giomba
/
opensc
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
opensc/src/libopensc/iso7816.c

1404 lines
36 KiB
C
Raw Blame History

/*
* iso7816.c: Functions specified by the ISO 7816 standard
*
* Copyright (C) 2001, 2002 Juha Yrjölä <juha.yrjola@iki.fi>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "internal.h"
#include "asn1.h"
#include "iso7816.h"
#include "sm/sm-iso.h"
static void fixup_transceive_length(const struct sc_card *card,
struct sc_apdu *apdu)
{
if (card == NULL || apdu == NULL) {
return;
}
if (apdu->lc > sc_get_max_send_size(card)) {
/* The lower layers will automatically do chaining */
apdu->flags |= SC_APDU_FLAGS_CHAINING;
}
if (apdu->le > sc_get_max_recv_size(card)) {
/* The lower layers will automatically do a GET RESPONSE, if possible.
* All other workarounds must be carried out by the upper layers. */
apdu->le = sc_get_max_recv_size(card);
}
}
static const struct sc_card_error iso7816_errors[] = {
{ 0x6200, SC_ERROR_CARD_CMD_FAILED, "Warning: no information given, non-volatile memory is unchanged" },
{ 0x6281, SC_ERROR_CORRUPTED_DATA, "Part of returned data may be corrupted" },
{ 0x6282, SC_ERROR_FILE_END_REACHED, "End of file/record reached before reading Le bytes" },
{ 0x6283, SC_ERROR_CARD_CMD_FAILED, "Selected file invalidated" },
{ 0x6284, SC_ERROR_CARD_CMD_FAILED, "FCI not formatted according to ISO 7816-4" },
{ 0x6300, SC_ERROR_CARD_CMD_FAILED, "Warning: no information given, non-volatile memory has changed" },
{ 0x6381, SC_ERROR_CARD_CMD_FAILED, "Warning: file filled up by last write" },
{ 0x6581, SC_ERROR_MEMORY_FAILURE, "Memory failure" },
{ 0x6700, SC_ERROR_WRONG_LENGTH, "Wrong length" },
{ 0x6800, SC_ERROR_NO_CARD_SUPPORT, "Functions in CLA not supported" },
{ 0x6881, SC_ERROR_NO_CARD_SUPPORT, "Logical channel not supported" },
{ 0x6882, SC_ERROR_NO_CARD_SUPPORT, "Secure messaging not supported" },
{ 0x6900, SC_ERROR_NOT_ALLOWED, "Command not allowed" },
{ 0x6981, SC_ERROR_CARD_CMD_FAILED, "Command incompatible with file structure" },
{ 0x6982, SC_ERROR_SECURITY_STATUS_NOT_SATISFIED, "Security status not satisfied" },
{ 0x6983, SC_ERROR_AUTH_METHOD_BLOCKED, "Authentication method blocked" },
{ 0x6984, SC_ERROR_REF_DATA_NOT_USABLE, "Referenced data not usable" },
{ 0x6985, SC_ERROR_NOT_ALLOWED, "Conditions of use not satisfied" },
{ 0x6986, SC_ERROR_NOT_ALLOWED, "Command not allowed (no current EF)" },
{ 0x6987, SC_ERROR_INCORRECT_PARAMETERS,"Expected SM data objects missing" },
{ 0x6988, SC_ERROR_INCORRECT_PARAMETERS,"SM data objects incorrect" },
{ 0x6A00, SC_ERROR_INCORRECT_PARAMETERS,"Wrong parameter(s) P1-P2" },
{ 0x6A80, SC_ERROR_INCORRECT_PARAMETERS,"Incorrect parameters in the data field" },
{ 0x6A81, SC_ERROR_NO_CARD_SUPPORT, "Function not supported" },
{ 0x6A82, SC_ERROR_FILE_NOT_FOUND, "File not found" },
{ 0x6A83, SC_ERROR_RECORD_NOT_FOUND, "Record not found" },
{ 0x6A84, SC_ERROR_NOT_ENOUGH_MEMORY, "Not enough memory space in the file" },
{ 0x6A85, SC_ERROR_INCORRECT_PARAMETERS,"Lc inconsistent with TLV structure" },
{ 0x6A86, SC_ERROR_INCORRECT_PARAMETERS,"Incorrect parameters P1-P2" },
{ 0x6A87, SC_ERROR_INCORRECT_PARAMETERS,"Lc inconsistent with P1-P2" },
{ 0x6A88, SC_ERROR_DATA_OBJECT_NOT_FOUND,"Referenced data not found" },
{ 0x6A89, SC_ERROR_FILE_ALREADY_EXISTS, "File already exists"},
{ 0x6A8A, SC_ERROR_FILE_ALREADY_EXISTS, "DF name already exists"},
{ 0x6B00, SC_ERROR_INCORRECT_PARAMETERS,"Wrong parameter(s) P1-P2" },
{ 0x6D00, SC_ERROR_INS_NOT_SUPPORTED, "Instruction code not supported or invalid" },
{ 0x6E00, SC_ERROR_CLASS_NOT_SUPPORTED, "Class not supported" },
{ 0x6F00, SC_ERROR_CARD_CMD_FAILED, "No precise diagnosis" },
};
static int
iso7816_check_sw(struct sc_card *card, unsigned int sw1, unsigned int sw2)
{
const int err_count = sizeof(iso7816_errors)/sizeof(iso7816_errors[0]);
int i;
/* Handle special cases here */
if (sw1 == 0x6C) {
sc_log(card->ctx, "Wrong length; correct length is %d", sw2);
return SC_ERROR_WRONG_LENGTH;
