may it be similar to the following poblema http://www.natisbad.org/E4300/?
The link propose a patch to remove a sequence of NULL
Quote:
After some debugging at opensc level, it seems that the reader returns (via
openct) some APDU with leading NULL bytes (more precisely, 252 of those NULL
bytes). I wrote a small temporary fix (below) for opensc package but the
problem should probably be corrected at a lower level level.
Index: opensc-0.11.4/src/libopensc/apdu.c
===================================================================
--- opensc-0.11.4.orig/src/libopensc/apdu.c 2008-12-26 09:37:55.000000000
+0100
+++ opensc-0.11.4/src/libopensc/apdu.c 2008-12-26 09:41:36.000000000 +0100
@@ -455,6 +455,25 @@
return SC_ERROR_NOT_SUPPORTED;
}
+#define BROADCOM_E4300_BUG_APDU_DROP 252
+ if (apdu->resplen >= BROADCOM_E4300_BUG_APDU_DROP) {
+ int i, allzero=1;
+ u8 *tmp = apdu->resp;
+
+ for (i=0; i < BROADCOM_E4300_BUG_APDU_DROP;
i++) {
+ if (tmp[i] != 0) {
+ allzero = 0;
+ break;
+ }
+ }
+
+ if (allzero) {
+ memmove(tmp, tmp +
BROADCOM_E4300_BUG_APDU_DROP,
+ apdu->resplen -
BROADCOM_E4300_BUG_APDU_DROP);
+ apdu->resplen -=
BROADCOM_E4300_BUG_APDU_DROP;
+ }
+ }
+
/* if the command already returned some data
* append the new data to the end of the buffer
*/
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https://bugs.launchpad.net/bugs/1596662
Title:
pcscd fails to read CAC card data, errors out
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