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kbx: Add support for 32 byte fingerprints. 

* common/userids.c (classify_user_id): Support 32 byte fingerprints.
* kbx/keybox-search-desc.h (KEYDB_SEARCH_MODE_FPR32): New.
(struct keydb_search_desc): Add field fprlen.
* kbx/keybox-defs.h (struct _keybox_openpgp_key_info): Add field
version and increase size of fpr to 32.
* kbx/keybox-blob.c: Define new version 2 for PGP and X509 blobs.
(struct keyboxblob_key): Add field fprlen and increase size of fpr.
(pgp_create_key_part_single): Allow larger fingerprints.
(create_blob_header): Implement blob version 2 and add arg want_fpr32.
(_keybox_create_openpgp_blob): Detect the need for blob version 2.
* kbx/keybox-search.c (blob_get_first_keyid): Support 32 byte
fingerprints.
(blob_cmp_fpr): Ditto.
(blob_cmp_fpr_part): Ditto.
(has_fingerprint): Add arg fprlen and pass on.
(keybox_search): Support KEYDB_SEARCH_MODE_FPR32 and adjust for
changed has_fingerprint.
* kbx/keybox-openpgp.c (parse_key): Support version 5 keys.
* kbx/keybox-dump.c (_keybox_dump_blob): Support blob version 2.

* g10/delkey.c (do_delete_key): Support KEYDB_SEARCH_MODE_FPR32.
* g10/export.c (exact_subkey_match_p): Ditto.
* g10/gpg.c (main): Ditto.
* g10/getkey.c (get_pubkey_byfprint): Adjust for changed
KEYDB_SEARCH_MODE_FPR.
* g10/keydb.c (keydb_search_desc_dump): Support
KEYDB_SEARCH_MODE_FPR32 and adjust for changed KEYDB_SEARCH_MODE_FPR.
(keydb_search): Add new arg fprlen and change all callers.
* g10/keyedit.c (find_by_primary_fpr): Ditto.
* g10/keyid.c (keystr_from_desc): Ditto.
* g10/keyring.c (keyring_search): Ditto.
* g10/keyserver.c (print_keyrec): Ditto.
(parse_keyrec): Ditto.
(keyserver_export): Ditto.
(keyserver_retrieval_screener): Ditto.
(keyserver_import): Ditto.
(keyserver_import_fprint): Ditto.
(keyidlist): Ditto.
(keyserver_get_chunk): Ditto.

* g10/keydb.c (keydb_search): Add new arg fprlen and change all
callers.

* sm/keydb.c (keydb_search_fpr): Adjust for changed
KEYDB_SEARCH_MODE_FPR.
--

This prepares the support for OpenPGP v5 keys.  The new version 2 blob
format is needed for the longer fingerprints and we also use this
opportunity to prepare for storing the keygrip in the blob for faster
lookup by keygrip.  Right now this is not yet functional.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-03-14 08:54:59 +01:00
parent a21ca3a1ef
commit f40e9d6a52
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
19 changed files with 440 additions and 130 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
common/userids.c
View File

@ -226,14 +226,15 @@ classify_user_id (const char *name, KEYDB_SEARCH_DESC *desc, int openpgp_hack)
goto out;
}
}
if (i != 32 && i != 40)
if (i != 32 && i != 40 && i != 64)
{
rc = gpg_error (GPG_ERR_INV_USER_ID); /* Invalid length of fpr. */
goto out;
}
for (i=0,si=s; si < se; i++, si +=2)
desc->u.fpr[i] = hextobyte(si);
for (; i < 20; i++)
desc->fprlen = i;
for (; i < 32; i++)
desc->u.fpr[i]= 0;
mode = KEYDB_SEARCH_MODE_FPR;
}
@ -326,6 +327,8 @@ classify_user_id (const char *name, KEYDB_SEARCH_DESC *desc, int openpgp_hack)
}
desc->u.fpr[i] = c;
}
for (; i < 32; i++)
desc->u.fpr[i]= 0;
mode = KEYDB_SEARCH_MODE_FPR16;
}
else if ((hexlength == 40
@ -333,7 +336,7 @@ classify_user_id (const char *name, KEYDB_SEARCH_DESC *desc, int openpgp_hack)
|| (s[hexlength] == '!' && s[hexlength + 1] == 0)))
|| (!hexprefix && hexlength == 41 && *s == '0'))
{
/* SHA1/RMD160 fingerprint. */
/* SHA1 fingerprint. */
int i;
if (hexlength == 41)
s++;
@ -347,8 +350,31 @@ classify_user_id (const char *name, KEYDB_SEARCH_DESC *desc, int openpgp_hack)
}
desc->u.fpr[i] = c;
}
for (; i < 32; i++)
desc->u.fpr[i]= 0;
mode = KEYDB_SEARCH_MODE_FPR20;
}
else if ((hexlength == 64
&& (s[hexlength] == 0
|| (s[hexlength] == '!' && s[hexlength + 1] == 0)))
|| (!hexprefix && hexlength == 65 && *s == '0'))
{
/* SHA256 fingerprint. */
int i;
if (hexlength == 65)
s++;
for (i=0; i < 32; i++, s+=2)
{
int c = hextobyte(s);
if (c == -1)
{
rc = gpg_error (GPG_ERR_INV_USER_ID);
goto out;
}
desc->u.fpr[i] = c;
}
mode = KEYDB_SEARCH_MODE_FPR32;
}
else if (!hexprefix)
{
/* The fingerprint in an X.509 listing is often delimited by
@ -368,14 +394,17 @@ classify_user_id (const char *name, KEYDB_SEARCH_DESC *desc, int openpgp_hack)
}
if (i == 20)
mode = KEYDB_SEARCH_MODE_FPR20;
for (; i < 32; i++)
desc->u.fpr[i]= 0;
}
if (!mode)
{
/* Still not found. Now check for a space separated
OpenPGP v4 fingerprint like:
8061 5870 F5BA D690 3336 86D0 F2AD 85AC 1E42 B367
or
8061 5870 F5BA D690 3336 86D0 F2AD 85AC 1E42 B367
* OpenPGP v4 fingerprint like:
* 8061 5870 F5BA D690 3336 86D0 F2AD 85AC 1E42 B367
* or
* 8061 5870 F5BA D690 3336 86D0 F2AD 85AC 1E42 B367
* FIXME: Support OpenPGP v5 fingerprint
*/
hexlength = strspn (s, " 0123456789abcdefABCDEF");
if (s[hexlength] && s[hexlength] != ' ')
@ -410,6 +439,8 @@ classify_user_id (const char *name, KEYDB_SEARCH_DESC *desc, int openpgp_hack)
}
if (i == 20)
mode = KEYDB_SEARCH_MODE_FPR20;
for (; i < 32; i++)
desc->u.fpr[i]= 0;
}
}
if (!mode) /* Default to substring search. */

