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GPGV2(1)                       GNU Privacy Guard                      GPGV2(1)

       gpgv2 - Verify OpenPGP signatures

       gpgv2 [options] signed_files

       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 'trusted-
       keys.gpg' which is assumed to be in the home directory as defined by GnuPG or set by an option or  an  environ-
       ment variable. An option may be used to specify another keyring or even multiple keyrings.

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

       gpgv2 recognizes these options:


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


       -q     Try to be as quiet as possible.

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

              GnuPG  normally  checks  that  the timestamps associated with keys and signatures have plausible values.
              However, 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 command line.  It also overrides any home directory
              stated  through  the environment variable 'GNUPGHOME' or (on W32 systems) by means of the Registry entry

       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.

              The default keyring with the allowed keys.

       HOME   Used to locate the default home directory.

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


       The  full  documentation  for  this  tool is maintained as a Texinfo 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.

GnuPG 2.0.14                      2014-06-30                          GPGV2(1)