}
if (sw1 == 0x90)
return SC_SUCCESS;
if (sw1 == 0x63U && (sw2 & ~0x0fU) == 0xc0U ) {
sc_log(card->ctx, "Verification failed (remaining tries: %d)", (sw2 & 0x0f));
return SC_ERROR_PIN_CODE_INCORRECT;
}
for (i = 0; i < err_count; i++) {
if (iso7816_errors[i].SWs == ((sw1 << 8) | sw2)) {
sc_log(card->ctx, "%s", iso7816_errors[i].errorstr);
return iso7816_errors[i].errorno;
}
}
sc_log(card->ctx, "Unknown SWs; SW1=%02X, SW2=%02X", sw1, sw2);
return SC_ERROR_CARD_CMD_FAILED;
}
static int
iso7816_read_binary(struct sc_card *card, unsigned int idx, u8 *buf, size_t count, unsigned long flags)
{
struct sc_context *ctx = card->ctx;
struct sc_apdu apdu;
int r;
if (idx > 0x7fff) {
sc_log(ctx, "invalid EF offset: 0x%X > 0x7FFF", idx);
return SC_ERROR_OFFSET_TOO_LARGE;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xB0, (idx >> 8) & 0x7F, idx & 0xFF);
apdu.le = count;
apdu.resplen = count;
apdu.resp = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(ctx, r, "APDU transmit failed");
if (apdu.resplen == 0)
LOG_FUNC_RETURN(ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r == SC_ERROR_FILE_END_REACHED)
LOG_FUNC_RETURN(ctx, apdu.resplen);
LOG_TEST_RET(ctx, r, "Check SW error");
if (apdu.resplen < count) {
r = iso7816_read_binary(card, idx + apdu.resplen, buf + apdu.resplen, count - apdu.resplen, flags);
/* Ignore all but 'corrupted data' errors */
if (r == SC_ERROR_CORRUPTED_DATA)
LOG_FUNC_RETURN(ctx, SC_ERROR_CORRUPTED_DATA);
else if (r > 0)
apdu.resplen += r;
}
LOG_FUNC_RETURN(ctx, apdu.resplen);
}
static int
iso7816_read_record(struct sc_card *card,
unsigned int rec_nr, u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xB2, rec_nr, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04;
apdu.le = count;
apdu.resplen = count;
apdu.resp = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.resplen == 0)
LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
LOG_FUNC_RETURN(card->ctx, apdu.resplen);
}
static int
iso7816_write_record(struct sc_card *card, unsigned int rec_nr,
const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD2, rec_nr, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04;
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, count);
}
static int
iso7816_append_record(struct sc_card *card,
const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xE2, 0, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, count);
}
static int
iso7816_update_record(struct sc_card *card, unsigned int rec_nr,
const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xDC, rec_nr, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04;
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, count);
}
static int
iso7816_write_binary(struct sc_card *card,
unsigned int idx, const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
if (idx > 0x7fff) {
sc_log(card->ctx, "invalid EF offset: 0x%X > 0x7FFF", idx);
return SC_ERROR_OFFSET_TOO_LARGE;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD0,
(idx >> 8) & 0x7F, idx & 0xFF);
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, count);
}
static int
iso7816_update_binary(struct sc_card *card,
unsigned int idx, const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
if (idx > 0x7fff) {
sc_log(card->ctx, "invalid EF offset: 0x%X > 0x7FFF", idx);
return SC_ERROR_OFFSET_TOO_LARGE;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD6, (idx >> 8) & 0x7F, idx & 0xFF);
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, count);
}
static int
iso7816_process_fci(struct sc_card *card, struct sc_file *file,
const unsigned char *buf, size_t buflen)
{
struct sc_context *ctx = card->ctx;
size_t taglen, len = buflen;
int i;
const unsigned char *tag = NULL, *p = buf;
sc_log(ctx, "processing FCI bytes");
tag = sc_asn1_find_tag(ctx, p, len, 0x83, &taglen);
if (tag != NULL && taglen == 2) {
file->id = (tag[0] << 8) | tag[1];
sc_log(ctx, " file identifier: 0x%02X%02X", tag[0], tag[1]);
}
/* determine the file size */
