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fix #4506: check that master key matches our master key when loading signing and denomination keys; also do not send master_pub with each signing key, that is not in the spec

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This commit is contained in:
Christian Grothoff 2016-05-18 17:58:32 +02:00
parent 396f29ab9e
commit daff72b63f
2 changed files with 54 additions and 21 deletions
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45
src/exchange/taler-exchange-httpd_keystate.c
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@ -250,6 +250,18 @@ reload_keys_denom_iter (void *cls,
GNUNET_CRYPTO_hash_context_read (ctx->hash_context,
&denom_key_hash,
sizeof (struct GNUNET_HashCode));
if (0 != memcmp (&dki->issue.properties.master,
&TMH_master_public_key,
sizeof (struct TALER_MasterPublicKeyP)))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Master key in denomination key file `%s' does not match! Skipping it.\n",
alias);
return GNUNET_OK;
}
session = TMH_plugin->get_session (TMH_plugin->cls);
if (NULL == session)
return GNUNET_SYSERR;
@ -345,16 +357,13 @@ static json_t *
sign_key_issue_to_json (const struct TALER_ExchangeSigningKeyValidityPS *ski)
{
return
json_pack ("{s:o, s:o, s:o, s:o, s:o, s:o}",
json_pack ("{s:o, s:o, s:o, s:o, s:o}",
"stamp_start",
GNUNET_JSON_from_time_abs (GNUNET_TIME_absolute_ntoh (ski->start)),
"stamp_expire",
GNUNET_JSON_from_time_abs (GNUNET_TIME_absolute_ntoh (ski->expire)),
"stamp_end",
GNUNET_JSON_from_time_abs (GNUNET_TIME_absolute_ntoh (ski->end)),
"master_pub",
GNUNET_JSON_from_data (&ski->master_public_key,
sizeof (struct TALER_MasterPublicKeyP)),
"master_sig",
GNUNET_JSON_from_data (&ski->signature,
sizeof (struct TALER_MasterSignatureP)),
@ -402,6 +411,16 @@ reload_keys_sign_iter (void *cls,
return GNUNET_OK;
}
if (0 != memcmp (&ski->issue.master_public_key,
&TMH_master_public_key,
sizeof (struct TALER_MasterPublicKeyP)))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Master key in signing key file `%s' does not match! Skipping it.\n",
filename);
return GNUNET_OK;
}
/* The signkey is valid at this time, check if it's more recent than
what we have so far! */
if ( (GNUNET_TIME_absolute_ntoh (ctx->current_sign_key_issue.issue.start).abs_value_us <
@ -657,6 +676,17 @@ TMH_KS_acquire_ (const char *location)
TALER_EXCHANGEDB_auditor_iterate (cfg,
&reload_auditor_iter,
key_state);
if (0 != memcmp (&key_state->current_sign_key_issue.issue.master_public_key,
&TMH_master_public_key,
sizeof (struct TALER_MasterPublicKeyP)))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Have no signing key. Bad configuration.\n");
return NULL;
}
ks.purpose.size = htonl (sizeof (ks));
ks.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_KEY_SET);
ks.list_issue_date = GNUNET_TIME_absolute_hton (key_state->reload_time);
@ -897,8 +927,11 @@ TMH_KS_loop (void)
}
/* This will re-initialize 'internal_key_state' with
an initial refcnt of 1 */
(void) TMH_KS_acquire ();
if (NULL == TMH_KS_acquire ())
{
ret = GNUNET_SYSERR;
break;
}
read_again:
errno = 0;
res = read (reload_pipe[0],