* scd/command.c (cmd_readkey): Reformat for advanced mode.
--
The --advanced option used to work only if the driver supported that
but not if we extracted the public key from an x.509 certificate.
This patch fixes that.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (app_new_register): Don't lock APP_LIST_LOCK here.
(select_application): Lock with APP_LIST_LOCK earlier.
--
What we want to do here is to serialize the call of
select_application. In the old code, it was possible
that a call of select_application was blocked internally,
and then another call of select_application entered.
We can have a dedicated lock for call of select_application,
but it is easier to re-use APP_LIST_LOCK.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/call-agent.c (learn_status_cb): Parse "bt" flag.
* g10/call-agent.h: New member field "bt".
* g10/card-util.c (uif): Limit its access only when it is supported.
* scd/app-openpgp.c (do_setattr): Allow access to UIF objects only
when there is a button.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (do_sign): Clear DID_CHV1 after signing.
--
We have a corner case: In "not forced" situation and authenticated,
and it is changed to "forced", card implementaiton can actually accept
signing, but GnuPG requires authentication, because it is "forced".
GnuPG-bug-id: 4177
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/card-util.c (gen_kdf_data): Support single salt.
(kdf_setup): Can have argument for single salt.
* scd/app-openpgp.c (pin2hash_if_kdf): Support single salt.
--
Gnuk has "admin-less" mode. To support "admin-less" mode with KDF
feature, salt should be same for user and admin. Thus, I introduce a
valid use of single salt.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (change_rsa_keyattr): Try usual RSA.
--
In the OpenPGP card specification, there are multiple options to
support RSA (having P and Q or not, etc.), and it is implementation
dependent. Since GnuPG doesn't have knowledge which card
implementation support which option and there is no way (yet) for card
to express itself which key attributes are supported, we haven't
supported key attribute change back to RSA. But, many card
implementation uses P and Q, try this option. If other cases,
factory-reset would be easier option.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/scdaemon.c (setup_signal_mask): New.
(main): Call setup_signal_mask.
(handle_connections): Remove signal mask setup.
--
For new thread, signal mask is inherited by thread creation.
Thus, it is best to setup signal mask just after npth_init.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/ccid-driver.c (intr_cb): Try submitting INTERRUPT urb
to see if it's suspend/resume.
--
Upon suspend/resume, LIBUSB_TRANSFER_NO_DEVICE is returned, since all
URBs are cancelled. We need to see if it's real NODEV error or its by
suspend/resume. We can distinguish by sending URB again.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* configure.ac (require_pipe_to_unblock_pselect): Default is "yes".
* scd/scdaemon.c (scd_kick_the_loop): Minor clean up.
--
Normally SIGCONT or SIGUSR2 works for unblocking pselect. But on my
machine with GNU/Linux, when a machine is suspend/resume-ed, pselect
keeps blocked, while signal itself is delivered.
It's better to use pipe.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/apdu.c (struct reader_table_s): Add field of current_state.
(new_reader_slot): Initialize current_state.
(pcsc_get_status): Keep the status in READER_TABLE array.
Return SW_HOST_NO_READER when PCSC_STATE_CHANGED.
* scd/scdaemon.c (handle_connections): Silence a warning.
--
To detect some change of card status, including suspend/resume
possibly, SCardGetStatusChange should be used keeping the
dwCurrentState field.
This change could improve situation for suspend/resume with Yubikey on
Windows. Even not, this is doing the Right Thing.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* common/asshelp2.c (vprint_assuan_status_strings): New.
(print_assuan_status_strings): New.
* agent/command.c (agent_write_status): Replace by call to new
function.
* dirmngr/server.c (dirmngr_status): Ditto.
* g13/server.c (g13_status): Ditto.
* g13/sh-cmd.c (g13_status): Ditto.
* sm/server.c (gpgsm_status2): Ditto.
* scd/command.c (send_status_info): Bump up N.
--
This fixes a potential overflow if LFs are passed to the status
string functions. This is actually not the case and would be wrong
because neither the truncating in libassuan or our escaping is not the
Right Thing. In any case the functions need to be more robust and
comply to the promised interface. Thus the code has been factored out
to a helper function and N has been bumped up correctly and checked in
all cases.
For some uses this changes the behaviour in the error case (i.e. CR or
LF passed): It will now always be C-escaped and not passed to
libassuan which would truncate the line at the first LF.
Reported-by: private_pers
* scd/app-openpgp.c (get_cached_data): Return NULL for Data Object
with no data.