/* try the tag 0x80 then the tag 0x81 */
file->size = 0;
for (i = 0x80; i <= 0x81; i++) {
int size = 0;
len = buflen;
tag = sc_asn1_find_tag(ctx, p, len, i, &taglen);
if (tag == NULL)
continue;
if (taglen == 0)
continue;
if (sc_asn1_decode_integer(tag, taglen, &size) < 0)
continue;
if (size <0)
continue;
file->size = size;
sc_log(ctx, " bytes in file: %"SC_FORMAT_LEN_SIZE_T"u",
file->size);
break;
}
tag = sc_asn1_find_tag(ctx, p, len, 0x82, &taglen);
if (tag != NULL) {
if (taglen > 0) {
unsigned char byte = tag[0];
const char *type;
file->shareable = byte & 0x40 ? 1 : 0;
sc_log(ctx, " shareable: %s", (byte & 0x40) ? "yes" : "no");
file->ef_structure = byte & 0x07;
switch ((byte >> 3) & 7) {
case 0:
type = "working EF";
file->type = SC_FILE_TYPE_WORKING_EF;
break;
case 1:
type = "internal EF";
file->type = SC_FILE_TYPE_INTERNAL_EF;
break;
case 7:
type = "DF";
file->type = SC_FILE_TYPE_DF;
break;
default:
type = "unknown";
break;
}
sc_log(ctx, " type: %s", type);
sc_log(ctx, " EF structure: %d", byte & 0x07);
sc_log(ctx, " tag 0x82: 0x%02x", byte);
if (SC_SUCCESS != sc_file_set_type_attr(file, &byte, 1))
sc_log(ctx, "Warning: Could not set file attributes");
}
}
tag = sc_asn1_find_tag(ctx, p, len, 0x84, &taglen);
if (tag != NULL && taglen > 0 && taglen <= 16) {
char tbuf[128];
memcpy(file->name, tag, taglen);
file->namelen = taglen;
sc_hex_dump(ctx, SC_LOG_DEBUG_NORMAL, file->name, file->namelen, tbuf, sizeof(tbuf));
sc_log(ctx, " File name: %s", tbuf);
if (!file->type)
file->type = SC_FILE_TYPE_DF;
}
tag = sc_asn1_find_tag(ctx, p, len, 0x85, &taglen);
if (tag != NULL && taglen)
sc_file_set_prop_attr(file, tag, taglen);
else
file->prop_attr_len = 0;
tag = sc_asn1_find_tag(ctx, p, len, 0xA5, &taglen);
if (tag != NULL && taglen)
sc_file_set_prop_attr(file, tag, taglen);
tag = sc_asn1_find_tag(ctx, p, len, 0x86, &taglen);
if (tag != NULL && taglen)
sc_file_set_sec_attr(file, tag, taglen);
tag = sc_asn1_find_tag(ctx, p, len, 0x88, &taglen);
if (tag != NULL && taglen == 1)
file->sid = *tag;
tag = sc_asn1_find_tag(ctx, p, len, 0x8A, &taglen);
if (tag != NULL && taglen==1) {
if (tag[0] == 0x01)
file->status = SC_FILE_STATUS_CREATION;
else if (tag[0] == 0x07 || tag[0] == 0x05)
file->status = SC_FILE_STATUS_ACTIVATED;
else if (tag[0] == 0x06 || tag[0] == 0x04)
file->status = SC_FILE_STATUS_INVALIDATED;
}
file->magic = SC_FILE_MAGIC;
return SC_SUCCESS;
}
static int
iso7816_select_file(struct sc_card *card, const struct sc_path *in_path, struct sc_file **file_out)
{
struct sc_context *ctx;
struct sc_apdu apdu;
unsigned char buf[SC_MAX_APDU_BUFFER_SIZE];
unsigned char pathbuf[SC_MAX_PATH_SIZE], *path = pathbuf;
int r, pathlen, pathtype;
int select_mf = 0;
struct sc_file *file = NULL;
const u8 *buffer;
size_t buffer_len;
unsigned int cla, tag;
if (card == NULL || in_path == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
ctx = card->ctx;
memcpy(path, in_path->value, in_path->len);
pathlen = in_path->len;
pathtype = in_path->type;
if (in_path->aid.len) {
if (!pathlen) {
memcpy(path, in_path->aid.value, in_path->aid.len);
pathlen = in_path->aid.len;
pathtype = SC_PATH_TYPE_DF_NAME;
} else {
/* First, select the application */
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xA4, 4, 0);
apdu.data = in_path->aid.value;
apdu.datalen = in_path->aid.len;
apdu.lc = in_path->aid.len;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r)
LOG_FUNC_RETURN(ctx, r);
if (pathtype == SC_PATH_TYPE_PATH
|| pathtype == SC_PATH_TYPE_DF_NAME)
pathtype = SC_PATH_TYPE_FROM_CURRENT;
}
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_4_SHORT, 0xA4, 0, 0);
switch (pathtype) {
case SC_PATH_TYPE_FILE_ID:
apdu.p1 = 0;
if (pathlen != 2)
return SC_ERROR_INVALID_ARGUMENTS;
break;
case SC_PATH_TYPE_DF_NAME:
apdu.p1 = 4;
break;
case SC_PATH_TYPE_PATH:
apdu.p1 = 8;
if (pathlen >= 2 && memcmp(path, "\x3F\x00", 2) == 0) {
if (pathlen == 2) { /* only 3F00 supplied */
select_mf = 1;
apdu.p1 = 0;
break;
}
path += 2;
pathlen -= 2;
}
break;
case SC_PATH_TYPE_FROM_CURRENT:
apdu.p1 = 9;
break;
case SC_PATH_TYPE_PARENT:
apdu.p1 = 3;
pathlen = 0;
apdu.cse = SC_APDU_CASE_2_SHORT;
break;
default:
LOG_FUNC_RETURN(ctx, SC_ERROR_INVALID_ARGUMENTS);
}
apdu.lc = pathlen;
apdu.data = path;
apdu.datalen = pathlen;
if (file_out != NULL) {
apdu.p2 = 0; /* first record, return FCI */
apdu.resp = buf;
apdu.resplen = sizeof(buf);
apdu.le = sc_get_max_recv_size(card) < 256 ? sc_get_max_recv_size(card) : 256;
}
else {
apdu.p2 = 0x0C; /* first record, return nothing */
apdu.cse = (apdu.lc == 0) ? SC_APDU_CASE_1 : SC_APDU_CASE_3_SHORT;
}
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(ctx, r, "APDU transmit failed");
if (file_out == NULL) {
/* For some cards 'SELECT' can be only with request to return FCI/FCP. */
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (apdu.sw1 == 0x6A && apdu.sw2 == 0x86) {
apdu.p2 = 0x00;
if (sc_transmit_apdu(card, &apdu) == SC_SUCCESS)
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
}
if (apdu.sw1 == 0x61)
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
LOG_FUNC_RETURN(ctx, r);
}
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r)
LOG_FUNC_RETURN(ctx, r);
if (file_out && (apdu.resplen == 0)) {
/* For some cards 'SELECT' MF or DF_NAME do not return FCI. */
if (select_mf || pathtype == SC_PATH_TYPE_DF_NAME) {
file = sc_file_new();
if (file == NULL)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
file->path = *in_path;
*file_out = file;
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}
}
if (apdu.resplen < 2)
LOG_FUNC_RETURN(ctx, SC_ERROR_UNKNOWN_DATA_RECEIVED);
switch (apdu.resp[0]) {
case ISO7816_TAG_FCI:
case ISO7816_TAG_FCP:
file = sc_file_new();
if (file == NULL)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
file->path = *in_path;
if (card->ops->process_fci == NULL) {
sc_file_free(file);
LOG_FUNC_RETURN(ctx, SC_ERROR_NOT_SUPPORTED);
}
buffer = apdu.resp;
r = sc_asn1_read_tag(&buffer, apdu.resplen, &cla, &tag, &buffer_len);
if (r == SC_SUCCESS)
card->ops->process_fci(card, file, buffer, buffer_len);
*file_out = file;
break;
case 0x00: /* proprietary coding */
LOG_FUNC_RETURN(ctx, SC_ERROR_UNKNOWN_DATA_RECEIVED);
default:
LOG_FUNC_RETURN(ctx, SC_ERROR_UNKNOWN_DATA_RECEIVED);
}
return SC_SUCCESS;
}
static int
iso7816_get_challenge(struct sc_card *card, u8 *rnd, size_t len)
{
int r;
struct sc_apdu apdu;
u8 buf[10];
if (!rnd && len)
return SC_ERROR_INVALID_ARGUMENTS;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0x84, 0x00, 0x00);
apdu.le = 8;
apdu.resp = buf;
apdu.resplen = 8; /* include SW's */
while (len > 0) {
size_t n = len > 8 ? 8 : len;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.resplen != 8)
return sc_check_sw(card, apdu.sw1, apdu.sw2);
memcpy(rnd, apdu.resp, n);
len -= n;
rnd += n;
}
return 0;
}
static int
iso7816_construct_fci(struct sc_card *card, const sc_file_t *file,
u8 *out, size_t *outlen)
{
u8 *p = out;
u8 buf[64];
if (*outlen < 2)
return SC_ERROR_BUFFER_TOO_SMALL;
*p++ = 0x6F;
p++;
buf[0] = (file->size >> 8) & 0xFF;
buf[1] = file->size & 0xFF;
sc_asn1_put_tag(0x81, buf, 2, p, *outlen - (p - out), &p);
if (file->type_attr_len) {
assert(sizeof(buf) >= file->type_attr_len);
memcpy(buf, file->type_attr, file->type_attr_len);
sc_asn1_put_tag(0x82, buf, file->type_attr_len,
p, *outlen - (p - out), &p);
} else {
buf[0] = file->shareable ? 0x40 : 0;
switch (file->type) {
case SC_FILE_TYPE_INTERNAL_EF:
buf[0] |= 0x08;
/* fall through */
case SC_FILE_TYPE_WORKING_EF:
buf[0] |= file->ef_structure & 7;
break;
case SC_FILE_TYPE_DF:
buf[0] |= 0x38;
break;
default:
return SC_ERROR_NOT_SUPPORTED;
}
sc_asn1_put_tag(0x82, buf, 1, p, *outlen - (p - out), &p);
}
buf[0] = (file->id >> 8) & 0xFF;
buf[1] = file->id & 0xFF;
sc_asn1_put_tag(0x83, buf, 2, p, *outlen - (p - out), &p);
/* 0x84 = DF name */
if (file->prop_attr_len) {
assert(sizeof(buf) >= file->prop_attr_len);
memcpy(buf, file->prop_attr, file->prop_attr_len);
sc_asn1_put_tag(0x85, buf, file->prop_attr_len,
p, *outlen - (p - out), &p);
}
if (file->sec_attr_len) {
assert(sizeof(buf) >= file->sec_attr_len);
memcpy(buf, file->sec_attr, file->sec_attr_len);
sc_asn1_put_tag(0x86, buf, file->sec_attr_len,
p, *outlen - (p - out), &p);
}
out[1] = p - out - 2;
*outlen = p - out;
return 0;
}
static int
iso7816_create_file(struct sc_card *card, sc_file_t *file)
{
int r;
size_t len;
u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
struct sc_apdu apdu;
len = SC_MAX_APDU_BUFFER_SIZE;
if (card->ops->construct_fci == NULL)
LOG_FUNC_RETURN(card->ctx, SC_ERROR_NOT_SUPPORTED);
r = card->ops->construct_fci(card, file, sbuf, &len);
LOG_TEST_RET(card->ctx, r, "construct_fci() failed");
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xE0, 0x00, 0x00);
apdu.lc = len;
apdu.datalen = len;
apdu.data = sbuf;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
return r;
}
static int
iso7816_get_response(struct sc_card *card, size_t *count, u8 *buf)
{
struct sc_apdu apdu;
int r;
size_t rlen;
/* request at most max_recv_size bytes */
if (*count > sc_get_max_recv_size(card))
rlen = sc_get_max_recv_size(card);
else
rlen = *count;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xC0, 0x00, 0x00);
apdu.le = rlen;
apdu.resplen = rlen;
apdu.resp = buf;
/* don't call GET RESPONSE recursively */
apdu.flags |= SC_APDU_FLAGS_NO_GET_RESP;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.resplen == 0)
LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
*count = apdu.resplen;
if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00)
r = 0; /* no more data to read */
else if (apdu.sw1 == 0x61)
r = apdu.sw2 == 0 ? 256 : apdu.sw2; /* more data to read */
else if (apdu.sw1 == 0x62 && apdu.sw2 == 0x82)
r = 0; /* Le not reached but file/record ended */
else
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
return r;
}
static int
iso7816_delete_file(struct sc_card *card, const sc_path_t *path)
{
int r;
u8 sbuf[2];
struct sc_apdu apdu;
SC_FUNC_CALLED(card->ctx, SC_LOG_DEBUG_VERBOSE);
if (path->type != SC_PATH_TYPE_FILE_ID || (path->len != 0 && path->len != 2)) {
sc_log(card->ctx, "File type has to be SC_PATH_TYPE_FILE_ID");
SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_NORMAL, SC_ERROR_INVALID_ARGUMENTS);
}
if (path->len == 2) {
sbuf[0] = path->value[0];
sbuf[1] = path->value[1];
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xE4, 0x00, 0x00);
apdu.lc = 2;
apdu.datalen = 2;
apdu.data = sbuf;
}
else {
/* No file ID given: means currently selected file */
sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0xE4, 0x00, 0x00);
}
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
return r;
}
static int
iso7816_set_security_env(struct sc_card *card,
const struct sc_security_env *env, int se_num)
{
struct sc_apdu apdu;
u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
u8 *p;
int r, locked = 0;
if (card == NULL || env == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x22, 0x41, 0);
switch (env->operation) {
case SC_SEC_OPERATION_DECIPHER:
apdu.p2 = 0xB8;
break;
case SC_SEC_OPERATION_SIGN:
apdu.p2 = 0xB6;
break;
default:
return SC_ERROR_INVALID_ARGUMENTS;
}
p = sbuf;
if (env->flags & SC_SEC_ENV_ALG_REF_PRESENT) {
*p++ = 0x80; /* algorithm reference */
*p++ = 0x01;
*p++ = env->algorithm_ref & 0xFF;
}
if (env->flags & SC_SEC_ENV_FILE_REF_PRESENT) {
*p++ = 0x81;
*p++ = env->file_ref.len;
assert(sizeof(sbuf) - (p - sbuf) >= env->file_ref.len);
memcpy(p, env->file_ref.value, env->file_ref.len);
p += env->file_ref.len;
}
if (env->flags & SC_SEC_ENV_KEY_REF_PRESENT) {
if (env->flags & SC_SEC_ENV_KEY_REF_ASYMMETRIC)
*p++ = 0x83;
else
*p++ = 0x84;
*p++ = env->key_ref_len;
assert(sizeof(sbuf) - (p - sbuf) >= env->key_ref_len);
memcpy(p, env->key_ref, env->key_ref_len);
p += env->key_ref_len;
}
r = p - sbuf;
apdu.lc = r;
apdu.datalen = r;
apdu.data = sbuf;
if (se_num > 0) {
r = sc_lock(card);
LOG_TEST_RET(card->ctx, r, "sc_lock() failed");
locked = 1;
}
if (apdu.datalen != 0) {
r = sc_transmit_apdu(card, &apdu);
if (r) {
sc_log(card->ctx, "%s: APDU transmit failed", sc_strerror(r));
goto err;
}
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r) {
sc_log(card->ctx, "%s: Card returned error", sc_strerror(r));
goto err;
}
}
if (se_num <= 0)
return 0;
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x22, 0xF2, se_num);
r = sc_transmit_apdu(card, &apdu);
sc_unlock(card);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
return sc_check_sw(card, apdu.sw1, apdu.sw2);
err:
if (locked)
sc_unlock(card);
return r;
}
static int
iso7816_restore_security_env(struct sc_card *card, int se_num)
{
struct sc_apdu apdu;
int r;
if (card == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0x22, 0xF3, se_num);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
return r;
}
static int
iso7816_compute_signature(struct sc_card *card,
const u8 * data, size_t datalen,
u8 * out, size_t outlen)
{
int r;
struct sc_apdu apdu;
if (card == NULL || data == NULL || out == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
LOG_FUNC_CALLED(card->ctx);
sc_log(card->ctx,
"ISO7816 compute signature: in-len %"SC_FORMAT_LEN_SIZE_T"u, out-len %"SC_FORMAT_LEN_SIZE_T"u",
datalen, outlen);
/* INS: 0x2A PERFORM SECURITY OPERATION
* P1: 0x9E Resp: Digital Signature
* P2: 0x9A Cmd: Input for Digital Signature */
sc_format_apdu(card, &apdu, SC_APDU_CASE_4, 0x2A, 0x9E, 0x9A);
apdu.resp = out;
apdu.resplen = outlen;
apdu.le = outlen;
apdu.data = data;
apdu.lc = datalen;
apdu.datalen = datalen;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00)
LOG_FUNC_RETURN(card->ctx, apdu.resplen);
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, r);
}
static int
iso7816_decipher(struct sc_card *card,
const u8 * crgram, size_t crgram_len,
u8 * out, size_t outlen)
{
int r;
struct sc_apdu apdu;
u8 *sbuf = NULL;
if (card == NULL || crgram == NULL || out == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
LOG_FUNC_CALLED(card->ctx);
sc_log(card->ctx,
"ISO7816 decipher: in-len %"SC_FORMAT_LEN_SIZE_T"u, out-len %"SC_FORMAT_LEN_SIZE_T"u",
crgram_len, outlen);
sbuf = malloc(crgram_len + 1);
if (sbuf == NULL)
return SC_ERROR_OUT_OF_MEMORY;
/* INS: 0x2A PERFORM SECURITY OPERATION
* P1: 0x80 Resp: Plain value
* P2: 0x86 Cmd: Padding indicator byte followed by cryptogram */
sc_format_apdu(card, &apdu, SC_APDU_CASE_4, 0x2A, 0x80, 0x86);
apdu.resp = out;
apdu.resplen = outlen;
apdu.le = outlen;
sbuf[0] = 0; /* padding indicator byte, 0x00 = No further indication */
memcpy(sbuf + 1, crgram, crgram_len);
apdu.data = sbuf;
apdu.lc = crgram_len + 1;
apdu.datalen = crgram_len + 1;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
sc_mem_clear(sbuf, crgram_len + 1);
free(sbuf);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00)
LOG_FUNC_RETURN(card->ctx, apdu.resplen);
else
LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
}
static int
iso7816_build_pin_apdu(struct sc_card *card, struct sc_apdu *apdu,
struct sc_pin_cmd_data *data, u8 *buf, size_t buf_len)
{
int r, len = 0, pad = 0, use_pin_pad = 0, ins, p1 = 0;
int cse = SC_APDU_CASE_3_SHORT;
switch (data->pin_type) {
case SC_AC_CHV:
/* fall through */
case SC_AC_SESSION:
break;
default:
return SC_ERROR_INVALID_ARGUMENTS;
}
if (data->flags & SC_PIN_CMD_NEED_PADDING)
pad = 1;
if (data->flags & SC_PIN_CMD_USE_PINPAD)
use_pin_pad = 1;
data->pin1.offset = 5;
switch (data->cmd) {
case SC_PIN_CMD_VERIFY:
ins = 0x20;
if ((r = sc_build_pin(buf, buf_len, &data->pin1, pad)) < 0)
return r;
len = r;
break;
case SC_PIN_CMD_CHANGE:
ins = 0x24;
if (data->pin1.len != 0 || (use_pin_pad && !( data->flags & SC_PIN_CMD_IMPLICIT_CHANGE))) {
if ((r = sc_build_pin(buf, buf_len, &data->pin1, pad)) < 0)
return r;
len += r;
}
else {
/* implicit test */
p1 = 1;
}
data->pin2.offset = data->pin1.offset + len;
if ((r = sc_build_pin(buf+len, buf_len-len, &data->pin2, pad)) < 0)
return r;
/* Special case - where provided the old PIN on the command line
* but expect the new one to be entered on the keypad.
