482 lines
15 KiB
C
482 lines
15 KiB
C
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/*
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* card-masktech.c: Support for Masktech smart cards using the MTCOS operating system.
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*
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* Copyright (C) 2011-2015 MaskTech GmbH Fischerstrasse 19, 87435 Kempten, Germany
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* Copyright (C) 2011 Andrey Uvarov (X-Infotech) <andrejs.uvarovs@x-infotech.com>
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* Copyright (C) 2015 Vincent Le Toux (My Smart Logon) <vincent.letoux@mysmartlogon.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include "internal.h"
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#include "cardctl.h"
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#include "iso7816.h"
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static struct sc_atr_table masktech_atrs[] = {
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{"3B:89:80:01:4D:54:43:4F:53:70:02:02:05:3B", NULL, NULL,
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SC_CARD_TYPE_MASKTECH_GENERIC, 0, NULL},
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{"3B:9D:13:81:31:60:37:80:31:C0:69:4D:54:43:4F:53:73:02:02:05:41", NULL, NULL,
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SC_CARD_TYPE_MASKTECH_GENERIC, 0, NULL},
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{NULL, NULL, NULL, 0, 0, NULL}
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};
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static struct sc_card_operations *iso_ops;
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static struct sc_card_operations masktech_ops;
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static struct sc_card_driver masktech_drv = {
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"MaskTech Smart Card",
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"MaskTech",
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&masktech_ops,
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masktech_atrs, 0, NULL
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};
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struct masktech_private_data {
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/* save the key reference set at set_masktech_set_security_env to recover it as the signature step */
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int rsa_key_ref;
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};
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/* function not used - remains just in case the inclusion of the application inside dir.c is denied */
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static int masktech_select_aid(struct sc_card *card)
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{
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struct sc_apdu apdu;
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unsigned char apdu_resp[SC_MAX_APDU_BUFFER_SIZE];
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int rv;
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unsigned char cm[7] = {0xA0,0x00,0x00,0x00,0x03,0x00,0x00};
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unsigned char aid[15] = {0xE8,0x28,0xBD,0x08,0x0F,0xA0,0x00,0x00,0x01,0x67,0x45,0x53,0x49,0x47,0x4E};
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struct sc_path tmp_path;
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/* Select Card Manager (to deselect previously selected application) */
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card->cla = 0x00;
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sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xA4, 0x04, 0x0C);
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apdu.lc = sizeof(cm);
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apdu.data = cm;
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apdu.datalen = sizeof(cm);
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apdu.resplen = sizeof(apdu_resp);
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apdu.resp = apdu_resp;
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rv = sc_transmit_apdu(card, &apdu);
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SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, rv, "APDU transmit failed");
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memset(&tmp_path, 0, sizeof(struct sc_path));
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tmp_path.type = SC_PATH_TYPE_DF_NAME;
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memcpy(tmp_path.value, aid, sizeof(aid));
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tmp_path.len = sizeof(aid);
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rv = iso_ops->select_file(card, &tmp_path, NULL);
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "rv %i\n", rv);
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SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, rv, "select parent failed");
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "return %i\n", rv);
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SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_NORMAL, rv);
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}
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static int masktech_match_card(sc_card_t * card)
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{
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/* check if the ATR is in the known ATR */
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if (_sc_match_atr(card, masktech_atrs, &card->type) < 0)
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return 0;
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/* load the smart card application */
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/* function not used - remains just in case the inclusion of the application inside dir.c is denied */
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/*if (masktech_select_aid(card)) {
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "Failed to select aid\n");
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SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, SC_ERROR_INVALID_CARD, "Failed to select aid");
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}*/
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return 1;
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}
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static int masktech_init(sc_card_t * card)
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{
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unsigned long flags;
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struct masktech_private_data *data;
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "masktech_init()\n");
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/* private data kept during the live of the driver */
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if (!(data = (struct masktech_private_data *) malloc(sizeof(*data))))
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return SC_ERROR_OUT_OF_MEMORY;
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card->drv_data = data;
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/* supported RSA keys and how padding is done */
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flags = SC_ALGORITHM_RSA_PAD_PKCS1 | SC_ALGORITHM_RSA_HASH_NONE;
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_sc_card_add_rsa_alg(card, 1024, flags, 0);
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_sc_card_add_rsa_alg(card, 2048, flags, 0);
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_sc_card_add_rsa_alg(card, 3072, flags, 0);
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card->caps |= SC_CARD_CAP_APDU_EXT;
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return SC_SUCCESS;
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}
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static int masktech_finish(sc_card_t *card)
