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scd: Support clearing of Reset Code by ''.

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* scd/app-openpgp.c (do_change_pin): Allow null-string.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2021-06-11 13:42:01 +09:00
parent 63427a0e4e
commit 4e02db75e3
1 changed files with 3 additions and 2 deletions
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5
scd/app-openpgp.c
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@ -3477,7 +3477,9 @@ do_change_pin (app_t app, ctrl_t ctrl, const char *chvnostr,
}
else if (set_resetcode)
{
if (strlen (pinvalue) < 8)
size_t bufferlen = strlen (pinvalue);
if (bufferlen != 0 && bufferlen < 8)
{
log_error (_("Reset Code is too short; minimum length is %d\n"), 8);
rc = gpg_error (GPG_ERR_BAD_PIN);
@ -3485,7 +3487,6 @@ do_change_pin (app_t app, ctrl_t ctrl, const char *chvnostr,
else
{
char *buffer = NULL;
size_t bufferlen;
rc = pin2hash_if_kdf (app, 0, pinvalue, &buffer, &bufferlen);
if (!rc)