1GOST12SUM(1)                   Debian GNU/Linux                   GOST12SUM(1)
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NAME

6       gost12sum - generates or checks GOST R34.11-2012 message digests
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SYNOPSIS

10       gost12sum [-bvl] [-c [file]] | [file...]
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DESCRIPTION

14       gost12sum generates or checks GOST hash sums. The algorithm to generate
15       the is reasonably fast and strong enough for most cases. Exact specifi‐
16       cation of the algorithm is in GOST R34.11-2012.
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18       Normally  gost12sum  generates  checksums of all files given to it as a
19       parameter and prints the checksums followed by the filenames. If,  how‐
20       ever,  -c  is  specified,  only one filename parameter is allowed. This
21       file should contain checksums and filenames to  which  these  checksums
22       refer  to,  and  the  files listed in that file are checked against the
23       checksums listed there. See option -c for more information.
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26   OPTIONS
27       -b     Use binary mode. In unix environment,  only  difference  between
28              this  and  the normal mode is an asterisk preceding the filename
29              in the output.
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31       -c     Check gost hashes of all files listed in file against the check‐
32              sum  listed  in the same file. The actual format of that file is
33              the same as output of md5sum.  That is, each line  in  the  file
34              describes a file. A line looks like:
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36              <hashsum> <filename>
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38              So,  for  example,  if a file was created and its message digest
39              calculated like so:
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41              echo foo > hash-test-file; gost12sum hash-test-file
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43              gost12sum would report:
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45              3d4a51ee7713e6467442facefe06f153a303e7bdefbe7f9bdf2edb4ae9c866ff
46              hash-test-file
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48              When  invoked  with  -c option gost12sum normally works silently
49              unless error found. Use -v if you want to see list  of  success‐
50              fully checked files
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53       -v     Be more verbose. Print filenames when checking (with -c).
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56       -l     Use long (512-bit) hash instead of short (256-bit).
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BUGS

60       This manpage is not quite accurate and has formatting inconsistent with
61       other manpages.
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63       gost12sum does not accept standard options like --help.
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AUTHOR

67       gost12sum utility written by Cryptocom LTD
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69       This manual page is written by Victor Wagner  <vitus@wagner.pp.ru>  for
70       Debian GNU/Linux
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75Openssl                           02 Aug 2016                     GOST12SUM(1)