* scd/app.c (is_same_serialno): New.
(check_application_conflict): Use this.
(select_application): Ditto.
(app_switch_current_card): Ditto.
* scd/app-openpgp.c (check_keyidstr): Ignore the card version and also
compare case insensitive.
--
This is required because we change what we emit as serialno of OpenPGP
cards but existing keys still use the old form of the serial
number (i.e. with a firmware version).
See-commit: 3a8250c02031080c6c8eebd5dea03f5f87f9ddd7
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (app_new_register): Call app_munge_serialno for Yubikeys.
(app_munge_serialno): Handle Yubikey serial numbers.
(card_get_serialno): Remove special Yubikey treatment. Drop arg
is_canonical.
(app_get_serialno): Clear ERRNO on error.
(card_get_dispserialno): New. Also change formatting of Yubikey and
OpenPGP numbers to match those printed on the card.
(app_get_dispserialno): New.
* scd/app-openpgp.c (do_getattr): Use app_get_dispserialno.
(yubikey_get_serialno): Remove.
* scd/app-piv.c (get_dispserialno): Remove.
(do_getattr): Use app_get_dispserialno.
--
This patch gets us back to a unique serial number for cards and
provides a stable serial number as printed for Yubikeys.
Because we use a slightly different serial number now for Yubikeys and
cards only supporting OpenPGP card we need to come up with another
change so that the version number of OpenPGP serial numbers are
ignored when comparing card serial numbers. This is so that existing
stub keys of gpg-agent will continue to work.
GnuPG-bug-id: 5100
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (send_keypair_info): Emit the algo string as part
of a KEYPAIRINFO.
* scd/command.c (do_readkey): Ditto.
* scd/app-piv.c (do_readkey): Ditto.
* scd/app-nks.c (do_learn_status_core): Ditto.
(struct fid_cache_s): Add field algostr.
(flush_fid_cache): Release it.
(keygripstr_from_pk_file): Fill it and add it to the cache. Use a
single exit label.
* scd/app-help.c (app_help_get_keygrip_string_pk): Add new arg
r_algostr. Change all callers.
--
This is helpful so that callers do not need to parse the key for this
basic information. Use "scd readkey --info-only" to return the info
status line instead of the key material; using just --info returns the
info in addition to the key material.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/card-util.c (kdf_setup): Fix the default value.
* scd/app-openpgp.c (do_setattr): Support kdf-setup "off" by
Zeitcontrol. Make sure Gnuk and Yubikey work well.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (verify_chv2): Call verify_a_chv with chvno=1
when needed.
--
Confusingly, verify_chv2 has two different purposes; One for
verifying with CHV2 (in addition to CHV1), and the call by
CHECKPIN. For the latter, we should check CHV1.
Fixes-commit: af189be481df02a77e088aa0a60a1fc02dfa12bf
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (do_setattr): Call flush_cache_item always.
--
Only it was called when there was an object with KDF_DATA_LENGTH_MAX.
No matter the VALUELEN, it should be flushed.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (data_objects): It may be longer.
Fixes-commit: 90d0072165cc5c6888f14462392a211de0c4b232
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (data_objects): 0x00FA for binary data.
(do_getattr): Parse the data and send it in status lines.
(get_algorithm_attribute_string): New.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* cd/app-openpgp.c (data_objects): Add 0x00FA.
(do_getattr): Add KEY-ATTR-INFO.
--
See the section 4.4.3.11 Algorithm Information in the OpenPGP card
functional specification version 3.4.1.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (verify_chv2): Check availability of keys in
question.
--
With buggy Gnuk (<= 1.2.15), when no encr/auth keys are available,
it fails decrementing the signature error counter. This change
can avoid the issue.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (do_getattr): New attrubute "UIF".
(do_learn_status): Use that.
--
Actually this is not just convenience but will make it easier to add
new keys to an openpgp card - we will need to change this only at one
place.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (get_manufacturer): New..
(do_getattr): Add new attribute "MANUFACTURER".
(do_learn_status): Always print it.
--
This will make it easy to maintain the list of OpenPGP vendors at just
one place.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/command.c (cmd_keyinfo): Use Gcrypt constants for CAP.
* scd/app-openpgp.c (do_with_keygrip): Adjust for them.
* scd/app-piv.c (do_with_keygrip): Ditto.
--
That makes it easier to read. An open question is whether we should
allow several capabilities and whether they are the ORed or ANDed.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (check_keyidstr): Add optional arg r_use_auth to
test also for OpenPGP.3.
(do_sign): Enable that new mode.
--
This is very useful to allow gpgsm to use a certificate based on the
OpenPGP card's authentication key. That key is usually used for ssh
but it makes sense to use it also for user certificate based
authentication.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (do_setattr): For setting KDF DO, support standard
OpenPGP card, which needs to update PIN.
GnuPG-bug-id: 3891
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (send_keypair_info): Reaturn the key creation time
as part of a KEYPAIRINFO.
(do_readkey): Do not return the KEY-TIME anymore.
--
Sending the KEY_TIME status as part of a READKEY command was only
recently added. It is better to merge that into the KEYPAIRINFO line.
Another patch with chnage this for the consumers of that info.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (retrieve_fprtime_from_card): New.
(do_readkey): Send a KEY_TIME status.
--
It might be easier to fold this into KEYPAIRINFO but for backward
compatibility using a separate status line is safer.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (do_readkey): Use case insensitive match of the
keyref.
(do_writekey, do_sign, do_auth, do_decipher): Ditto.
--
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (struct app_local_s): Add field keyalgo.
(parse_algorithm_attribute): Store the new keyalgo field.
(change_keyattr): Change info message.
(change_keyattr_from_string): Rewrite to also accept a keyref and a
keyalgo string.
(do_genkey): Change the keyattr if a keyalgo string is given.
--
Having this feature makes it easier to use OpenPGP cards in a similar
way to other cards. Note that the explicit changing via SETATTR is
still supported.
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/openpgp-oid.c (openpgp_curve_to_oid): Add optional arg R_NBITS.
Change all callers.
--
In particular for ed25519 and cv25519 it is quite useful to have an
ability to get the required algorithm.
* scd/app-openpgp.c (send_key_attr): Use log_assert.
(do_genkey): Allow prefix.
--
It is more uniform to always use full keyref (e.g. "OPENPGP.1")
instead of just the key number.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (struct app_local_s): New field pincache.
(cache_pin): Set it.
(pin_from_cache): Consult it.
* scd/app-piv.c (struct app_local_s): New field pincache.
(cache_pin): Set it.
(pin_from_cache): Consult it.
--
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/command.c (pincache_put): Add arg pinlen and change all callers
to provide it.
* scd/app-piv.c (cache_pin): New.
(pin_from_cache): New.
(ask_and_prepare_chv): Add args no_cache and r_unpaddedpinlen. Take
PIN from the cache. Return the unpadded length.
(verify_chv): Add arg ctrl. Cache the PIN.
(do_change_chv): Clear PIN cache.
--
The PIV pins are padded but we want to store the unpadded PIN. Thus
the changes to the function.
Code has has been tested by commenting the no_cache parameter because
we the current test certificate was created for PIV.9C which requires
a verification for each use. More testing is required.
GnuPG-bug-id: 4791
Signed-off-by: Werner Koch <wk@gnupg.org>
* 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>
* 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/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/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>
