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gpg: Add experimental support for an issuer fpr.

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* common/openpgpdefs.h (SIGSUBPKT_ISSUER_FPR): New.
* g10/build-packet.c (build_sig_subpkt_from_sig): Add arg PKSK and
insert the issuer fpr if needed.
* g10/sign.c (write_signature_packets): Pass signing key.
(make_keysig_packet): Ditto.
(update_keysig_packet): Ditto.
* g10/parse-packet.c (dump_sig_subpkt): Print issuer fpr.
(parse_one_sig_subpkt): Detect issuer fpr.
(can_handle_critical): Add issuer fpr.
* g10/mainproc.c (check_sig_and_print): Try to get key via fingerprint.
* g10/gpgv.c (keyserver_import_fprint): New stub.
* g10/test-stubs.c (keyserver_import_fprint): New stub.
--

This support is enabled with the --rfc4880bis option and intended to
test to recently proposed issuer fpr.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-06-20 23:58:16 +02:00
parent ee2d9061d7
commit 955baf0436
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
8 changed files with 99 additions and 30 deletions
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18
g10/parse-packet.c
View file

@ -1335,6 +1335,19 @@ dump_sig_subpkt (int hashed, int type, int critical,
(ulong) buf32_to_u32 (buffer),
(ulong) buf32_to_u32 (buffer + 4));
break;
case SIGSUBPKT_ISSUER_FPR:
if (length >= 21)
{
char *tmp;
es_fprintf (listfp, "issuer fpr v%d ", buffer[0]);
tmp = bin2hex (buffer+1, length-1, NULL);
if (tmp)
{
es_fputs (tmp, listfp);
xfree (tmp);
}
}
break;
case SIGSUBPKT_NOTATION:
{
es_fputs ("notation: ", listfp);
@ -1485,6 +1498,10 @@ parse_one_sig_subpkt (const byte * buffer, size_t n, int type)
if (n < 8)
break;
return 0;
case SIGSUBPKT_ISSUER_FPR: /* issuer key ID */
if (n < 21)
break;
return 0;
case SIGSUBPKT_NOTATION:
/* minimum length needed, and the subpacket must be well-formed
where the name length and value length all fit inside the
@ -1543,6 +1560,7 @@ can_handle_critical (const byte * buffer, size_t n, int type)
case SIGSUBPKT_REVOCABLE:
case SIGSUBPKT_REV_KEY:
case SIGSUBPKT_ISSUER: /* issuer key ID */
case SIGSUBPKT_ISSUER_FPR: /* issuer fingerprint */
case SIGSUBPKT_PREF_SYM:
case SIGSUBPKT_PREF_HASH:
case SIGSUBPKT_PREF_COMPR: