51 lines
1.7 KiB
Diff
51 lines
1.7 KiB
Diff
From 3ff1f7234abb4c42273adedbe06d9e7f9f3a5f9d Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Nguy=E1=BB=85n=20H=E1=BB=93ng=20Qu=C3=A2n?=
|
|
<ng.hong.quan@gmail.com>
|
|
Date: Thu, 11 Apr 2013 16:18:31 +0700
|
|
Subject: [PATCH 14/26] OpenPGP: Overcome the restriction of even data length
|
|
of Gnuk.
|
|
|
|
When write certificate with odd length to Gnuk, we add zero padding to make it even.
|
|
---
|
|
src/libopensc/card-openpgp.c | 20 ++++++++++++++++++--
|
|
1 file changed, 18 insertions(+), 2 deletions(-)
|
|
|
|
Index: opensc-20150513/src/libopensc/card-openpgp.c
|
|
===================================================================
|
|
--- opensc-20150513.orig/src/libopensc/card-openpgp.c
|
|
+++ opensc-20150513/src/libopensc/card-openpgp.c
|
|
@@ -1216,6 +1216,10 @@ static int gnuk_write_certificate(sc_car
|
|
sc_apdu_t apdu;
|
|
u8 *part;
|
|
size_t plen;
|
|
+ /* Two round_ variables below are to build APDU data
|
|
+ * with even length for Gnuk */
|
|
+ u8 roundbuf[256];
|
|
+ size_t roundlen = 0;
|
|
int r = SC_SUCCESS;
|
|
|
|
LOG_FUNC_CALLED(ctx);
|
|
@@ -1246,8 +1250,20 @@ static int gnuk_write_certificate(sc_car
|
|
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xD6, i, 0);
|
|
}
|
|
apdu.flags |= SC_APDU_FLAGS_CHAINING;
|
|
- apdu.data = part;
|
|
- apdu.datalen = apdu.lc = plen;
|
|
+
|
|
+ /* If the last part has odd length, we add zero padding to make it even.
|
|
+ * Gnuk does not allow data with odd length */
|
|
+ if (plen < 256 && (plen % 2) != 0) {
|
|
+ roundlen = plen + 1;
|
|
+ memset(roundbuf, 0, roundlen);
|
|
+ memcpy(roundbuf, part, plen);
|
|
+ apdu.data = roundbuf;
|
|
+ apdu.datalen = apdu.lc = roundlen;
|
|
+ }
|
|
+ else {
|
|
+ apdu.data = part;
|
|
+ apdu.datalen = apdu.lc = plen;
|
|
+ }
|
|
|
|
r = sc_transmit_apdu(card, &apdu);
|
|
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
|