3
g10/delkey.c
View File

@ -71,7 +71,8 @@ do_delete_key (ctrl_t ctrl, const char *username, int secret, int force,
err = classify_user_id (username, &desc, 1);
exactmatch = (desc.mode == KEYDB_SEARCH_MODE_FPR
|| desc.mode == KEYDB_SEARCH_MODE_FPR16
|| desc.mode == KEYDB_SEARCH_MODE_FPR20);
|| desc.mode == KEYDB_SEARCH_MODE_FPR20
|| desc.mode == KEYDB_SEARCH_MODE_FPR32);
if (!err)
err = keydb_search (hd, &desc, 1, NULL);
if (err)

16
g10/export.c
View File

@ -453,8 +453,9 @@ exact_subkey_match_p (KEYDB_SEARCH_DESC *desc, KBNODE node)
case KEYDB_SEARCH_MODE_FPR16:
case KEYDB_SEARCH_MODE_FPR20:
case KEYDB_SEARCH_MODE_FPR32:
case KEYDB_SEARCH_MODE_FPR:
fingerprint_from_pk (node->pkt->pkt.public_key, fpr,&fprlen);
fingerprint_from_pk (node->pkt->pkt.public_key, fpr, &fprlen);
break;
default:
@ -474,13 +475,22 @@ exact_subkey_match_p (KEYDB_SEARCH_DESC *desc, KBNODE node)
break;
case KEYDB_SEARCH_MODE_FPR16:
if (!memcmp (desc->u.fpr, fpr, 16))
if (fprlen == 16 && !memcmp (desc->u.fpr, fpr, 16))
result = 1;
break;
case KEYDB_SEARCH_MODE_FPR20:
if (fprlen == 20 && !memcmp (desc->u.fpr, fpr, 20))
result = 1;
break;
case KEYDB_SEARCH_MODE_FPR32:
if (fprlen == 32 && !memcmp (desc->u.fpr, fpr, 32))
result = 1;
break;
case KEYDB_SEARCH_MODE_FPR:
if (!memcmp (desc->u.fpr, fpr, 20))
if (fprlen == desc->fprlen && !memcmp (desc->u.fpr, fpr, desc->fprlen))
result = 1;
break;

11
g10/getkey.c
View File

@ -899,6 +899,7 @@ key_byname (ctrl_t ctrl, GETKEY_CTX *retctx, strlist_t namelist,
&& ctx->items[n].mode != KEYDB_SEARCH_MODE_LONG_KID
&& ctx->items[n].mode != KEYDB_SEARCH_MODE_FPR16
&& ctx->items[n].mode != KEYDB_SEARCH_MODE_FPR20
&& ctx->items[n].mode != KEYDB_SEARCH_MODE_FPR32
&& ctx->items[n].mode != KEYDB_SEARCH_MODE_FPR)
{
ctx->items[n].skipfnc = skip_unusable;
@ -1654,7 +1655,7 @@ get_pubkey_byfprint (ctrl_t ctrl, PKT_public_key *pk, kbnode_t *r_keyblock,
if (r_keyblock)
*r_keyblock = NULL;
if (fprint_len == 20 || fprint_len == 16)
if (fprint_len == 32 || fprint_len == 20 || fprint_len == 16)
{
struct getkey_ctx_s ctx;
KBNODE kb = NULL;
@ -1670,9 +1671,9 @@ get_pubkey_byfprint (ctrl_t ctrl, PKT_public_key *pk, kbnode_t *r_keyblock,
return gpg_error_from_syserror ();
ctx.nitems = 1;
ctx.items[0].mode = fprint_len == 16 ? KEYDB_SEARCH_MODE_FPR16
: KEYDB_SEARCH_MODE_FPR20;
ctx.items[0].mode = KEYDB_SEARCH_MODE_FPR;
memcpy (ctx.items[0].u.fpr, fprint, fprint_len);
ctx.items[0].fprlen = fprint_len;
if (pk)
ctx.req_usage = pk->req_usage;
rc = lookup (ctrl, &ctx, 0, &kb, &found_key);
@ -1745,8 +1746,6 @@ get_keyblock_byfprint_fast (kbnode_t *r_keyblock, KEYDB_HANDLE *r_hd,
for (i = 0; i < MAX_FINGERPRINT_LEN && i < fprint_len; i++)
fprbuf[i] = fprint[i];
while (i < MAX_FINGERPRINT_LEN)
fprbuf[i++] = 0;
hd = keydb_new ();
if (!hd)
@ -1770,7 +1769,7 @@ get_keyblock_byfprint_fast (kbnode_t *r_keyblock, KEYDB_HANDLE *r_hd,
if (r_hd)
*r_hd = hd;
err = keydb_search_fpr (hd, fprbuf);
err = keydb_search_fpr (hd, fprbuf, fprint_len);
if (gpg_err_code (err) == GPG_ERR_NOT_FOUND)
{
if (!r_hd)

1
g10/gpg.c
View File

@ -5077,6 +5077,7 @@ main (int argc, char **argv)
|| desc.mode == KEYDB_SEARCH_MODE_LONG_KID
|| desc.mode == KEYDB_SEARCH_MODE_FPR16
|| desc.mode == KEYDB_SEARCH_MODE_FPR20
|| desc.mode == KEYDB_SEARCH_MODE_FPR32
|| desc.mode == KEYDB_SEARCH_MODE_FPR
|| desc.mode == KEYDB_SEARCH_MODE_KEYGRIP))
{

4
g10/import.c
View File

@ -2957,9 +2957,7 @@ import_revoke_cert (ctrl_t ctrl, kbnode_t node, unsigned int options,
size_t an;
fingerprint_from_pk (pk, afp, &an);
while (an < MAX_FINGERPRINT_LEN)
afp[an++] = 0;
rc = keydb_search_fpr (hd, afp);
rc = keydb_search_fpr (hd, afp, an);
}
if (rc)
{