--
When GET_DATA returns no data with success (90 00), this routine
firstly returned buffer with length zero, and secondly (with cache)
returned NULL, which is inconsistent. Now, it returns NULL for both
cases.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* configure.ac (HAVE_PSELECT_NO_EINTR): New.
* scd/scdaemon.c (scd_kick_the_loop): Write to pipe.
(handle_connections): Use pipe.
--
On NetBSD, signal to the same process cannot unblock pselect,
with unknown reason. Use pipe instead, for such systems.
GnuPG-bug-id: 3778
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/ccid-driver.c (do_close_reader): Set NULL on close.
(bulk_in): Move DEBUGOUT and check by EP_INTR.
(ccid_get_atr): Clear powered_off flag after initial status check.
--
Many card readers automatically turn on inserted card, but some
defaults to turning off at start.
GnuPG-bug-id: 3508
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* agent/gpg-agent.c (oListenBacklog): New const.
(opts): New option --listen-backlog.
(listen_backlog): New var.
(main): Parse new options.
(create_server_socket): Use var instead of 5.
* dirmngr/dirmngr.c: Likewise.
* scd/scdaemon.c: Likewise.
--
GnuPG-bug-id: 3473
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/logging.c: Do not build any code if we can use the gpgrt_log
functions.
(log_logv_with_prefix): Rename to log_logv_prefix and change order of
args so that this function matches its printf like counterpart
gpgrt_logv_prefix. Change all callers.
(log_debug_with_string): Rename to log_debug_string. Change all
callers.
(log_printhex): Move first arg to end so that this function matches
its printf like counterpart gpgrt_log_printhex. Change all callers.
* common/logging.h: Divert to gpgrt/libgpg-error if we can use the
gpgrt_log functions.
(bug_at): Add inline versions if we can use the gpgrt_log functions.
* configure.ac (GPGRT_ENABLE_LOG_MACROS): Add to AH_BOTTOM.
(mycflags): Add -Wno-format-zero-length.
--
This patch enables the use of the log function from libgpgrt (aka
libgpg-error). Instead of checking a version number, we enable them
depending on macros set by recent gpg-error versions. Eventually the
whole divert stuff can be removed.
The -Wno-format-zero-length is required because log_printhex can be
called with an empty format string. Note that this is fully specified
standard C behaviour.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/apdu.c (open_ccid_reader): Fix error handling of ccid_get_atr.
* scd/app.c (select_application): Always kick the loop if new APP.
* scd/ccid-driver.c (ccid_open_usb_reader): Don't setup at open.
(ccid_slot_status): Setup interrupt transfer when !ON_WIRE.
--
We can use the interrupt transfer to be notified about card status
change. In this case, we don't need to issue PC_to_RDR_GetSlotStatus
command. This change improve the setup the notification; it should be
done after registration of APP.
When the setup is done just after opening the USB connection (before
issuing PC_to_RDR_IccPowerOn), a reader might notifies about no card
availability (because of not yet powered on), even though the card is
ready to be powered on.
GnuPG-bug-id: 3508
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/card-util.c (current_card_status): String changes.
(change_sex): Description change.
(cmds): Add "salutation"; keep "sex" as an alias.
--
Note that we can't change the used values or tags but at least the UI
should show reflect the real purpose of the field.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-openpgp.c (determine_rsa_response): Round bits up.
--
Co-authored-by: Arnaud Fontaine <arnaud.fontaine@ssi.gouv.fr>
Arnaud wrote:
Actually, when the incorrect expected response length (i.e. Le
field) is transmitted to the card, the card's answer is missing a
byte (i.e. ... 6101) so an additional command has to be sent to the
card to retrieve the last byte. Using the correct length avoids to
send the additional command to retrieve the missing byte, when the
computed length is wrong.
Note that an value of 65537 for E is pretty standard and thus we can
avoid the 6101 return code inmost cases.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/gpg-agent.c (main): Always to the chdir.
* dirmngr/dirmngr.c (main): Ditto.
* scd/scdaemon.c (main): Ditto.
--
Note that only dirmngr did not call the chdir with --no-detach. thus
we kept it this way.
Tested gpg-agent by checking the properties shown by procexp.
Gnupg-bug-id: 2670
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/gpg-agent.c [HAVE_W32_SYSTEM]: Include <direct.h>.
(main) [HAVE_W32_SYSTEM]: Change working directory to \.
* dirmngr/dirmngr.c [HAVE_W32_SYSTEM]: Include <direct.h>.
