||
|
|
|
||
|
|
As xxHash is a fast non-cryptographic checksum algorithm,
|
||
|
|
`xxhsum` should not be used for security related purposes.
|
||
|
|
|
||
|
|
`xxhsum -b` invokes benchmark mode. See [OPTIONS](#OPTIONS) and [EXAMPLES](#EXAMPLES) for details.
|
||
|
|
|
||
|
|
OPTIONS
|
||
|
|
-------
|
||
|
|
|
||
|
|
* `-V`, `--version`:
|
||
|
|
Display xxhsum version
|
||
|
|
|
||
|
|
* `-H`<HASHTYPE>:
|
||
|
|
Hash selection. <HASHTYPE> means `0`=32bits, `1`=64bits.
|
||
|
|
Default value is `1` (64bits)
|
||
|
|
|
||
|
|
* `--little-endian`:
|
||
|
|
Set output hexadecimal checksum value as little endian convention.
|
||
|
|
By default, value is displayed as big endian.
|
||
|
|
|
||
|
|
* `-h`, `--help`:
|
||
|
|
Display help and exit
|
||
|
|
|
||
|
|
**The following four options are useful only when verifying checksums (`-c`)**
|
||
|
|
|
||
|
|
* `-c`, `--check`:
|
||
|
|
Read xxHash sums from the <FILE>s and check them
|
||
|
|
|
||
|
|
* `--quiet`:
|
||
|
|
Exit non-zero for improperly formatted checksum lines
|
||
|
|
|
||
|
|
* `--strict`:
|
||
|
|
Don't print OK for each successfully verified file
|
||
|
|
|
||
|
|
* `--status`:
|
||
|
|
Don't output anything, status code shows success
|
||
|
|
|
||
|
|
* `-w`, `--warn`:
|
||
|
|
Warn about improperly formatted checksum lines
|
||
|
|
|
||
|
|
**The following options are useful only benchmark purpose**
|
||
|
|
|
||
|
|
* `-b`:
|
||
|
|
Benchmark mode. See [EXAMPLES](#EXAMPLES) for details.
|
||
|
|
|
||
|
|
* `-B`<BLOCKSIZE>:
|
||
|
|
Only useful for benchmark mode (`-b`). See [EXAMPLES](#EXAMPLES) for details.
|
||
|
|
<BLOCKSIZE> specifies benchmark mode's test data block size in bytes.
|
||
|
|
Default value is 102400
|
||
|
|
|
||
|
|
* `-i`<ITERATIONS>:
|
||
|
|
Only useful for benchmark mode (`-b`). See [EXAMPLES](#EXAMPLES) for details.
|
||
|
|
<ITERATIONS> specifies number of iterations in benchmark. Single iteration
|
||
|
|
takes at least 2500 milliseconds. Default value is 3
|
||
|
|
|
||
|
|
EXIT STATUS
|
||
|
|
-----------
|
||
|
|
|
||
|
|
`xxhsum` exit `0` on success, `1` if at least one file couldn't be read or
|
||
|
|
doesn't have the same checksum as the `-c` option.
|
||
|
|
|
||
|
|
EXAMPLES
|
||
|
|
--------
|
||
|
|
|
||
|
|
Output xxHash (64bit) checksum values of specific files to standard output
|
||
|
|
|
||
|
|
$ xxhsum -H1 foo bar baz
|
||
|
|
|
||
|
|
Output xxHash (32bit and 64bit) checksum values of specific files to standard
|
||
|
|
output, and redirect it to `xyz.xxh32` and `qux.xxh64`
|
||
|
|
|
||
|
|
$ xxhsum -H0 foo bar baz > xyz.xxh32
|
||
|
|
$ xxhsum -H1 foo bar baz > qux.xxh64
|
||
|
|
|
||
|
|
Read xxHash sums from specific files and check them
|
||
|
|
|
||
|
|
$ xxhsum -c xyz.xxh32 qux.xxh64
|
||
|
|
|
||
|
|
Benchmark xxHash algorithm for 16384 bytes data in 10 times. `xxhsum`
|
||
|
|
benchmarks xxHash algorithm for 32-bit and 64-bit and output results to
|
||
|
|
standard output. First column means algorithm, second column is source data
|
||
|
|
size in bytes, last column means hash generation speed in mega-bytes per
|
||
|
|
seconds.
|
||
|
|
|
||
|
|
$ xxhsum -b -i10 -B16384
|
||
|
|
|
||
|
|
BUGS
|
||
|
|
----
|
||
|
|
|
||
|
|
Report bugs at: https://github.com/Cyan4973/xxHash/issues/
|
||
|
|
|
||
|
|
AUTHOR
|
||
|
|
------
|
||
|
|
|
||
|
|
Yann Collet
|
||
|
|
|
||
|
|
SEE ALSO
|
||
|
|
--------
|
||
|
|
|
||
|
|
md5sum(1)
|