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scd:p15: Allow to use an auth object label with cmd CHECKPIN.

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* scd/app-p15.c (prepare_verify_pin): Allow for PRKDF to be NULL.
(make_pin_prompt): Ditto.
(verify_pin): Ditto.
(do_check_pin): Allow using the Label to specify a PIN.
--

Note that a label may not work in all cases because we can't select
the protected object's EF first.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2021-03-18 16:30:10 +01:00
parent 1ac189f2df
commit 85082a83c2
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GPG key ID: E3FDFF218E45B72B
2 changed files with 46 additions and 21 deletions
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6
scd/command.c
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@ -1590,7 +1590,11 @@ static const char hlp_checkpin[] =
" For a definitive list, see the implementation in app-nks.c.\n"
" Note that we call a PW2.* PIN a \"PUK\" despite that since TCOS\n"
" 3.0 they are technically alternative PINs used to mutally\n"
" unblock each other.";
" unblock each other.\n"
"\n"
"For PKCS#15:\n"
"\n"
" The key's ID string or the PIN's label may be used.";
static gpg_error_t
cmd_checkpin (assuan_context_t ctx, char *line)
{