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gpg: Add experimental AKL method "wkd" and option --with-wkd-hash.

Browse source 
* g10/getkey.c (parse_auto_key_locate): Add method "wkd".
(get_pubkey_byname): Implement that method.  Also rename a variable.
* g10/call-dirmngr.c (gpg_dirmngr_wkd_get): New.
* g10/keyserver.c (keyserver_import_wkd): New.
* g10/test-stubs.c (keyserver_import_wkd): Add stub.
* g10/gpgv.c (keyserver_import_wkd): Ditto.
* g10/options.h (opt):  Add field 'with_wkd_hash'.
(AKL_WKD): New.

* g10/gpg.c (oWithWKDHash): New.
(opts): Add option --with-wkd-hash.
(main): Set that option.
* g10/keylist.c (list_keyblock_print): Implement that option.
--

The Web Key Directory is an experimental feature to retrieve a key via
https.  It is similar to OpenPGP DANE but also uses an encryption to
reveal less information about a key lookup.

For example the URI to lookup the key for Joe.Doe@Example.ORG is:

    https://example.org/.well-known/openpgpkey/
    hu/example.org/iy9q119eutrkn8s1mk4r39qejnbu3n5q

(line has been wrapped for rendering purposes).  The hash is a
z-Base-32 encoded SHA-1 hash of the mail address' local-part.  The
address wk@gnupg.org can be used for testing.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-04-27 08:34:29 +02:00
parent c83c6f212e
commit 87de9e19ed
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
12 changed files with 187 additions and 22 deletions
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6
g10/gpg.c
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@ -185,6 +185,7 @@ enum cmd_and_opt_values
oWithICAOSpelling,
oWithKeygrip,
oWithSecret,
oWithWKDHash,
oAnswerYes,
oAnswerNo,
oKeyring,
@ -721,6 +722,7 @@ static ARGPARSE_OPTS opts[] = {
ARGPARSE_s_n (oWithICAOSpelling, "with-icao-spelling", "@"),
ARGPARSE_s_n (oWithKeygrip, "with-keygrip", "@"),
ARGPARSE_s_n (oWithSecret, "with-secret", "@"),
ARGPARSE_s_n (oWithWKDHash, "with-wkd-hash", "@"),
ARGPARSE_s_s (oDisableCipherAlgo, "disable-cipher-algo", "@"),
ARGPARSE_s_s (oDisablePubkeyAlgo, "disable-pubkey-algo", "@"),
ARGPARSE_s_n (oAllowNonSelfsignedUID, "allow-non-selfsigned-uid", "@"),
@ -2575,6 +2577,10 @@ main (int argc, char **argv)
opt.with_secret = 1;
break;
case oWithWKDHash:
opt.with_wkd_hash = 1;
break;
case oSecretKeyring:
/* Ignore this old option. */
break;