* 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>
* scd/scdaemon.h: Include app-common.h. Remove inclusion of that
header from all other files.
(card_t, app_t): Move typedef to ...
* scd/app-common.h: here. Use them in the defs.
--
In another patch we will need apptype_t in the ctrl object and thus we
need to reorganize things a bit now. Given that most files need
app-common anyway it makes sense to always include it.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-common.h (cardtype_t): New.
(apptype_t): New.
(struct card_ctx_s): Change type of cardtype.
(struct app_ctx_s): Change type of apptype. Adjust all users.
* scd/app.c (struct app_priority_list_s): Add field apptype.
(strcardtype): New. Use as needed.
(strapptype): New. Use as needed.
--
Using strcmp is lame and we can't use a switch to let the compiler
complain about missed cases.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-common.h (struct card_ctx_s): New.
(struct app_ctx_s): Factor card specific fields out to card_ctx_s.
(app_get_slot): New.
* scd/scdaemon.h (card_t): New.
(struct server_control_s): Rename field app_ctx to card_ctx and change
all users.
* scd/app-dinsig.c: Use app_get_slot and adjust for chang in card
related fields.
* scd/app-geldkarte.c: Ditto.
* scd/app-nks.c: Ditto.
* scd/app-openpgp.c: Ditto.
* scd/app-p15.c: Ditto.
* scd/app-sc-hsm.c: Ditto.
* scd/app.c: Lost of changes to adjust for the changed data
structures. Change all callers.
(app_list_lock): Rename to card_list_lock.
(app_top): Remove.
(card_top): New.
(lock_app): Rename to lock_card and change arg type.
(unlock_app): Rename to unlock_card.
(app_dump_state): Print card and app info.
(app_reset): Rename to card_reset.
(app_new_register): Change for the new data structure.
(deallocate_card): Dealloc card and all apps.
(app_ref): Rename to card_ref.
(app_unref): Rename to card_unref.
(app_unref_locked): Rename to card_unref_locked.
(card_get_serialno): New.
* scd/command.c (cmd_pkdecrypt): Actually use the looked up card and
former app object and not the standard one from the context.
--
Although quite large, this is a straightforward change to separate
card/token related data from card application related data. Before
this change there was a one-to-one relation between card and
application and no way to represent several applications on a card.
The new data structure will allow for such a representation.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (do_with_keygrip): Return a real error code to
avoid misinterpretation of the result. Also fix the case for a too
small buffer.
--
The only real chnage is the case for a too small buffer. That should
in general never happen but if so we now return an error instead of
success.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (get_public_key): Use gnupg_module_name instead of
just "gpg".
--
There is no bug report regarding this and it would be very unlikely
but we should always use the gpg belonging to our code.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-common.h (struct app_ctx_s): Add with_keygrip function.
* scd/app-openpgp.c (do_with_keygrip): New.
* scd/app.c (app_do_with_keygrip): New.
* scd/command.c (cmd_keyinfo): New.
(send_keyinfo): New.
--
KEYGRIP_ACTION_LOOKUP is not yet used. It will be used for directly
asking PK* action to determine an APP.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (struct app_local_s): Add keygrip_str.
(store_keygrip): New.
(read_public_key): Call store_keygrip to hold keygrip.
(get_public_key): Likewise.
(send_keypair_info): Use stored keygrip_str.
(check_keyidstr): Allow use of KEYGRIP.
(do_check_pin): Allow use of KEYGRIP of signing slot.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/command.c (cmd_readkey): New options --info and --info-only.
* scd/app.c (app_readkey): New arg 'flags'.
* scd/app-common.h (APP_READKEY_FLAG_INFO): New.
(struct app_ctx_s): New args 'ctrl' and 'flags' for member readkey.
Change all implementers.
* scd/app-nks.c (do_readkey): Stub implementation of
APP_READKEY_FLAG_INFO.
* scd/app-openpgp.c (do_readkey): Implement APP_READKEY_FLAG_INFO.
* scd/app-piv.c (do_readkey): Ditto.
--
This feature allows to quickly get the keygrip and in most cases also
the usage flags for one specific keyref. Example:
<- readkey --info-only PIV.9D
-> S KEYPAIRINFO FC6061FB457224370B85C6F34DD56CD29E669620 PIV.9D e
-> OK
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/call-agent.c (agent_scd_keypairinfo): Use --keypairinfo.
* sm/call-agent.c (gpgsm_agent_scd_keypairinfo): Ditto.
* scd/app-openpgp.c (do_getattr): Add attributes "$ENCRKEYID" and
"$SIGNKEYID".
* scd/app-piv.c (do_getattr): Ditto.
--
We already have $AUTHKEYID to locate the keyref of the key to be used
with ssh. It will also be useful to have default keyref for
encryption and signing. For example, this will allow us to repalce
the use of "OPENPGP.2" by a app type specific keyref.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/ecdh.c (kek_params_table): Use CIPHER_ALGO_AES192 for
ECC strength 384, according to RFC-6637.
--
Reported-by: Trevor Bentley
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-help.c (app_help_pubkey_from_cert): New.
* scd/command.c (cmd_readkey): Refactor to use that new function and
handle the --advanced flag only here.
* scd/app.c (app_readkey): Remove parm advanced.
* scd/app-common.h (struct app_ctx_s): Remove parm advanced from the
readkey member.
* scd/app-nks.c (do_readkey): Adjust for removed parm.
* scd/app-piv.c (do_readkey): Ditto.
* scd/app-openpgp.c (do_readkey): Ditto.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (app_genkey): Add arg keytype.
* scd/app-common.h (struct app_ctx_s): Fitto for the genkey member.
* scd/command.c (cmd_genkey): Adjust for change.
* scd/iso7816.c (do_generate_keypair): Replace arg read_only by new
args p1 and p2.
(iso7816_read_public_key): Adjust for this.
(iso7816_generate_keypair): Add new args p1 and p2.
* scd/app-openpgp.c (do_genkey): Adjust for changes.
--
The OpenPGP card creates keys according to parameters read from a data
object. Other cards we are about to implement require a direct
specification of the requested keytype. This patch implements the
required changes.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (do_change_pin): Allow prefixing the CHVNO with
"OPENPGP."
* tools/card-call-scd.c (scd_change_pin): Change API to use strings.
* tools/gpg-card-tool.c (cmd_passwd): Adjust for change.
(cmd_unblock): Ditto.
--
The generic keyref allows for better error detection in case a keyref
is send to a wrong card.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (do_setattr): Add new table item to flush a
different tag.
--
For whatever reasons the OpenPGP card reads the 3 CA fingerprints from
one object but sets them individually using 3 different tags. The
cache flushing was not prepared for this and so a changed CA
fingerprint showed only up after a card reset. This patch fixes it.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (do_change_pin): Implement handling
APP_CHANGE_FLAG_CLEAR.
--
It is specified in the specification version 3.1 or later. Some
version 2 cards (including Gnuk) support this feature. Any version 1
card has no support for this feature.
For CHVNO = 1, it clears for both of 81 and 82; That is, user's key
usages for signing and others (decryption and auth).
For CHVNO = 3, it clears for 83, admin key.
For CHVNO = 2, it clears 82; That is, user's key usages
others (decryption and auth).
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