46
g10/keydb.c
View File

@ -81,6 +81,7 @@ enum keyblock_cache_states {
struct keyblock_cache {
enum keyblock_cache_states state;
byte fpr[MAX_FINGERPRINT_LEN];
byte fprlen;
iobuf_t iobuf; /* Image of the keyblock. */
int pk_no;
int uid_no;
@ -566,8 +567,12 @@ keydb_search_desc_dump (struct keydb_search_desc *desc)
bin2hex (desc->u.fpr, 20, fpr);
return xasprintf ("FPR20: '%s'",
format_hexfingerprint (fpr, b, sizeof (b)));
case KEYDB_SEARCH_MODE_FPR:
case KEYDB_SEARCH_MODE_FPR32:
bin2hex (desc->u.fpr, 20, fpr);
return xasprintf ("FPR32: '%s'",
format_hexfingerprint (fpr, b, sizeof (b)));
case KEYDB_SEARCH_MODE_FPR:
bin2hex (desc->u.fpr, desc->fprlen, fpr);
return xasprintf ("FPR: '%s'",
format_hexfingerprint (fpr, b, sizeof (b)));
case KEYDB_SEARCH_MODE_ISSUER:
@ -1531,6 +1536,8 @@ keydb_update_keyblock (ctrl_t ctrl, KEYDB_HANDLE hd, kbnode_t kb)
fingerprint_from_pk (pk, desc.u.fpr, &len);
if (len == 20)
desc.mode = KEYDB_SEARCH_MODE_FPR20;
else if (len == 32)
desc.mode = KEYDB_SEARCH_MODE_FPR32;
else
log_bug ("%s: Unsupported key length: %zu\n", __func__, len);
@ -1862,6 +1869,7 @@ keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
int was_reset = hd->is_reset;
/* If an entry is already in the cache, then don't add it again. */
int already_in_cache = 0;
int fprlen;
if (descindex)
*descindex = 0; /* Make sure it is always set on return. */
@ -1902,12 +1910,21 @@ keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
/* NB: If one of the exact search modes below is used in a loop to
walk over all keys (with the same fingerprint) the caching must
have been disabled for the handle. */
if (desc[0].mode == KEYDB_SEARCH_MODE_FPR20)
fprlen = 20;
else if (desc[0].mode == KEYDB_SEARCH_MODE_FPR32)
fprlen = 32;
else if (desc[0].mode == KEYDB_SEARCH_MODE_FPR)
fprlen = desc[0].fprlen;
else
fprlen = 0;
if (!hd->no_caching
&& ndesc == 1
&& (desc[0].mode == KEYDB_SEARCH_MODE_FPR20
|| desc[0].mode == KEYDB_SEARCH_MODE_FPR)
&& hd->keyblock_cache.state == KEYBLOCK_CACHE_FILLED
&& !memcmp (hd->keyblock_cache.fpr, desc[0].u.fpr, 20)
&& fprlen
&& hd->keyblock_cache.state == KEYBLOCK_CACHE_FILLED
&& hd->keyblock_cache.fprlen == fprlen
&& !memcmp (hd->keyblock_cache.fpr, desc[0].u.fpr, fprlen)
/* Make sure the current file position occurs before the cached
result to avoid an infinite loop. */
&& (hd->current < hd->keyblock_cache.resource
@ -1922,8 +1939,7 @@ keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
hd->current = hd->keyblock_cache.resource;
/* HD->KEYBLOCK_CACHE.OFFSET is the last byte in the record.
Seek just beyond that. */
keybox_seek (hd->active[hd->current].u.kb,
hd->keyblock_cache.offset + 1);
keybox_seek (hd->active[hd->current].u.kb, hd->keyblock_cache.offset + 1);
keydb_stats.found_cached++;
return 0;
}
@ -1986,8 +2002,8 @@ keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
keyblock_cache_clear (hd);
if (!hd->no_caching
&& !rc
&& ndesc == 1 && (desc[0].mode == KEYDB_SEARCH_MODE_FPR20
|| desc[0].mode == KEYDB_SEARCH_MODE_FPR)
&& ndesc == 1
&& fprlen
&& hd->active[hd->current].type == KEYDB_RESOURCE_TYPE_KEYBOX)
{
hd->keyblock_cache.state = KEYBLOCK_CACHE_PREPARED;
@ -1997,11 +2013,14 @@ keydb_search (KEYDB_HANDLE hd, KEYDB_SEARCH_DESC *desc,
within the record. */
hd->keyblock_cache.offset
= keybox_offset (hd->active[hd->current].u.kb) - 1;
memcpy (hd->keyblock_cache.fpr, desc[0].u.fpr, 20);
memcpy (hd->keyblock_cache.fpr, desc[0].u.fpr, fprlen);
hd->keyblock_cache.fprlen = fprlen;
}
if (gpg_err_code (rc) == GPG_ERR_NOT_FOUND
&& ndesc == 1 && desc[0].mode == KEYDB_SEARCH_MODE_LONG_KID && was_reset
&& ndesc == 1
&& desc[0].mode == KEYDB_SEARCH_MODE_LONG_KID
&& was_reset
&& !already_in_cache)
kid_not_found_insert (desc[0].u.kid);
@ -2078,12 +2097,13 @@ keydb_search_kid (KEYDB_HANDLE hd, u32 *kid)
* off. If you want to search the whole database, then you need to
* first call keydb_search_reset(). */
gpg_error_t
keydb_search_fpr (KEYDB_HANDLE hd, const byte *fpr)
keydb_search_fpr (KEYDB_HANDLE hd, const byte *fpr, size_t fprlen)
{
KEYDB_SEARCH_DESC desc;
memset (&desc, 0, sizeof desc);
desc.mode = KEYDB_SEARCH_MODE_FPR;
memcpy (desc.u.fpr, fpr, MAX_FINGERPRINT_LEN);
memcpy (desc.u.fpr, fpr, fprlen);
desc.fprlen = fprlen;
return keydb_search (hd, &desc, 1, NULL);
}

6
g10/keydb.h
View File

@ -244,9 +244,9 @@ gpg_error_t keydb_search_next (KEYDB_HANDLE hd);
key id. */
gpg_error_t keydb_search_kid (KEYDB_HANDLE hd, u32 *kid);
/* This is a convenience function for searching for keys with a long
(20 byte) fingerprint. */
gpg_error_t keydb_search_fpr (KEYDB_HANDLE hd, const byte *fpr);
/* This is a convenience function for searching for keys by
* fingerprint. */
gpg_error_t keydb_search_fpr (KEYDB_HANDLE hd, const byte *fpr, size_t fprlen);
/*-- pkclist.c --*/

16
g10/keyedit.c
View File

@ -2566,7 +2566,8 @@ find_by_primary_fpr (ctrl_t ctrl, const char *fpr,
if (classify_user_id (fpr, &desc, 1)
|| !(desc.mode == KEYDB_SEARCH_MODE_FPR
|| desc.mode == KEYDB_SEARCH_MODE_FPR16
|| desc.mode == KEYDB_SEARCH_MODE_FPR20))
|| desc.mode == KEYDB_SEARCH_MODE_FPR20
|| desc.mode == KEYDB_SEARCH_MODE_FPR32))
{
log_error (_("\"%s\" is not a fingerprint\n"), fpr);
err = gpg_error (GPG_ERR_INV_NAME);
@ -2591,10 +2592,16 @@ find_by_primary_fpr (ctrl_t ctrl, const char *fpr,
&& !desc.u.fpr[18]
&& !desc.u.fpr[19])
;
else if (fprlen == 20 && (desc.mode == KEYDB_SEARCH_MODE_FPR20
|| desc.mode == KEYDB_SEARCH_MODE_FPR)
else if (fprlen == 20 && desc.mode == KEYDB_SEARCH_MODE_FPR20
&& !memcmp (fprbin, desc.u.fpr, 20))
;
else if (fprlen == 32 && desc.mode == KEYDB_SEARCH_MODE_FPR32
&& !memcmp (fprbin, desc.u.fpr, 32))
;
else if (desc.mode == KEYDB_SEARCH_MODE_FPR
&& fprlen == desc.fprlen
&& !memcmp (fprbin, desc.u.fpr, fprlen))
;
else
{
log_error (_("\"%s\" is not the primary fingerprint\n"), fpr);
@ -2918,7 +2925,8 @@ keyedit_quick_set_expire (ctrl_t ctrl, const char *fpr, const char *expirestr,
/* Parse the fingerprint. */
if (classify_user_id (subkeyfprs[idx], &desc, 1)
|| !(desc.mode == KEYDB_SEARCH_MODE_FPR
|| desc.mode == KEYDB_SEARCH_MODE_FPR20))
|| desc.mode == KEYDB_SEARCH_MODE_FPR20
|| desc.mode == KEYDB_SEARCH_MODE_FPR32))
{
log_error (_("\"%s\" is not a proper fingerprint\n"),
subkeyfprs[idx] );

