* scd/app-openpgp.c (wipe_and_free, wipe_and_free_string): Use them
everywere where we do a wipememory followed by a free.
(pin2hash_if_kdf): Change interface. The input PIN is not anymore
changed. Further there are no more assumptions about the length of
the provided buffer.
(cache_pin): Restructure.
(chvno_to_keyref): New.
(pin_from_cache): New.
(verify_a_chv): Add arg CTRL. Adjust for changed pin2hash_if_kdf.
Chache and retrieve the PIN here.
(verify_chv2): Do not cache the PIN here.
(build_enter_admin_pin_prompt): Add arg 'r_remaining'.
(verify_chv3): Adjust for changed pin2hash_if_kdf. Implement the PIN
cache.
(do_change_pin): Clear the PIN cache. Do not change the PIN here.
Lots of adjustments to cope with the chnaged pin2hash_if_kdf.
(do_sign): Do not cache the PIN here.
--
Note that some of the changes are required because we can't rely that
the PIN is always cached in secure memory. Thus it is better to do an
explicit wipe.
Testing the PIN cache can currently only be done my modifying the
code to do a verification for each operation. Only some basic testing
has been done. Clearing the PIN cache is also not fully
implemented. With the forthcoming changes to app-piv we should be
enter able to test the PIN cache.
Missing stuff:
- The agent should be able to selectively clear the cache on a per
slot base.
- We should replace AESWRAP by OCB.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/call-scd.c (handle_pincache_put): Do not decrypt.
(handle_pincache_get): New.
(inq_needpin): Call it.
* scd/command.c (set_key_for_pincache): New.
(pincache_put): Restructure and set key.
(pincache_get): Ditto.
--
This change does away with encrypting and decrypting the cached PIN in
the agent. There is no need for this we can simply cache the
cryptogram and let scdaemon decrypt after retrieving it from the
agent. This way we do not need to share a key between gpg-agent and
scdaemon and further the cached content is invalid after the scdaemon
process has been replaced.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/command.c (pincache_put): New. Uses a dummy key for now.
(pincache_get): New.
* scd/app.c (select_application): Flush the PIN cache.
(scd_update_reader_status_file): Ditto.
(maybe_switch_app): Call the new prep_reselect function.
(app_write_learn_status): Ditto.
* scd/app-openpgp.c (cache_pin): New helper to cache a PIN.
(verify_chv2): Call it.
(verify_chv3): Call it.
(clear_chv_status): Call it.
(do_change_pin): Call it.
* scd/app-common.h (struct app_ctx_s): Add function 'prep_select'.
* scd/app-openpgp.c (do_prep_reselect): New stub function.
(app_select_openpgp): Set new stub function.
* scd/app-piv.c (do_prep_reselect): New stub function.
(app_select_piv): Set new stub function.
* scd/app-common.h (struct app_ctx_s): Add parameter ctrl to setattr,
sign, auth, decipher, and check_pin. Change all implementations and
callers to pass such a parameter.
--
This is work in progress.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/command.c (open_card_with_request): Use NULL instead of
APPTYPE_NULL.
--
Using the enum is wrong because a string is expected. However it did
harm anything because the value of the enum is 0 and thus equivalent
to NULL.
Signed-off-by: Werner Koch <wk@gnupg.org>
* kbx/keybox.h: Fix naming of arguments.
* scd/ccid-driver.c (print_error) [TEST]: Add missing break. Note
that this is anyway an impossible case.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/apdu.c (apdu_open_reader): Skip use of a reader if it's not the
one specified when it is specified.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app.c (apptype_from_keyref): New.
(maybe_switch_app): Add arg 'keyref' and use this also for switching.
Change all callers to pass a keyref if needed.
--
A drawback of this auto-switching is that the PIN cache of the cards
are cleared. That could be mitigated by having our own cache but we
always tried to avoid that.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (do_reselect): Clear PIN cache flags.
