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scd: Redact --debug cardio output of a VERIFY APDU.

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* scd/apdu.c (pcsc_send_apdu) [DBG_CARD_IO]: Detect and redact a
VERIFY.
(send_apdu_ccid): Ditto.
--

This should handle the most common case.
GnuPG-bug-id: 5085
This commit is contained in:
Werner Koch 2022-11-17 14:22:04 +01:00
parent 18a3ce1c9b
commit 9f7ff43672
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
1 changed files with 16 additions and 2 deletions
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18
scd/apdu.c
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@ -773,7 +773,14 @@ pcsc_send_apdu (int slot, unsigned char *apdu, size_t apdulen,
return err;
if (DBG_CARD_IO)
log_printhex (apdu, apdulen, " PCSC_data:");
{
/* Do not dump the PIN in a VERIFY command. */
if (apdulen > 5 && apdu[1] == 0x20)
log_debug ("PCSC_data: %02X %02X %02X %02X %02X [redacted]\n",
apdu[0], apdu[1], apdu[2], apdu[3], apdu[4]);
else
log_printhex (apdu, apdulen, "PCSC_data:");
}
if ((reader_table[slot].pcsc.protocol & PCSC_PROTOCOL_T1))
send_pci.protocol = PCSC_PROTOCOL_T1;
@ -1555,7 +1562,14 @@ send_apdu_ccid (int slot, unsigned char *apdu, size_t apdulen,
return err;
if (DBG_CARD_IO)
log_printhex (apdu, apdulen, " raw apdu:");
{
/* Do not dump the PIN in a VERIFY command. */
if (apdulen > 5 && apdu[1] == 0x20)
log_debug (" raw apdu: %02x%02x%02x%02x%02x [redacted]\n",
apdu[0], apdu[1], apdu[2], apdu[3], apdu[4]);
else
log_printhex (apdu, apdulen, " raw apdu:");
}
maxbuflen = *buflen;
if (pininfo)