26
g10/keyid.c
View File

@ -481,6 +481,32 @@ keystr_from_desc(KEYDB_SEARCH_DESC *desc)
return keystr(keyid);
}
case KEYDB_SEARCH_MODE_FPR32:
{
u32 keyid[2];
keyid[0] = buf32_to_u32 (desc->u.fpr);
keyid[1] = buf32_to_u32 (desc->u.fpr+4);
return keystr(keyid);
}
case KEYDB_SEARCH_MODE_FPR:
{
u32 keyid[2];
if (desc->fprlen == 32)
{
keyid[0] = buf32_to_u32 (desc->u.fpr);
keyid[1] = buf32_to_u32 (desc->u.fpr+4);
}
else
{
keyid[0] = buf32_to_u32 (desc->u.fpr+12);
keyid[1] = buf32_to_u32 (desc->u.fpr+16);
}
return keystr(keyid);
}
case KEYDB_SEARCH_MODE_FPR16:
return "?v3 fpr?";

22
g10/keyring.c
View File

@ -997,6 +997,7 @@ keyring_search (KEYRING_HANDLE hd, KEYDB_SEARCH_DESC *desc,
break;
case KEYDB_SEARCH_MODE_FPR16:
case KEYDB_SEARCH_MODE_FPR20:
case KEYDB_SEARCH_MODE_FPR32:
case KEYDB_SEARCH_MODE_FPR:
need_fpr = 1;
break;
@ -1134,11 +1135,12 @@ keyring_search (KEYRING_HANDLE hd, KEYDB_SEARCH_DESC *desc,
pk = pkt.pkt.public_key;
++pk_no;
if (need_fpr) {
fingerprint_from_pk (pk, afp, &an);
while (an < 20) /* fill up to 20 bytes */
afp[an++] = 0;
}
if (need_fpr)
{
fingerprint_from_pk (pk, afp, &an);
while (an < 32) /* fill up to 32 bytes */
afp[an++] = 0;
}
if (need_keyid)
keyid_from_pk (pk, aki);
@ -1185,10 +1187,18 @@ keyring_search (KEYRING_HANDLE hd, KEYDB_SEARCH_DESC *desc,
goto found;
break;
case KEYDB_SEARCH_MODE_FPR20:
case KEYDB_SEARCH_MODE_FPR:
if (pk && !memcmp (desc[n].u.fpr, afp, 20))
goto found;
break;
case KEYDB_SEARCH_MODE_FPR32:
if (pk && !memcmp (desc[n].u.fpr, afp, 32))
goto found;
break;
case KEYDB_SEARCH_MODE_FPR:
if (pk && desc[n].fprlen >= 16 && desc[n].fprlen <= 32
&& !memcmp (desc[n].u.fpr, afp, desc[n].fprlen))
goto found;
break;
case KEYDB_SEARCH_MODE_FIRST:
if (pk)
goto found;

