1GOSTSUM(1)                     Debian GNU/Linux                     GOSTSUM(1)
2
3
4

NAME

6       gostsum - generates or checks GOST R34.11-94 message digests
7
8

SYNOPSIS

10       gostsum [-bvt] [-c [file]] | [file...]
11
12

DESCRIPTION

14       gostsum  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 R34.11-94.
17
18       Normally  gostsum  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.
24
25
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.
30
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:
35
36              <hashsum> <filename>
37
38              So,  for  example,  if a file was created and its message digest
39              calculated like so:
40
41              echo foo > hash-test-file; gostsum hash-test-file
42
43              gostsum would report:
44
45              1541e09d0aa5971f732991ae1bdfb63f2609edd7536b40f8c2ae7c1e2f99e072
46              hash-test-file
47
48
49       -v     Be more verbose. Print filenames when checking (with -c).
50
51
52       -t     Use test parameter set.  gostsum supports two sets of parameters
53              (which are really parameters  of  GOST  28147-89  block  cipher)
54              specified  in the IETF draft draft-popov-cryptopro-cpalgs-02.txt
55              By default, cryptopro paramset is used. This option enables  use
56              of test paramset as specified in appendices to the GOST.
57
58

CAVEATS

60       The output of gost12sum has a reversed byte order compared to output of
61       openssl dgst command because of the Russian GOST requrements.
62
63

BUGS

65       This manpage is not quite accurate and has formatting inconsistent with
66       other manpages.
67
68       gostsum does not accept standard options like --help.
69
70

AUTHOR

72            Victor Wagner <vitus@wagner.pp.ru>
73
74
75
76
77Openssl                           02 Aug 2017                       GOSTSUM(1)