*/
if (data->pin1.len && data->pin2.len == 0) {
sc_log(card->ctx, "Special case - initial pin provided - but new pin asked on keypad");
data->flags |= SC_PIN_CMD_IMPLICIT_CHANGE;
};
len += r;
break;
case SC_PIN_CMD_UNBLOCK:
ins = 0x2C;
if (data->pin1.len != 0 || (use_pin_pad && !( data->flags & SC_PIN_CMD_IMPLICIT_CHANGE))) {
if ((r = sc_build_pin(buf, buf_len, &data->pin1, pad)) < 0)
return r;
len += r;
} else {
p1 |= 0x02;
}
if (data->pin2.len != 0 || use_pin_pad) {
data->pin2.offset = data->pin1.offset + len;
if ((r = sc_build_pin(buf+len, buf_len-len, &data->pin2, pad)) < 0)
return r;
len += r;
} else {
p1 |= 0x01;
}
break;
case SC_PIN_CMD_GET_INFO:
ins = 0x20;
/* No data to send or to receive */
cse = SC_APDU_CASE_1;
break;
default:
return SC_ERROR_NOT_SUPPORTED;
}
sc_format_apdu(card, apdu, cse, ins, p1, data->pin_reference);
apdu->lc = len;
apdu->datalen = len;
apdu->data = buf;
apdu->resplen = 0;
return 0;
}
static int
iso7816_pin_cmd(struct sc_card *card, struct sc_pin_cmd_data *data, int *tries_left)
{
struct sc_apdu local_apdu, *apdu;
int r;
u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
data->pin1.tries_left = -1;
if (tries_left != NULL) {
*tries_left = data->pin1.tries_left;
}
/* Many cards do support PIN status queries, but some cards don't and
* mistakenly count the command as a failed PIN attempt, so for now we
* whitelist cards with this flag. In future this may be reduced to a
* blacklist, subject to testing more cards. */
if (data->cmd == SC_PIN_CMD_GET_INFO &&
!(card->caps & SC_CARD_CAP_ISO7816_PIN_INFO)) {
sc_log(card->ctx, "Card does not support PIN status queries");
return SC_ERROR_NOT_SUPPORTED;
}
/* See if we've been called from another card driver, which is
* passing an APDU to us (this allows to write card drivers
* whose PIN functions behave "mostly like ISO" except in some
* special circumstances.
*/
if (data->apdu == NULL) {
r = iso7816_build_pin_apdu(card, &local_apdu, data, sbuf, sizeof(sbuf));
if (r < 0)
return r;
data->apdu = &local_apdu;
}
apdu = data->apdu;
if (!(data->flags & SC_PIN_CMD_USE_PINPAD) || data->cmd == SC_PIN_CMD_GET_INFO) {
/* Transmit the APDU to the card */
r = sc_transmit_apdu(card, apdu);
/* Clear the buffer - it may contain pins */
sc_mem_clear(sbuf, sizeof(sbuf));
}
else {
/* Call the reader driver to collect
* the PIN and pass on the APDU to the card */
if (data->pin1.offset == 0) {
sc_log(card->ctx, "Card driver didn't set PIN offset");
return SC_ERROR_INVALID_ARGUMENTS;
}
if (card->reader && card->reader->ops && card->reader->ops->perform_verify) {
r = card->reader->ops->perform_verify(card->reader, data);
/* sw1/sw2 filled in by reader driver */
}
else {
sc_log(card->ctx, "Card reader driver does not support "
"PIN entry through reader key pad");
r = SC_ERROR_NOT_SUPPORTED;
}
}
/* Don't pass references to local variables up to the caller. */
if (data->apdu == &local_apdu)
data->apdu = NULL;
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu->sw1, apdu->sw2);
if (r == SC_SUCCESS) {
data->pin1.logged_in = SC_PIN_STATE_LOGGED_IN;
} else if (r == SC_ERROR_PIN_CODE_INCORRECT) {
data->pin1.tries_left = apdu->sw2 & 0xF;
data->pin1.logged_in = SC_PIN_STATE_LOGGED_OUT;
if (data->cmd == SC_PIN_CMD_GET_INFO)
r = SC_SUCCESS;
} else if (r == SC_ERROR_AUTH_METHOD_BLOCKED) {
data->pin1.tries_left = 0;
data->pin1.logged_in = SC_PIN_STATE_LOGGED_OUT;
if (data->cmd == SC_PIN_CMD_GET_INFO)
r = SC_SUCCESS;
}
if (tries_left != NULL) {
*tries_left = data->pin1.tries_left;
}
return r;
}
static int iso7816_get_data(struct sc_card *card, unsigned int tag, u8 *buf, size_t len)
{
int r, cse;
struct sc_apdu apdu;
SC_FUNC_CALLED(card->ctx, SC_LOG_DEBUG_VERBOSE);
if (buf && len)
cse = SC_APDU_CASE_2;
else
cse = SC_APDU_CASE_1;
sc_format_apdu(card, &apdu, cse, 0xCA, (tag >> 8) & 0xff, tag & 0xff);
apdu.le = len;
apdu.resp = buf;
apdu.resplen = len;
r = sc_transmit_apdu(card, &apdu);
SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, r, "GET_DATA returned error");
if (apdu.resplen > len)
r = SC_ERROR_WRONG_LENGTH;