68
g10/keyserver.c
View File

@ -527,6 +527,25 @@ print_keyrec (ctrl_t ctrl, int number,struct keyrec *keyrec)
}
break;
/* If we get a modern fingerprint, we have the most
flexibility. */
case KEYDB_SEARCH_MODE_FPR32:
{
u32 kid[2];
keyid_from_fingerprint (ctrl, keyrec->desc.u.fpr, 32, kid);
es_printf("key %s",keystr(kid));
}
break;
case KEYDB_SEARCH_MODE_FPR:
{
u32 kid[2];
keyid_from_fingerprint (ctrl, keyrec->desc.u.fpr, keyrec->desc.fprlen,
kid);
es_printf("key %s",keystr(kid));
}
break;
default:
BUG();
break;
@ -614,7 +633,9 @@ parse_keyrec(char *keystring)
if (err || (work->desc.mode != KEYDB_SEARCH_MODE_SHORT_KID
&& work->desc.mode != KEYDB_SEARCH_MODE_LONG_KID
&& work->desc.mode != KEYDB_SEARCH_MODE_FPR16
&& work->desc.mode != KEYDB_SEARCH_MODE_FPR20))
&& work->desc.mode != KEYDB_SEARCH_MODE_FPR20
&& work->desc.mode != KEYDB_SEARCH_MODE_FPR32
&& work->desc.mode != KEYDB_SEARCH_MODE_FPR))
{
work->desc.mode=KEYDB_SEARCH_MODE_NONE;
return ret;
@ -996,7 +1017,9 @@ keyserver_export (ctrl_t ctrl, strlist_t users)
if (err || (desc.mode != KEYDB_SEARCH_MODE_SHORT_KID
&& desc.mode != KEYDB_SEARCH_MODE_LONG_KID
&& desc.mode != KEYDB_SEARCH_MODE_FPR16
&& desc.mode != KEYDB_SEARCH_MODE_FPR20))
&& desc.mode != KEYDB_SEARCH_MODE_FPR20
&& desc.mode != KEYDB_SEARCH_MODE_FPR32
&& desc.mode != KEYDB_SEARCH_MODE_FPR))
{
log_error(_("\"%s\" not a key ID: skipping\n"),users->d);
continue;
@ -1070,6 +1093,16 @@ keyserver_retrieval_screener (kbnode_t keyblock, void *opaque)
if (fpr_len == 20 && !memcmp (fpr, desc[n].u.fpr, 20))
return 0;
}
else if (desc[n].mode == KEYDB_SEARCH_MODE_FPR32)
{
if (fpr_len == 32 && !memcmp (fpr, desc[n].u.fpr, 32))
return 0;
}
else if (desc[n].mode == KEYDB_SEARCH_MODE_FPR)
{
if (fpr_len == desc[n].fprlen && !memcmp (fpr, desc[n].u.fpr, 32))
return 0;
}
else if (desc[n].mode == KEYDB_SEARCH_MODE_FPR16)
{
if (fpr_len == 16 && !memcmp (fpr, desc[n].u.fpr, 16))
@ -1111,7 +1144,9 @@ keyserver_import (ctrl_t ctrl, strlist_t users)
if (err || (desc[count].mode != KEYDB_SEARCH_MODE_SHORT_KID
&& desc[count].mode != KEYDB_SEARCH_MODE_LONG_KID
&& desc[count].mode != KEYDB_SEARCH_MODE_FPR16
&& desc[count].mode != KEYDB_SEARCH_MODE_FPR20))
&& desc[count].mode != KEYDB_SEARCH_MODE_FPR20
&& desc[count].mode != KEYDB_SEARCH_MODE_FPR32
&& desc[count].mode != KEYDB_SEARCH_MODE_FPR))
{
log_error (_("\"%s\" not a key ID: skipping\n"), users->d);
continue;
@ -1171,10 +1206,13 @@ keyserver_import_fprint (ctrl_t ctrl, const byte *fprint,size_t fprint_len,
desc.mode=KEYDB_SEARCH_MODE_FPR16;
else if(fprint_len==20)
desc.mode=KEYDB_SEARCH_MODE_FPR20;
else if(fprint_len==32)
desc.mode=KEYDB_SEARCH_MODE_FPR32;
else
return -1;
memcpy(desc.u.fpr,fprint,fprint_len);
desc.fprlen = fprint_len;
/* TODO: Warn here if the fingerprint we got doesn't match the one
we asked for? */
@ -1291,20 +1329,23 @@ keyidlist (ctrl_t ctrl, strlist_t users, KEYDB_SEARCH_DESC **klist,
This is because it's easy to calculate any sort of keyid
from a v4 fingerprint, but not a v3 fingerprint. */
if(node->pkt->pkt.public_key->version<4)
if (node->pkt->pkt.public_key->version < 4)
{
(*klist)[*count].mode=KEYDB_SEARCH_MODE_LONG_KID;
keyid_from_pk(node->pkt->pkt.public_key,
(*klist)[*count].u.kid);
}
else
{
{
size_t dummy;
(*klist)[*count].mode=KEYDB_SEARCH_MODE_FPR20;
fingerprint_from_pk(node->pkt->pkt.public_key,
(*klist)[*count].u.fpr,&dummy);
}
if (node->pkt->pkt.public_key->version == 4)
(*klist)[*count].mode = KEYDB_SEARCH_MODE_FPR20;
else
(*klist)[*count].mode = KEYDB_SEARCH_MODE_FPR32;
fingerprint_from_pk (node->pkt->pkt.public_key,
(*klist)[*count].u.fpr,&dummy);
}
/* This is a little hackish, using the skipfncvalue as a
void* pointer to the keyserver spec, but we don't need
@ -1621,9 +1662,10 @@ keyserver_get_chunk (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
int quiet = 0;
if (desc[idx].mode == KEYDB_SEARCH_MODE_FPR20
|| desc[idx].mode == KEYDB_SEARCH_MODE_FPR32
|| desc[idx].mode == KEYDB_SEARCH_MODE_FPR16)
{
n = 1+2+2*20;
n = 1+2+2*32;
if (idx && linelen + n > MAX_KS_GET_LINELEN)
break; /* Declare end of this chunk. */
linelen += n;
@ -1635,10 +1677,12 @@ keyserver_get_chunk (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
{
strcpy (pattern[npat], "0x");
bin2hex (desc[idx].u.fpr,
desc[idx].mode == KEYDB_SEARCH_MODE_FPR32? 32 :
desc[idx].mode == KEYDB_SEARCH_MODE_FPR20? 20 : 16,
pattern[npat]+2);
npat++;
if (desc[idx].mode == KEYDB_SEARCH_MODE_FPR20)
if (desc[idx].mode == KEYDB_SEARCH_MODE_FPR20
|| desc[idx].mode == KEYDB_SEARCH_MODE_FPR32)
npat_fpr++;
}
}
@ -1717,7 +1761,7 @@ keyserver_get_chunk (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
}
}
/* Remember now many of search items were considered. Note that
/* Remember how many of the search items were considered. Note that
this is different from NPAT. */
*r_ndesc_used = idx;

