Manual Pages for UNIX Operating System command usage for man gpgv2

GNU Privacy Guard                                        GPGV2(1)



NAME
     gpgv2 - Verify OpenPGP signatures

SYNOPSIS
     gpgv2 [options] signed_files




DESCRIPTION
     gpgv2 is an OpenPGP signature verification tool.

     This program is actually  a  stripped-down  version  of  gpg
     which  is  only  able  to  check  signatures. It is somewhat
     smaller than the fully-blown gpg and uses a  different  (and
     simpler)  way to check that the public keys used to make the
     signature are valid. There are no  configuration  files  and
     only a few options are implemented.

     gpgv2 assumes that all keys in the keyring are  trustworthy.
     By  default it uses a keyring named trustedkeys.gpg which is
     assumed to be in the home directory as defined by  GnuPG  or
     set  by  an option or an environment variable. An option may
     be used to specify another keyring or  even  multiple  keyr-
     ings.



RETURN VALUE
     The program returns 0 if everything is fine, 1 if  at  least
     one  signature  was  bad,  and  other  error codes for fatal
     errors.


OPTIONS
     gpgv2 recognizes these options:



     --verbose

     -v   Gives  more  information  during  processing.  If  used
          twice, the input data is listed in detail.


     --quiet

     -q   Try to be as quiet as possible.


     --keyring file
          Add file to the list of keyrings.  If file begins  with



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GNU Privacy Guard                                        GPGV2(1)



          a  tilde  and  a  slash, these are replaced by the HOME
          directory. If the filename does not contain a slash, it
          is  assumed  to be in the home-directory ("~/.gnupg" if
          --homedir is not used).


     --status-fd n
          Write special status strings to the file descriptor  n.
          See the file DETAILS in the documentation for a listing
          of them.


     --logger-fd n
          Write log output  to  file  descriptor  n  and  not  to
          stderr.


     --ignore-time-conflict
          GnuPG normally checks that  the  timestamps  associated
          with  keys  and  signatures have plausible values. How-
          ever, sometimes a signature seems to be older than  the
          key  due  to  clock  problems.  This option turns these
          checks into warnings.


     --homedir dir
          Set the name of the home  directory  to  dir.  If  this
          option  is  not  used,  the  home directory defaults to
          ~/.gnupg.  It is only recognized when given on the com-
          mand line.  It also overrides any home directory stated
          through the environment variable GNUPGHOME or  (on  W32
          systems)    by    means    of    the   Registry   entry
          HKCU\Software\GNU\GnuPG:HomeDir.




EXAMPLES
     gpgv2 pgpfile

     gpgv2 sigfile [datafile]
          Verify the signature of the file. The  second  form  is
          used  for  detached  signatures,  where  sigfile is the
          detached signature (either ASCII-armored or binary) and
          datafile  contains  the signed data; if datafile is "-"
          the signed data is expected on stdin;  if  datafile  is
          not  given the name of the file holding the signed data
          is constructed by cutting off  the  extension  (".asc",
          ".sig" or ".sign") from sigfile.






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GNU Privacy Guard                                        GPGV2(1)



FILES
     ~/.gnupg/trustedkeys.gpg
          The default keyring with the allowed keys.



ENVIRONMENT
     HOME Used to locate the default home directory.


     GNUPGHOME
          If set directory used instead of "~/.gnupg".



SEE ALSO
     gpg2(1)

     The full documentation for this tool is maintained as a Tex-
     info  manual.   If  GnuPG  and the info program are properly
     installed at your site, the command

       info gnupg

     should give you access to the complete  manual  including  a
     menu structure and an index.





ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     _______________________________________
    |   ATTRIBUTE TYPE   |  ATTRIBUTE VALUE|
    |____________________|__________________|_
    | Availability       |  crypto/gnupg   |
    |____________________|__________________|_
    | Interface Stability|  Uncommitted    |
    |____________________|_________________|

NOTES
     Source for GnuPG is available at http://opensolaris.org  and
     at  http://www.gnupg.org.   Documentation  is  available  at
     file:///usr/share/man, and http://www.gnupg.org.








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