--
It seems that the verification status of the OpenPGP app on a Yubikey
is reset on a select. We need to reflect this in our cache to avoid a
"Bad PIN" error on computing a signature.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/command.c (cmd_serialno): Add option --all.
(open_card_with_request): Implement that option.
* scd/app.c (select_all_additional_applications_internal): New.
(select_additional_application): Add mode to call new function.
--
This option is currently only useful for Yubikeys and basically
ignored with other cards. Its use is
SERIALNO --all
LEARN --force --multi
which will then print keypairinfo and other stuff for the OpenPGP and
PIV application of a Yubikey. Scute is going to use this to allow
using certificates from OpenPGP and PIV at the same time.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (select_additional_application): Return error for unknown
NAME.
--
ERR was only set but not used.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-common.h (APP_LEARN_FLAG_MULTI): New.
* scd/command.c (cmd_learn): Add option --multi.
* scd/app.c (app_write_learn_status): Factor some code out to ...
(write_learn_status_core): new.
(app_write_learn_status): Implement flag --multi.
--
This new option is intended to return information about all active
applications of the current card. Thus if a "SERIALNO openpgp" and a
"SERIALNO piv" has been done in a session the command "LEARN --force
--multi" returns information about both applications.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-common.h (APP_LEARN_FLAG_KEYPAIRINFO): New flag macro..
* scd/command.c (cmd_learn): Pass that flag instead of a plain number.
* scd/app-nks.c (do_learn_status_core): Use new flag.
* scd/app-p15.c (do_learn_status): Ditto.
* scd/app-piv.c (do_learn_status): Ditto.
* scd/app-sc-hsm.c (do_learn_status): Ditto.
* scd/app.c (app_write_learn_status): Ditto.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-nks.c (do_getattr): Add new attributes.
--
Note that these were already added to 2.2 as part of
commit 23784f8bf0
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (select_additional_application): Initialize card of APP.
Break after the selection.
Don't free APP if success.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/ccid-driver.c (bulk_in): Increase timeout by the multiplier
value as defined section 6.2.6 in CCID specification.
--
For TPDU level transfer, it was handled. This is fix for APDU level
transfer.
GnuPG-bug-id: 4646
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/ccid-driver.c (ccid_transceive_apdu_level): Use bBWI=0 for APDU
level transfer.
(ccid_transceive): Use bBWI=0 or the value returend by WTX for TPDU
level transfer.
GnuPG-bug-id: 4654
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app.c (check_application_conflict): Add args to pass a serialno.
* scd/command.c (open_card_with_request): Pass the serialno to
check_application_conflict.
--
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (compare_card_list_items): New.
(app_send_card_list): Sort the card objects by slot.
--
This is required so that in gpg-card a "list N" command always returns
the expected card. Sorting by slot should be sufficient.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-common.h (struct app_ctx_s): Add func ptr 'reselect'.
* scd/app-piv.c (do_reselect): New.
(app_select_piv): Move AID constant to file scope.
* scd/app-openpgp.c (do_reselect): New.
(app_select_openpgp): Move AID constant to file scope.
* scd/app.c (apptype_from_name): New.
(check_application_conflict): Check against all apps of the card.
Always set current_apptype.
(select_additional_application): New.
(maybe_switch_app): New.
(app_write_learn_status, app_readcert, app_readkey, app_getattr)
(app_setattr, app_sign, app_auth, app_decipher, app_writecert)
(app_writekey, app_genkey, app_change_pin, app_check_pin): Use it here.
(app_do_with_keygrip): Force reselect on success.
(app_new_register): Move setting of CURRENT_APPTYPE to ...
(select_application): here so that it will be set to the requested
card.
* scd/command.c (open_card_with_request): Select additional
application if possible.
--
Noet that we will likely need to rework this even more so to get well
defined semantics for card access.
Signed-off-by: Werner Koch <wk@gnupg.org>