109
kbx/keybox-blob.c
View File

@ -62,7 +62,8 @@
2 = OpenPGP
3 = X509
- byte Version number of this blob type
1 = The only defined value
1 = Blob with 20 byte fingerprints
2 = Blob with 32 byte fingerprints and no keyids.
- u16 Blob flags
bit 0 = contains secret key material (not used)
bit 1 = ephemeral blob (e.g. used while querying external resources)
@ -70,19 +71,36 @@
certificate
- u32 The length of the keyblock or certificate
- u16 [NKEYS] Number of keys (at least 1!) [X509: always 1]
- u16 Size of the key information structure (at least 28).
- u16 Size of the key information structure (at least 28 or 56).
- NKEYS times:
Version 1 blob:
- b20 The fingerprint of the key.
Fingerprints are always 20 bytes, MD5 left padded with zeroes.
- u32 Offset to the n-th key's keyID (a keyID is always 8 byte)
or 0 if not known which is the case only for X.509.
Note that this separate keyid is not anymore used by
gnupg since the support for v3 keys has been removed.
We create this field anyway for backward compatibility with
old EOL-ed versions. Eventually we will completely move
to the version 2 blob format.
- u16 Key flags
bit 0 = qualified signature (not yet implemented}
- u16 RFU
- bN Optional filler up to the specified length of this
structure.
Version 2 blob:
- b32 The fingerprint of the key. This fingerprint is
either 20 or 32 bytes. A 20 byte fingerprint is
right filled with zeroes.
- u16 Key flags
bit 0 = qualified signature (not yet implemented}
bit 7 = 32 byte fingerprint in use.
- u16 RFU
- b20 keygrip
- bN Optional filler up to the specified length of this
structure.
- u16 Size of the serial number (may be zero)
- bN The serial number. N as giiven above.
- bN The serial number. N as given above.
- u16 Number of user IDs
- u16 [NUIDS] Size of user ID information structure
- NUIDS times:
@ -172,15 +190,12 @@ struct membuf {
};
/* #if MAX_FINGERPRINT_LEN < 20 */
/* #error fingerprints are 20 bytes */
/* #endif */
struct keyboxblob_key {
char fpr[20];
char fpr[32];
u32 off_kid;
ulong off_kid_addr;
u16 flags;
u16 fprlen; /* Either 20 or 32 */
};
struct keyboxblob_uid {
u32 off;
@ -380,10 +395,9 @@ pgp_create_key_part_single (KEYBOXBLOB blob, int n,
int off;
fprlen = kinfo->fprlen;
if (fprlen > 20)
fprlen = 20;
memcpy (blob->keys[n].fpr, kinfo->fpr, fprlen);
if (fprlen != 20) /* v3 fpr - shift right and fill with zeroes. */
blob->keys[n].fprlen = fprlen;
if (fprlen < 20) /* v3 fpr - shift right and fill with zeroes. */
{
memmove (blob->keys[n].fpr + 20 - fprlen, blob->keys[n].fpr, fprlen);
memset (blob->keys[n].fpr, 0, 20 - fprlen);
@ -533,30 +547,51 @@ release_kid_list (struct keyid_list *kl)
}
/* Create a new blob header. If WANT_FPR32 is set a version 2 blob is
* created. */
static int
create_blob_header (KEYBOXBLOB blob, int blobtype, int as_ephemeral)
create_blob_header (KEYBOXBLOB blob, int blobtype, int as_ephemeral,
int want_fpr32)
{
struct membuf *a = blob->buf;
int i;
put32 ( a, 0 ); /* blob length, needs fixup */
put8 ( a, blobtype);
put8 ( a, 1 ); /* blob type version */
put8 ( a, want_fpr32? 2:1 ); /* blob type version */
put16 ( a, as_ephemeral? 2:0 ); /* blob flags */
put32 ( a, 0 ); /* offset to the raw data, needs fixup */
put32 ( a, 0 ); /* length of the raw data, needs fixup */
put16 ( a, blob->nkeys );
put16 ( a, 20 + 4 + 2 + 2 ); /* size of key info */
if (want_fpr32)
put16 ( a, 32 + 2 + 2 + 20); /* size of key info */
else
put16 ( a, 20 + 4 + 2 + 2 ); /* size of key info */
for ( i=0; i < blob->nkeys; i++ )
{
put_membuf (a, blob->keys[i].fpr, 20);
blob->keys[i].off_kid_addr = a->len;
put32 ( a, 0 ); /* offset to keyid, fixed up later */
put16 ( a, blob->keys[i].flags );
put16 ( a, 0 ); /* reserved */
if (want_fpr32)
{
put_membuf (a, blob->keys[i].fpr, blob->keys[i].fprlen);
blob->keys[i].off_kid_addr = a->len;
if (blob->keys[i].fprlen == 32)
put16 ( a, (blob->keys[i].flags | 0x80));
else
put16 ( a, blob->keys[i].flags);
put16 ( a, 0 ); /* reserved */
/* FIXME: Put the real grip here instead of the filler. */
put_membuf (a, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 20);
}
else
{
log_assert (blob->keys[i].fprlen <= 20);
put_membuf (a, blob->keys[i].fpr, 20);
blob->keys[i].off_kid_addr = a->len;
put32 ( a, 0 ); /* offset to keyid, fixed up later */
put16 ( a, blob->keys[i].flags );
put16 ( a, 0 ); /* reserved */
}
}
put16 (a, blob->seriallen); /*fixme: check that it fits into 16 bits*/
@ -593,11 +628,14 @@ create_blob_header (KEYBOXBLOB blob, int blobtype, int as_ephemeral)
/* space where we write keyIDs and other stuff so that the
pointers can actually point to somewhere */
if (blobtype == KEYBOX_BLOBTYPE_PGP)
if (blobtype == KEYBOX_BLOBTYPE_PGP && !want_fpr32)
{
/* We need to store the keyids for all pgp v3 keys because those key
IDs are not part of the fingerprint. While we are doing that, we
fixup all the keyID offsets */
/* For version 1 blobs, we need to store the keyids for all v3
* keys because those key IDs are not part of the fingerprint.
* While we are doing that, we fixup all the keyID offsets. For
* version 2 blobs (which can't carry v3 keys) we compute the
* keyids in the fly because they are just stripped down
* fingerprints. */
for (i=0; i < blob->nkeys; i++ )
{
if (blob->keys[i].off_kid)
@ -711,9 +749,27 @@ _keybox_create_openpgp_blob (KEYBOXBLOB *r_blob,
{
gpg_error_t err;
KEYBOXBLOB blob;
int need_fpr32 = 0;
*r_blob = NULL;
/* Check whether we need a blob with 32 bit fingerprints. We could
* use this always but for backward compatiblity we do this only for
* v5 keys. */
if (info->primary.version == 5)
need_fpr32 = 1;
else
{
struct _keybox_openpgp_key_info *kinfo;
for (kinfo = &info->subkeys; kinfo; kinfo = kinfo->next)
if (kinfo->version == 5)
{
need_fpr32 = 1;
break;
}
}
blob = xtrycalloc (1, sizeof *blob);
if (!blob)
return gpg_error_from_syserror ();
@ -756,7 +812,8 @@ _keybox_create_openpgp_blob (KEYBOXBLOB *r_blob,
init_membuf (&blob->bufbuf, 1024);
blob->buf = &blob->bufbuf;
err = create_blob_header (blob, KEYBOX_BLOBTYPE_PGP, as_ephemeral);
err = create_blob_header (blob, KEYBOX_BLOBTYPE_PGP,
as_ephemeral, need_fpr32);
if (err)
goto leave;
err = pgp_create_blob_keyblock (blob, image, imagelen);
@ -943,7 +1000,7 @@ _keybox_create_x509_blob (KEYBOXBLOB *r_blob, ksba_cert_t cert,
init_membuf (&blob->bufbuf, 1024);
blob->buf = &blob->bufbuf;
/* write out what we already have */
rc = create_blob_header (blob, KEYBOX_BLOBTYPE_X509, as_ephemeral);
rc = create_blob_header (blob, KEYBOX_BLOBTYPE_X509, as_ephemeral, 0);
if (rc)
goto leave;
rc = x509_create_blob_cert (blob, cert);

5
kbx/keybox-defs.h
View File

@ -99,10 +99,11 @@ struct _keybox_openpgp_key_info
{
struct _keybox_openpgp_key_info *next;
int algo;
int version;
unsigned char grip[20];
unsigned char keyid[8];
int fprlen; /* Either 16 or 20 */
unsigned char fpr[20];
int fprlen; /* Either 16, 20 or 32 */
unsigned char fpr[32];
};
struct _keybox_openpgp_uid_info

