GPGV(1)                                                 GNU Privacy Guard                                                GPGV(1)



NAME
       gpgv - Verify OpenPGP signatures

SYNOPSIS
       gpgv [options] signed_files





DESCRIPTION
       gpgv 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.

       gpgv 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 keyrings.



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
       gpgv 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 a tilde and a slash, these are replaced by the HOME direc-
              tory. 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.  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  HKCU\Software\GNU\GnuPG:Home-
              Dir.




EXAMPLES
       gpgv pgpfile

       gpgv 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.



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 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 1.4.11                                               2010-10-21                                                    GPGV(1)