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scd: Add option --clear to PASSWD.

Browse source 
* scd/command.c (cmd_passwd): Add option --clear.
(send_status_printf): New.
* scd/app-common.h (APP_CHANGE_FLAG_CLEAR): New.
* scd/app-nks.c (do_change_pin): Return an error if that option is
used.
* scd/app-openpgp.c (do_change_pin): Ditto.
--

Card application may support this option to clear the PIN verification
status of a specific PIN.

Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit 29929e6552)
This commit is contained in:
Werner Koch 2019-01-21 14:06:51 +01:00
parent 9309175de8
commit d4082ff430
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
7 changed files with 46 additions and 6 deletions
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4
scd/app-openpgp.c
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@ -2584,10 +2584,14 @@ do_change_pin (app_t app, ctrl_t ctrl, const char *chvnostr,
int pinlen = 0;
(void)ctrl;
memset (&pininfo, 0, sizeof pininfo);
pininfo.fixedlen = -1;
pininfo.minlen = minlen;
if ((flags & APP_CHANGE_FLAG_CLEAR))
return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
if (reset_mode && chvno == 3)
{
rc = gpg_error (GPG_ERR_INV_ID);