30
kbx/keybox-dump.c
View File

@ -170,6 +170,7 @@ _keybox_dump_blob (KEYBOXBLOB blob, FILE *fp)
ulong nserial;
ulong unhashed;
const byte *p;
int is_fpr32; /* blob ersion 2 */
buffer = _keybox_get_blob_image (blob, &length);
@ -207,7 +208,9 @@ _keybox_dump_blob (KEYBOXBLOB blob, FILE *fp)
fprintf (fp, "[can't dump this blob type]\n");
return 0;
}
/* Here we have either BLOGTYPE_X509 or BLOBTYPE_OPENPGP */
fprintf (fp, "Version: %d\n", buffer[5]);
is_fpr32 = buffer[5] == 2;
if (length < 40)
{
@ -267,15 +270,24 @@ _keybox_dump_blob (KEYBOXBLOB blob, FILE *fp)
ulong kidoff, kflags;
fprintf (fp, "Key-Fpr[%lu]: ", n );
for (i=0; i < 20; i++ )
fprintf (fp, "%02X", p[i]);
kidoff = get32 (p + 20);
fprintf (fp, "\nKey-Kid-Off[%lu]: %lu\n", n, kidoff );
fprintf (fp, "Key-Kid[%lu]: ", n );
/* fixme: check bounds */
for (i=0; i < 8; i++ )
fprintf (fp, "%02X", buffer[kidoff+i] );
kflags = get16 (p + 24 );
if (is_fpr32)
{
kflags = get16 (p + 32 );
for (i=0; i < ((kflags & 0x80)?32:20); i++ )
fprintf (fp, "%02X", p[i]);
}
else
{
for (i=0; i < 20; i++ )
fprintf (fp, "%02X", p[i]);
kidoff = get32 (p + 20);
fprintf (fp, "\nKey-Kid-Off[%lu]: %lu\n", n, kidoff );
fprintf (fp, "Key-Kid[%lu]: ", n );
/* fixme: check bounds */
for (i=0; i < 8; i++ )
fprintf (fp, "%02X", buffer[kidoff+i] );
kflags = get16 (p + 24 );
}
fprintf( fp, "\nKey-Flags[%lu]: %04lX\n", n, kflags);
}

85
kbx/keybox-openpgp.c
View File

@ -265,14 +265,17 @@ parse_key (const unsigned char *data, size_t datalen,
unsigned char hashbuffer[768];
gcry_md_hd_t md;
int is_ecc = 0;
int is_v5;
/* unsigned int pkbytes; for v5: # of octets of the public key params. */
struct keyparm_s keyparm[OPENPGP_MAX_NPKEY];
unsigned char *helpmpibuf[OPENPGP_MAX_NPKEY] = { NULL };
if (datalen < 5)
return gpg_error (GPG_ERR_INV_PACKET);
version = *data++; datalen--;
if (version < 2 || version > 4 )
if (version < 2 || version > 5 )
return gpg_error (GPG_ERR_INV_PACKET); /* Invalid version. */
is_v5 = version == 5;
/*timestamp = ((data[0]<<24)|(data[1]<<16)|(data[2]<<8)|(data[3]));*/
data +=4; datalen -=4;
@ -288,6 +291,15 @@ parse_key (const unsigned char *data, size_t datalen,
return gpg_error (GPG_ERR_INV_PACKET);
algorithm = *data++; datalen--;
if (is_v5)
{
if (datalen < 4)
return gpg_error (GPG_ERR_INV_PACKET);
/* pkbytes = buf32_to_uint (data); */
data += 4;
datalen -= 4;
}
switch (algorithm)
{
case PUBKEY_ALGO_RSA:
@ -315,6 +327,7 @@ parse_key (const unsigned char *data, size_t datalen,
return gpg_error (GPG_ERR_UNKNOWN_ALGORITHM);
}
ki->version = version;
ki->algo = algorithm;
for (i=0; i < npkey; i++ )
@ -411,29 +424,63 @@ parse_key (const unsigned char *data, size_t datalen,
have a scatter-gather enabled hash function. What we do here
is to use a static buffer if this one is large enough and
only use the regular hash functions if this buffer is not
large enough. */
if ( 3 + n < sizeof hashbuffer )
large enough.
FIXME: Factor this out to a shared fingerprint function.
*/
if (version == 5)
{
hashbuffer[0] = 0x99; /* CTB */
hashbuffer[1] = (n >> 8); /* 2 byte length header. */
hashbuffer[2] = n;
memcpy (hashbuffer + 3, data_start, n);
gcry_md_hash_buffer (GCRY_MD_SHA1, ki->fpr, hashbuffer, 3 + n);
if ( 5 + n < sizeof hashbuffer )
{
hashbuffer[0] = 0x9a; /* CTB */
hashbuffer[1] = (n >> 24);/* 4 byte length header. */
hashbuffer[2] = (n >> 16);
hashbuffer[3] = (n >> 8);
hashbuffer[4] = (n );
memcpy (hashbuffer + 5, data_start, n);
gcry_md_hash_buffer (GCRY_MD_SHA256, ki->fpr, hashbuffer, 5 + n);
}
else
{
err = gcry_md_open (&md, GCRY_MD_SHA256, 0);
if (err)
return err; /* Oops */
gcry_md_putc (md, 0x9a ); /* CTB */
gcry_md_putc (md, (n >> 24)); /* 4 byte length header. */
gcry_md_putc (md, (n >> 16));
gcry_md_putc (md, (n >> 8));
gcry_md_putc (md, (n ));
gcry_md_write (md, data_start, n);
memcpy (ki->fpr, gcry_md_read (md, 0), 32);
gcry_md_close (md);
}
ki->fprlen = 32;
memcpy (ki->keyid, ki->fpr, 8);
}
else
{
err = gcry_md_open (&md, GCRY_MD_SHA1, 0);
if (err)
return err; /* Oops */
gcry_md_putc (md, 0x99 ); /* CTB */
gcry_md_putc (md, (n >> 8) ); /* 2 byte length header. */
gcry_md_putc (md, n );
gcry_md_write (md, data_start, n);
memcpy (ki->fpr, gcry_md_read (md, 0), 20);
gcry_md_close (md);
if ( 3 + n < sizeof hashbuffer )
{
hashbuffer[0] = 0x99; /* CTB */
hashbuffer[1] = (n >> 8); /* 2 byte length header. */
hashbuffer[2] = (n );
memcpy (hashbuffer + 3, data_start, n);
gcry_md_hash_buffer (GCRY_MD_SHA1, ki->fpr, hashbuffer, 3 + n);
}
else
{
err = gcry_md_open (&md, GCRY_MD_SHA1, 0);
if (err)
return err; /* Oops */
gcry_md_putc (md, 0x99 ); /* CTB */
gcry_md_putc (md, (n >> 8)); /* 2 byte length header. */
gcry_md_putc (md, (n ));
gcry_md_write (md, data_start, n);
memcpy (ki->fpr, gcry_md_read (md, 0), 20);
gcry_md_close (md);
}
ki->fprlen = 20;
memcpy (ki->keyid, ki->fpr+12, 8);
}
ki->fprlen = 20;
memcpy (ki->keyid, ki->fpr+12, 8);
}
leave:

6
kbx/keybox-search-desc.h
View File

@ -38,7 +38,8 @@ typedef enum {
KEYDB_SEARCH_MODE_LONG_KID,
KEYDB_SEARCH_MODE_FPR16,
KEYDB_SEARCH_MODE_FPR20,
KEYDB_SEARCH_MODE_FPR,
KEYDB_SEARCH_MODE_FPR32,
KEYDB_SEARCH_MODE_FPR, /* (Length of fpr in .fprlen) */
KEYDB_SEARCH_MODE_ISSUER,
KEYDB_SEARCH_MODE_ISSUER_SN,
KEYDB_SEARCH_MODE_SN,
@ -49,7 +50,7 @@ typedef enum {
} KeydbSearchMode;
/* Forwward declaration. See g10/packet.h. */
/* Forward declaration. See g10/packet.h. */
struct gpg_pkt_user_id_s;
typedef struct gpg_pkt_user_id_s *gpg_pkt_user_id_t;
@ -73,6 +74,7 @@ struct keydb_search_desc
u32 kid[2]; /* Note that this is in native endianness. */
unsigned char grip[20];
} u;
byte fprlen; /* Only used with KEYDB_SEARCH_MODE_FPR. */
int exact; /* Use exactly this key ('!' suffix in gpg). */
};

