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163 lines
3.7 KiB
Plaintext
163 lines
3.7 KiB
Plaintext
@c Copyright (C) 2004 Free Software Foundation, Inc.
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@c This is part of the GnuPG manual.
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@c For copying conditions, see the file GnuPG.texi.
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@c
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@c This is included by tools.texi.
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@c
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@c Begin GnuPG 1.x specific stuff
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@ifset gpgone
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@macro gpgvname
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gpgv
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@end macro
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@manpage gpgv.1
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@node gpgv
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@section Verify OpenPGP signatures
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@ifset manverb
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.B gpgv
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\- Verify OpenPGP signatures
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@end ifset
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@mansect synopsis
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@ifset manverb
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.B gpgv
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.RI [ options ]
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.I signed_files
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@end ifset
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@end ifset
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@c End GnuPG 1.x specific stuff
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@c Begin GnuPG 2 specific stuff
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@ifclear gpgone
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@macro gpgvname
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gpgv2
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@end macro
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@manpage gpgv2.1
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@node gpgv
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@section Verify OpenPGP signatures
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@ifset manverb
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.B gpgv2
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\- Verify OpenPGP signatures
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@end ifset
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@mansect synopsis
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@ifset manverb
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.B gpgv2
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.RI [ options ]
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.I signed_files
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@end ifset
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@end ifclear
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@c End GnuPG 2 specific stuff
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@mansect description
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@code{@gpgvname} is an OpenPGP signature verification tool.
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This program is actually a stripped down version of @code{gpg} which is
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only able to check signatures. It is somewhat smaller than the fully blown
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@code{gpg} and uses a different (and simpler) way to check that
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the public keys used to make the signature are valid. There are
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no configuration files and only a few options are implemented.
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@code{@gpgvname} assumes that all keys in the keyring are trustworthy.
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By default it uses a keyring named @file{trustedkeys.gpg} which is
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assumed to be in the home directory as defined by GnuPG or set by an
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option or an environment variable. An option may be used to specify
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another keyring or even multiple keyrings.
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@noindent
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@mansect options
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@code{@gpgvname} recognizes these options:
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@table @gnupgtabopt
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@item --verbose
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@itemx -v
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@opindex verbose
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Gives more information during processing. If used
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twice, the input data is listed in detail.
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@item --quiet
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@itemx -q
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@opindex quiet
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Try to be as quiet as possible.
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@item --keyring @var{file}
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@opindex keyring
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Add @var{file} to the list of keyrings.
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If @var{file} begins with a tilde and a slash, these
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are replaced by the HOME directory. If the filename
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does not contain a slash, it is assumed to be in the
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home-directory ("~/.gnupg" if --homedir is not used).
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@item --status-fd @var{n}
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@opindex status-fd
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Write special status strings to the file descriptor @var{n}. See the
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file DETAILS in the documentation for a listing of them.
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@item --logger-fd @code{n}
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@opindex logger-fd
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Write log output to file descriptor @code{n} and not to stderr.
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@item --ignore-time-conflict
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@opindex ignore-time-conflict
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GnuPG normally checks that the timestamps associated with keys and
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signatures have plausible values. However, sometimes a signature seems to
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be older than the key due to clock problems. This option turns these
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checks into warnings.
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@include opt-homedir.texi
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@end table
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@mansect return value
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The program returns 0 if everything was fine, 1 if at least
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one signature was bad, and other error codes for fatal errors.
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@mansect examples
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@subsection Examples
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@table @asis
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@item @gpgvname @code{pgpfile}
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@itemx @gpgvname @code{sigfile}
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Verify the signature of the file. The second form
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is used for detached signatures, where @code{sigfile} is the detached
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signature (either ASCII armored or binary) and are the signed
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data; if this is not given the name of the file holding the signed data is
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constructed by cutting off the extension (".asc", ".sig" or ".sign") from
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@code{sigfile}.
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@end table
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@mansect environment
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@subsection Environment
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@table @asis
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@item HOME
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Used to locate the default home directory.
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@item GNUPGHOME
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If set directory used instead of "~/.gnupg".
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@end table
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@mansect files
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@subsection FILES
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@table @asis
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@item ~/.gnupg/trustedkeys.gpg
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The default keyring with the allowed keys
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@end table
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@mansect see also
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@command{gpg2}(1)
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@include see-also-note.texi
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