(main) [HAVE_W32_SYSTEM]: Change working directory to \.
* scd/scdaemon.c [HAVE_W32_SYSTEM]: Include <direct.h>.
(main) [HAVE_W32_SYSTEM]: Change working directory to \.
Signed-off-by: Marcus Brinkmann <mb@g10code.com>
GnuPG-bug-id: 2670
* scd/ccid-driver.c (intr_cb): Only kick the loop for removal.
(bulk_in): Don't set POWERED_OFF when interrupt transfer is enabled.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (data_objects): Special DOs like "Login Data",
"URL", "Private DO N" can be longer size >= 256.
(struct app_local_s): Define bits for v3 card.
(get_cached_data): Use extcap.max_special_do for special DOs.
(app_select_openpgp): Detect if extcap_v3, kdf_do, and other bits.
--
GnuPG-bug-id: 3262
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/ccid-reader.c (scan_usb_device): Only for scan mode, so, rename
from scan_or_find_usb_device.
(scan_devices): Likewise. Remove support of special transport types.
(ccid_get_reader_list): Simplify.
(abort_cmd): Fix error return.
(send_escape_cmd): Fix for RESULTLEN == NULL.
(ccid_transceive_secure): Remove unnecessary var updates.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/ccid-driver.c (CCID_CMD_TIMEOUT): Back to original value.
(CCID_CMD_TIMEOUT_LONGER): New.
(ccid_transceive): Add kludge for key generation.
--
At key generation of longer key size, OpenPGP card sends back "time
extension" with BWI=100, which is unusual value in the protocol and it
actually requires host having longer timeout like 43 seconds.
Reported-by: Szczepan Zalega <szczepan@nitrokey.com>
Fixes-commit: 6510df3a7c
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-dinsig.c (do_sign): Remove assignment to HASHALGO.
* scd/app-p15.c (parse_keyusage_flags): Remove assign to MASK.
(read_ef_aodf): Likewise.
(read_ef_cdf): Change the control to parse_error.
* scd/app-sc-hsm.c (parse_keyusage_flags): Remove assign to MASK.
(read_ef_prkd): Remove assign to S.
(read_ef_prkd): Check if PRKDF is not null.
(read_ef_cd): Likewise for CDF.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/scdaemon.c (notify_fd): Remove.
(the_event) [W32]: New.
(main_thread_pid) [!W32]: New.
(handle_signal): Handle SIGCONT.
(scd_kick_the_loop): Use signal on UNIX and event on Windows.
(handle_connections): Likewise.
--
Code with CreateEvent is copied from gpg-agent.c.
Code for signal is copied from dkg's gpg-agent-idling in Debian.
GnuPG-bug-id: 2982
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-openpgp.c (get_prompt_info): Change texts.
* agent/call-pinentry.c (struct entry_features): New.
(getinfo_features_cb): New.
(start_pinentry): Set new fucntion as status callback.
(build_cmd_setdesc): New. Replace all snprintf for SETDESC by this
one.
--
Suggested-by: Andre Heinecke
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/app-openpgp.c (get_prompt_info): Change wording and order
slightly.
--
The word "Card" was repeated too much in the prompt and moving
signatures to the bottom results in a more consistent layout
between the prompts with signcount and the prompts without.
Signed-off-by: Andre Heinecke <aheinecke@intevation.de>
* scd/app-openpgp.c (get_disp_name): New.
(get_disp_serialno): New.
(get_prompt_info): New.
(build_enter_admin_pin_prompt): Rework the prompt texts. Factor some
code out to ...
(get_remaining_tries): New.
(verify_a_chv): Print a remaining counter also for the standard PIN.
Rework the prompt texts.
* agent/divert-scd.c (ask_for_card): Pretty format an OpenPGP serial
no.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-common.h (struct app_ctx_s): Add reset_requested.
* scd/app.c (app_reset): Locking APP, set reset_requested.
(deallocate_app): Release the lock.
(release_application): Add LOCKED_ALREADY argument.
(scd_update_reader_status_file): Hold the lock when accessing APP.
When reset_requested is set, close the reader and deallocate APP.
* scd/command.c (open_card_with_request, cmd_restart): Follow the
change of release_application.
(send_client_notifications): Here it calls release_application holding
the lock.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app.c (release_application_internal): Remove.
(release_application): Merge release_application_internal.
(app_reset): Kick the loop and let close the reader. Sleep is
required here to wait closing.
(scd_update_reader_status_file): When APP is no use, close it.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/apdu.c (apdu_open_reader): Add an argument APP_EMPTY.