70
kbx/keybox-search.c
View File

@ -66,18 +66,31 @@ blob_get_first_keyid (KEYBOXBLOB blob, u32 *kid)
{
const unsigned char *buffer;
size_t length, nkeys, keyinfolen;
int fpr32;
buffer = _keybox_get_blob_image (blob, &length);
if (length < 48)
return 0; /* blob too short */
fpr32 = buffer[5] == 2;
if (fpr32 && length < 56)
return 0; /* blob to short */
nkeys = get16 (buffer + 16);
keyinfolen = get16 (buffer + 18);
if (!nkeys || keyinfolen < 28)
if (!nkeys || keyinfolen < (fpr32?56:28))
return 0; /* invalid blob */
kid[0] = get32 (buffer + 32);
kid[1] = get32 (buffer + 36);
if (fpr32 && (get16 (buffer + 20 + 32) & 0x80))
{
/* 32 byte fingerprint. */
kid[0] = get32 (buffer + 20);
kid[1] = get32 (buffer + 20 + 4);
}
else /* 20 byte fingerprint. */
{
kid[0] = get32 (buffer + 20 + 12);
kid[1] = get32 (buffer + 20 + 16);
}
return 1;
}
@ -229,22 +242,23 @@ blob_cmp_sn (KEYBOXBLOB blob, const unsigned char *sn, int snlen)
For X.509 this is always 1, for OpenPGP this is 1 for the primary
key and 2 and more for the subkeys. */
static int
blob_cmp_fpr (KEYBOXBLOB blob, const unsigned char *fpr)
blob_cmp_fpr (KEYBOXBLOB blob, const unsigned char *fpr, unsigned int fprlen)
{
const unsigned char *buffer;
size_t length;
size_t pos, off;
size_t nkeys, keyinfolen;
int idx;
int idx, fpr32, storedfprlen;
buffer = _keybox_get_blob_image (blob, &length);
if (length < 40)
return 0; /* blob too short */
fpr32 = buffer[5] == 2;
/*keys*/
nkeys = get16 (buffer + 16);
keyinfolen = get16 (buffer + 18 );
if (keyinfolen < 28)
if (keyinfolen < (fpr32?56:28))
return 0; /* invalid blob */
pos = 20;
if (pos + (uint64_t)keyinfolen*nkeys > (uint64_t)length)
@ -253,12 +267,19 @@ blob_cmp_fpr (KEYBOXBLOB blob, const unsigned char *fpr)
for (idx=0; idx < nkeys; idx++)
{
off = pos + idx*keyinfolen;
if (!memcmp (buffer + off, fpr, 20))
if (fpr32)
storedfprlen = (get16 (buffer + off + 32) & 0x80)? 32:20;
else
storedfprlen = 20;
if (storedfprlen == fprlen
&& !memcmp (buffer + off, fpr, storedfprlen))
return idx+1; /* found */
}
return 0; /* not found */
}
/* Helper for has_short_kid and has_long_kid. */
static int
blob_cmp_fpr_part (KEYBOXBLOB blob, const unsigned char *fpr,
int fproff, int fprlen)
@ -267,25 +288,33 @@ blob_cmp_fpr_part (KEYBOXBLOB blob, const unsigned char *fpr,
size_t length;
size_t pos, off;
size_t nkeys, keyinfolen;
int idx;
int idx, fpr32, storedfprlen;
buffer = _keybox_get_blob_image (blob, &length);
if (length < 40)
return 0; /* blob too short */
fpr32 = buffer[5] == 2;
/*keys*/
nkeys = get16 (buffer + 16);
keyinfolen = get16 (buffer + 18 );
if (keyinfolen < 28)
if (keyinfolen < (fpr32?56:28))
return 0; /* invalid blob */
pos = 20;
if (pos + (uint64_t)keyinfolen*nkeys > (uint64_t)length)
return 0; /* out of bounds */
if (fpr32)
fproff = 0; /* keyid are the high-order bits. */
for (idx=0; idx < nkeys; idx++)
{
off = pos + idx*keyinfolen;
if (!memcmp (buffer + off + fproff, fpr, fprlen))
if (fpr32)
storedfprlen = (get16 (buffer + off + 32) & 0x80)? 32:20;
else
storedfprlen = 20;
if (storedfprlen == fproff + fprlen
&& !memcmp (buffer + off + fproff, fpr, fprlen))
return idx+1; /* found */
}
return 0; /* not found */
@ -650,9 +679,9 @@ has_long_kid (KEYBOXBLOB blob, u32 mkid, u32 lkid)
}
static inline int
has_fingerprint (KEYBOXBLOB blob, const unsigned char *fpr)
has_fingerprint (KEYBOXBLOB blob, const unsigned char *fpr, unsigned int fprlen)
{
return blob_cmp_fpr (blob, fpr);
return blob_cmp_fpr (blob, fpr, fprlen);
}
static inline int
@ -1047,12 +1076,25 @@ keybox_search (KEYBOX_HANDLE hd, KEYBOX_SEARCH_DESC *desc, size_t ndesc,
if (pk_no)
goto found;
break;
case KEYDB_SEARCH_MODE_FPR:
case KEYDB_SEARCH_MODE_FPR20:
pk_no = has_fingerprint (blob, desc[n].u.fpr);
pk_no = has_fingerprint (blob, desc[n].u.fpr, desc[n].fprlen);
if (pk_no)
goto found;
break;
case KEYDB_SEARCH_MODE_FPR20:
pk_no = has_fingerprint (blob, desc[n].u.fpr, 20);
if (pk_no)
goto found;
break;
case KEYDB_SEARCH_MODE_FPR32:
pk_no = has_fingerprint (blob, desc[n].u.fpr, 32);
if (pk_no)
goto found;
break;
case KEYDB_SEARCH_MODE_KEYGRIP:
if (has_keygrip (blob, desc[n].u.grip))
goto found;

1
sm/keydb.c
View File

@ -1052,6 +1052,7 @@ keydb_search_fpr (ctrl_t ctrl, KEYDB_HANDLE hd, const byte *fpr)
memset (&desc, 0, sizeof desc);
desc.mode = KEYDB_SEARCH_MODE_FPR;
memcpy (desc.u.fpr, fpr, 20);
desc.fprlen = 20;
return keydb_search (ctrl, hd, &desc, 1);
}