else
r = apdu.resplen;
SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_NORMAL, r);
}
static int
iso7816_init(struct sc_card *card)
{
#if ENABLE_SM
memset(&card->sm_ctx, 0, sizeof card->sm_ctx);
#endif
return SC_SUCCESS;
}
static int
no_match(struct sc_card *card)
{
return 0;
}
static struct sc_card_operations iso_ops = {
no_match,
iso7816_init, /* init */
NULL, /* finish */
iso7816_read_binary,
iso7816_write_binary,
iso7816_update_binary,
NULL, /* erase_binary */
iso7816_read_record,
iso7816_write_record,
iso7816_append_record,
iso7816_update_record,
iso7816_select_file,
iso7816_get_response,
iso7816_get_challenge,
NULL, /* verify */
NULL, /* logout */
iso7816_restore_security_env,
iso7816_set_security_env,
iso7816_decipher,
iso7816_compute_signature,
NULL, /* change_reference_data */
NULL, /* reset_retry_counter */
iso7816_create_file,
iso7816_delete_file,
NULL, /* list_files */
iso7816_check_sw,
NULL, /* card_ctl */
iso7816_process_fci,
iso7816_construct_fci,
iso7816_pin_cmd,
iso7816_get_data,
NULL, /* put_data */
NULL, /* delete_record */
NULL, /* read_public_key */
NULL /* card_reader_lock_obtained */
};
static struct sc_card_driver iso_driver = {
"ISO 7816 reference driver",
"iso7816",
&iso_ops,
NULL, 0, NULL
};
struct sc_card_driver * sc_get_iso7816_driver(void)
{
return &iso_driver;
}
#define ISO_READ_BINARY 0xB0
#define ISO_P1_FLAG_SFID 0x80
int iso7816_read_binary_sfid(sc_card_t *card, unsigned char sfid,
u8 **ef, size_t *ef_len)
{
int r;
size_t read = MAX_SM_APDU_RESP_SIZE;
sc_apdu_t apdu;
u8 *p;
if (!card || !ef || !ef_len) {
r = SC_ERROR_INVALID_ARGUMENTS;
goto err;
}
*ef_len = 0;
if (read > 0xff+1)
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_EXT,
ISO_READ_BINARY, ISO_P1_FLAG_SFID|sfid, 0);
else
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT,
ISO_READ_BINARY, ISO_P1_FLAG_SFID|sfid, 0);
p = realloc(*ef, read);
if (!p) {
r = SC_ERROR_OUT_OF_MEMORY;
goto err;
}
*ef = p;
apdu.resp = *ef;
apdu.resplen = read;
apdu.le = read;
r = sc_transmit_apdu(card, &apdu);
/* emulate the behaviour of sc_read_binary */
if (r >= 0)
r = apdu.resplen;
while(1) {
if (r >= 0 && ((size_t) r) != read) {
*ef_len += r;
break;
}
if (r < 0) {
sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Could not read EF.");
goto err;
}
*ef_len += r;
p = realloc(*ef, *ef_len + read);
if (!p) {
r = SC_ERROR_OUT_OF_MEMORY;
goto err;
}
*ef = p;
r = sc_read_binary(card, *ef_len,
*ef + *ef_len, read, 0);
}
r = SC_SUCCESS;
err:
return r;
}
#define ISO_WRITE_BINARY 0xD0
int iso7816_write_binary_sfid(sc_card_t *card, unsigned char sfid,
u8 *ef, size_t ef_len)
{
int r;
size_t write = MAX_SM_APDU_DATA_SIZE, wrote = 0;
sc_apdu_t apdu;
#ifdef ENABLE_SM
struct iso_sm_ctx *iso_sm_ctx;
#endif
if (!card) {
r = SC_ERROR_INVALID_ARGUMENTS;
goto err;
}
#ifdef ENABLE_SM
iso_sm_ctx = card->sm_ctx.info.cmd_data;
if (write > SC_MAX_APDU_BUFFER_SIZE-2
|| (card->sm_ctx.sm_mode == SM_MODE_TRANSMIT
&& write > (((SC_MAX_APDU_BUFFER_SIZE-2
/* for encrypted APDUs we usually get authenticated status
* bytes (4B), a MAC (11B) and a cryptogram with padding
* indicator (3B without data). The cryptogram is always
* padded to the block size. */
-18) / iso_sm_ctx->block_length)
* iso_sm_ctx->block_length - 1)))
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_EXT,
ISO_WRITE_BINARY, ISO_P1_FLAG_SFID|sfid, 0);
else
#endif
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT,
ISO_WRITE_BINARY, ISO_P1_FLAG_SFID|sfid, 0);
if (write > ef_len) {
apdu.datalen = ef_len;
apdu.lc = ef_len;
} else {
apdu.datalen = write;
apdu.lc = write;
}
apdu.data = ef;
r = sc_transmit_apdu(card, &apdu);
/* emulate the behaviour of sc_write_binary */
if (r >= 0)
r = apdu.datalen;
while (1) {
if (r < 0 || ((size_t) r) > ef_len) {
sc_debug(card->ctx, SC_LOG_DEBUG_VERBOSE, "Could not write EF.");
goto err;
}
wrote += r;
apdu.data += r;
if (wrote >= ef_len)
break;
r = sc_write_binary(card, wrote, ef, write, 0);
}
r = SC_SUCCESS;
err:
return r;
}
Reference in New Issue View Git Blame Copy Permalink