gpgv — signature verification tool

     gpgv  [options]  [signed files]

     gpgv is the OpenPGP signature checking tool.

     This program is a stripped down version of gpg which is
able only 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
trustworthy.  There are no options files and only very 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.

     gpgv recognizes these options:

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

−q, −−quiet
          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).
          The filename may be prefixed with a scheme:

          "gnupg‐ring:" is the default one.

−−homedir directory
          Set the name of the home directory to directory If
          this option is not used, it defaults to
          "~/.gnupg". It does not make sense to use this in
          an options file. This also overrides the
          environment variable "GNUPGHOME".


−−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

          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 makes these checks just warnings.

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

gpgv pgpfile

gpgv sigfile [files]
          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 [files] are the signed data; if this
          is not given the name of the file holding the
          signed data is constructed by cutting off the
          extension (".asc", ".sig" or ".sign") from

HOME      Used to locate the default home directory.

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

          The default keyring with the allowed keys