When CCID driver fails to open, try PC/SC if APP is nothing.
* scd/app.c (select_application): Supply arg if APP is nothing.
--
After scanning available card readers by CCID driver, scdaemon should
try PC/SC service if no APP is registered yet. Also, when the slot
is allocated for PC/SC (ccid.handle==NULL), it should not call
ccid_compare_BAI, otherwise scdaemon crashes.
Debian-bug-id: 852702, 854005, 854595, 854616
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/scdaemon.c (get_active_connection_count): New.
(start_connection_thread): Bump ACTIVE_CONNECTIONS up and down.
* scd/command.c (cmd_getinfo): Add subcommand "connections".
--
Apply gpg-agent change to scdaemon. See the commit in 2016-08-06:
40d16029ed
Then, add kicking the loop, so that main loop can notice the change of
the connection.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/scdaemon.c (ticker_disabled): Remove.
(handle_tick, need_tick): Remove.
(handle_connections): Don't check ticker_disabled.
--
Now, removal of device/card is only done by the function
scd_update_reader_status_file, it should be called if needed.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app.c (select_application): Fix the logic if periodical check is
needed. If it is needed for newly found device(s), kick the loop.
(scd_update_reader_status_file): Return value if select(2) should be
called with timeout.
* scd/ccid-driver.c (ccid_require_get_status): Don't return 0 for
token with no interrupt transfer for now.
* scd/command.c (open_card_with_request): Fix scan by SERIALNO.
* scd/scdaemon.c (update_usb): Remove.
(handle_connections): Evaluate need_tick after handle_tick.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/apdu.c (get_status_reader): Add ON_WIRE arg, here.
(ct_get_status, pcsc_get_status_direct, pcsc_get_status_wrapped)
(pcsc_get_status, get_status_ccid, my_rapdu_get_status): Likewise.
(reset_pcsc_reader_wrapped, open_pcsc_reader_wrapped): Follow the
change.
(apdu_get_status_internal): It's lower-level driver which judge
it's not needed. Otherwise, it can't detect the removal.
* scd/ccid-driver.c (ccid_slot_status): After the POWERED_OFF check,
we can skip sending GetSlotStatus packet on wire, when no need.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
Fixes-commit: c8eee4d396a751d41fd1ee1e1b87b851fca172a
* scd/ccid-driver.c (do_close_reader): Don't lock events, but check the
return value of libusb_cancel_transfer.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-common.h (struct app_ctx_s): Rename field to
periodical_check_needed.
* scd/scdaemon.c (update_usb): Rename from update_fdset_for_usb.
Don't use libusb_get_pollfds any more.
(scd_kick_the_loop): New.
(need_tick): Follow the rename.
(handle_connections): No libusb event handling here.
* scd/app.c (app_new_register): Follow the change of rename.
(select_application, scd_update_reader_status_file): Likewise.
* scd/ccid-driver.c (ccid_usb_thread_is_alive): New.
(intr_cb): Call scd_kick_the_loop.
(ccid_usb_thread): New. Thread to invoke INTERRUPT callback.
(ccid_open_usb_reader): Add thread invocation.
(ccid_require_get_status): Remove
LIBUSB_WORKS_EXPECTED_FOR_INTERRUPT_ENDP.
(do_close_reader): Carefully handle handle->transfer.
(get_escaped_usb_string): Insert npth_unprotect/npth_protect.
(do_close_reader, bulk_out, bulk_in, abort_cmd, ccid_slot_status)
(ccid_transceive, ccid_transceive_secure): Likewise.
--
It found that libusb_get_pollfds is not supported on Windows.
Besides, it's a bit difficult to use for the select loop.
Thus, we use the thread named ccid_usb_thread, instead.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/apdu.c(struct reader_table_s): Add require_get_status.
(apdu_connect): Change return value meaning. Call apdu_reset here.
* scd/app.c (app_new_register): Add require_get_status.
(select_application): Use the return value of apdu_connect.
(scd_update_reader_status_file): Call update_fdset_for_usb with
checking all_have_intr_endp.
(app_list_start, app_list_finish): Remove.
* scd/ccid-driver.c (struct ccid_driver_s): Add transfer.
(intr_cb): Don't call libusb_transfer in this callback.
(ccid_require_get_status): New.
(do_close_reader): Call libusb_transfer here.
* scd/scdaemon.c (update_fdset_for_usb): Remove the first argument.
