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gpg: Fix trustdb for v5key.

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* g10/keydb.h (fpr20_from_pk): New.
* g10/keyid.c (fpr20_from_pk): New.
* g10/tdbio.c (tdbio_search_trust_byfpr): Use fpr20_from_pk.
* g10/trustdb.c (keyid_from_fpr20): New.
(verify_own_keys): Use keyid_from_fpr20.
(tdb_update_ownertrust): Use fpr20_from_pk.
(update_min_ownertrust): Likewise.
(update_validity): Likewise.

--

For the compatibility of existing implementation, we keep the format
of trustdb untouched.  The format of trustdb uses 20-byte fingerprint
for the trust record entry.  To handle both of v4key (with 20-byte
fingerprint) and v5 key (with 32-byte fingerprint), we introduce FPR20
fingerprint, internally.  For v4key, FPR20 is as same as v4
fingerprint.  For v5key, FPR20 is constructed from v5key fingerprint.

GnuPG-bug-id: 5000
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2020-08-07 12:46:09 +09:00
parent 20982bbd75
commit 373c975859
4 changed files with 88 additions and 30 deletions
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g10/keydb.h
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@ -553,6 +553,7 @@ const char *colon_datestr_from_pk (PKT_public_key *pk);
const char *colon_datestr_from_sig (PKT_signature *sig);
const char *colon_expirestr_from_sig (PKT_signature *sig);
byte *fingerprint_from_pk( PKT_public_key *pk, byte *buf, size_t *ret_len );
void fpr20_from_pk (PKT_public_key *pk, byte array[20]);
char *hexfingerprint (PKT_public_key *pk, char *buffer, size_t buflen);
char *format_hexfingerprint (const char *fingerprint,
char *buffer, size_t buflen);