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GPG-WKS-SERVER(1) GNU Privacy Guard 2.6 GPG-WKS-SERVER(1) NAME gpg-wks-server - Server providing the Web Key Service SYNOPSIS gpg-wks-server [options] --receive gpg-wks-server [options] --cron gpg-wks-server [options] --list-domains gpg-wks-server [options] --check-key user-id gpg-wks-server [options] --install-key file user-id gpg-wks-server [options] --remove-key user-id gpg-wks-server [options] --revoke-key user-id DESCRIPTION The gpg-wks-server is a server side implementation of the Web Key Service. It receives requests for publication, sends confirmation requests, receives confirmations, and published the key. It also has features to ease the setup and maintenance of a Web Key Directory. When used with the command --receive a single Web Key Service mail is processed. Commonly this command is used with the option --send to di- rectly send the created mails back. See below for an installation example. The command --cron is used for regular cleanup tasks. For example non-con- firmed requested should be removed after their expire time. It is best to run this command once a day from a cronjob. The command --list-domains prints all configured domains. Further it cre- ates missing directories for the configuration and prints warnings pertain- ing to problems in the configuration. The command --check-key (or just --check) checks whether a key with the given user-id is installed. The process returns success in this case; to also print a diagnostic use the option -v. If the key is not installed a diagnostic is printed and the process returns failure; to suppress the di- agnostic, use option -q. More than one user-id can be given; see also op- tion with-file. The command --install-key manually installs a key into the WKD. The argu- ments are a file with the keyblock and the user-id to install. If the first argument resembles a fingerprint the key is taken from the current keyring; to force the use of a file, prefix the first argument with "./". If no arguments are given the parameters are read from stdin; the expected format are lines with the fingerprint and the mailbox separated by a space. The command --remove-key uninstalls a key from the WKD. The process re- turns success in this case; to also print a diagnostic, use option -v. If the key is not installed a diagnostic is printed and the process returns failure; to suppress the diagnostic, use option -q. The command --revoke-key is not yet functional. This tool needs to insert strings into the mails which can be configured using a plain text file. The installed default files for English (`wks-utils.txt') and German (`wks-utils.de.txt') can be copied to the sys- tem configuration directory and changed to local needs. Environment vari- ables in these texts are expanded, the variable ``sigdelim'' is replaced by two dashes and a blank, the variable ``address'' is replaced by the mail address of the key to be published. OPTIONS gpg-wks-server understands these options: -C dir --directory dir Use dir as top level directory for domains. The default is `/var/lib/gnupg/wks'. --from mailaddr Use mailaddr as the default sender address. --header name=value Add the mail header "name: value" to all outgoing mails. --send Directly send created mails using the sendmail command. Requires installation of that command. -o file --output file Write the created mail also to file. Note that the value - for file would write it to stdout. --with-dir When used with the command --list-domains print for each installed domain the domain name and its directory name. --with-file When used with the command --check-key print for each user-id, the address, 'i' for installed key or 'n' for not installed key, and the filename. --verbose Enable extra informational output. --quiet Disable almost all informational output. --version Print version of the program and exit. --help Display a brief help page and exit. EXAMPLES The Web Key Service requires a working directory to store keys pending for publication. As root create a working directory: # mkdir /var/lib/gnupg/wks # chown webkey:webkey /var/lib/gnupg/wks # chmod 2750 /var/lib/gnupg/wks Then under your webkey account create directories for all your domains. Here we do it for "example.net": $ mkdir /var/lib/gnupg/wks/example.net Finally run $ gpg-wks-server --list-domains to create the required sub-directories with the permissions set correctly. For each domain a submission address needs to be configured. All service mails are directed to that address. It can be the same address for all configured domains, for example: $ cd /var/lib/gnupg/wks/example.net $ echo key-submission@example.net >submission-address The protocol requires that the key to be published is sent with an en- crypted mail to the service. Thus you need to create a key for the submis- sion address: $ gpg --batch --passphrase '' --quick-gen-key key-submission@example.net $ gpg -K key-submission@example.net The output of the last command looks similar to this: sec rsa3072 2016-08-30 [SC] C0FCF8642D830C53246211400346653590B3795B uid [ultimate] key-submission@example.net bxzcxpxk8h87z1k7bzk86xn5aj47intu@example.net ssb rsa3072 2016-08-30 [E] Take the fingerprint from that output and manually publish the key: $ gpg-wks-server --install-key C0FCF8642D830C53246211400346653590B3795B \ > key-submission@example.net Finally that submission address needs to be redirected to a script running gpg-wks-server. The procmail command can be used for this: Redirect the submission address to the user "webkey" and put this into webkey's `.proc- mailrc': :0 * !^From: webkey@example.net * !^X-WKS-Loop: webkey.example.net |gpg-wks-server -v --receive \ --header X-WKS-Loop=webkey.example.net \ --from webkey@example.net --send SEE ALSO gpg-wks-client(1) GnuPG 2.5.18 2026-06-12 GPG-WKS-SERVER(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO
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