--
With Gnuk Token, it works fine as expected. With Gemalto reader,
intr_cb is not called when card is removed. So, the macro
LIBUSB_WORKS_EXPECTED_FOR_INTERRUPT_ENDP is not defined yet.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/scdaemon.c (update_fdset_for_usb): Wake up the select(2).
(handle_connections): Use a kind of "self-pipe" technique.
--
Use pipe to wake up select(2). If UNIX-only, signal could be used. For
portability, "self-pipe" is better, here. Setup for non-blocking for
pipe fds are not needed, because speed of USB device insertion is
limited by human physical interaction; No one can do hundreds of
device insertion/removal-s per second.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* common/logging.c (do_logv): Remove extra parentheses in comparison.
* dirmngr/dns-stuff.c (resolve_addr_libdns): Init RES so that
dns_res_close is given a defined value in the error case.
* dirmngr/http.c (cookie_read, cookie_write) [HTTP_USE_NTBTLS]: Fix
format string char.
* dirmngr/ks-engine-hkp.c (ks_hkp_help): Remove duplicate "const".
* dirmngr/ks-engine-http.c (ks_http_help): Ditto.
* dirmngr/ks-engine-kdns.c (ks_kdns_help): Ditto.
* dirmngr/ks-engine-ldap.c (ks_ldap_help): Ditto.
* scd/app-p15.c (send_keypairinfo, do_getattr): Fix format string
char.
* tools/gpgconf-comp.c (gpg_agent_runtime_change): Init PID for the
error case.
(scdaemon_runtime_change): Ditto.
(dirmngr_runtime_change): Ditto.
* tools/gpgconf.c (query_swdb): Init VALUE_SIZE_UL.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (app_get_serial_and_stamp): Remove.
(app_get_serialno): New.
(app_write_learn_status): Use send_status_direct.
(app_getattr): Use app_get_serialno for SERIALNO and
send with send_status_direct.
* scd/app-openpgp.c (do_getattr): Likewise.
* scd/command.c (cmd_serialno): Don't send TIMESTAMP of 0.
(cmd_learn): Likewise. Don't inquire with TIMESTAMP of 0.
--
In the SERIALNO protocol, timestamp used to be considered, but had never
used at all. In the new implementation, removed card/token is always
detected and connection becomes invalid, no timestamp is required any
more. Examined scute and poldi as well for this protocol change.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app.c (select_application): Add SERIALNO_BIN and SERIALNO_BIN_LEN
arguments. Return matched APP with a serial number when specified.
* scd/command.c (open_card): Modify for the implicit open only.
(open_card_with_request): New for explicit open and support match with a
serial number.
(cmd_serialno): Support --demand option.
(cmd_learn, cmd_readcert, cmd_readkey, cmd_pksign, cmd_pkauth)
(cmd_pkdecrypt, cmd_getattr, cmd_setattr, cmd_writecert, cmd_writekey)
(cmd_genkey, cmd_random, cmd_passwd, cmd_checkpin, cmd_apdu): Follow
the change of open_card.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/apdu.c (apdu_dev_list_finish): Don't call ccid_dev_scan_finish
with no table.
(apdu_open_reader): Only increment when it's zero.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/apdu.c (new_reader_slot): Lock is now in apdu_dev_list_start.
(close_pcsc_reader_direct, close_ccid_reader): RDRNAME is handled...
(apdu_close_reader): ... by this function now.
(apdu_prepare_exit): Likewise.
(open_ccid_reader): Open with dev_list.
(apdu_dev_list_start, apdu_dev_list_finish): New.
(apdu_open_one_reader): New.
(apdu_open_reader): Support multiple readers.
* scd/app.c (select_application): With SCAN, opening all readers
available, and register as new APP.
(app_write_learn_status): app->ref_count == 0 is valid for APP which is
not yet used.
(app_list_start, app_list_finish): New.
* scd/ccid-driver.c (struct ccid_driver_s): Remove RID and BCD_DEVICE.
Add BAI.
(parse_ccid_descriptor): BCD_DEVICE is now on the arguments.
(ccid_dev_scan, ccid_dev_scan_finish): New.
(ccid_get_BAI, ccid_compare_BAI, ccid_open_usb_reader): New.
(ccid_open_reader): Support multiple readers.
(ccid_set_progress_cb, ccid_close_reader): No RID any more.
--
With this change, multiple readers/tokens are supported by the internal
CCID driver of GnuPG. Until the changes of upper layers (scdaemon,
gpg-agent, and gpg front end), only a single reader is used, though.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