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{
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/* free the private data */
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if (card->drv_data) {
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free(card->drv_data);
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card->drv_data = NULL;
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}
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return 0;
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}
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static int masktech_set_security_env(sc_card_t *card,
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const sc_security_env_t *env,
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int se_num)
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{
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struct masktech_private_data *private_data;
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "masktech_set_security_env(), keyRef = 0x%0x, algo = 0x%0x\n",
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*env->key_ref, env->algorithm_flags);
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private_data = (struct masktech_private_data *) card->drv_data;
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if (!private_data)
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return SC_ERROR_INTERNAL;
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/* save the key reference */
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if (env->flags & SC_SEC_ENV_KEY_REF_PRESENT) {
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if (env->key_ref_len != 1) {
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "Invalid key reference supplied.\n");
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return SC_ERROR_NOT_SUPPORTED;
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}
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private_data->rsa_key_ref = env->key_ref[0];
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}
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return iso_ops->set_security_env(card, env, se_num);
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}
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static int masktech_compute_signature(sc_card_t *card,
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const u8 * data,
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size_t datalen,
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u8 * out,
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size_t outlen)
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{
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struct masktech_private_data *private_data;
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u8 sha256hash[32];
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static const u8 hdr_sha256[] = {
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0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65,
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0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20
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};
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assert(card != NULL && data != NULL && out != NULL);
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "masktech_compute_signature()\n");
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/* retrieve the key reference */
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private_data = (struct masktech_private_data *) card->drv_data;
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if (!private_data)
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return SC_ERROR_INTERNAL;
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if (private_data->rsa_key_ref == 0x88)
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{
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/* for this key reference, the card supports only SHA256 hash and the hash is computed using a digest info */
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/* check that it is a SHA256 with digest info*/
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if ((datalen != sizeof(hdr_sha256) + 32) || (memcmp(hdr_sha256, data, sizeof(hdr_sha256)) != 0))
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{
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "It is not a SHA256 with digestinfo\n");
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return SC_ERROR_NOT_SUPPORTED;
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}
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/* extract the SHA-256 hash */
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memcpy(sha256hash, (u8 *)(data+(datalen-32)), 32);//only last 32 byte => sha256
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/* default ISO 7816 functions */
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return iso_ops->compute_signature(card, sha256hash, 32, out, outlen);
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}
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else
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{
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/* default ISO 7816 functions */
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return iso_ops->compute_signature(card, data, datalen, out, outlen);
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}
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}
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static int masktech_decipher(sc_card_t *card,
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const u8 * crgram,
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size_t crgram_len,
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u8 * out,
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size_t outlen)
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{
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int r;
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sc_apdu_t apdu;
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u8 sbuf[SC_MAX_EXT_APDU_BUFFER_SIZE];
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u8 rbuf[SC_MAX_EXT_APDU_BUFFER_SIZE];
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assert(card != NULL && crgram != NULL && out != NULL);
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sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "masktech_decipher()\n");
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if (crgram_len > sizeof(sbuf)) SC_ERROR_INVALID_ARGUMENTS;
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sc_format_apdu(card, &apdu, SC_APDU_CASE_4_EXT, 0x2A, 0x80, 0x86);
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apdu.resp = rbuf;
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apdu.resplen = sizeof(rbuf);
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/* the card doesn't support anything else here (+1 / -1 is not working) */
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apdu.le = 65536;
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/* crgram is a const u8 while apdu.data is not a const => it cannot be used directly */
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memcpy(&sbuf, crgram, crgram_len);
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apdu.data = sbuf;
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apdu.lc = crgram_len;
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apdu.datalen = crgram_len;
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r = sc_transmit_apdu(card, &apdu);
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SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, r, "APDU transmit failed");
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if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00) {
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size_t len = apdu.resplen > outlen ? outlen : apdu.resplen;
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memcpy(out, apdu.resp, len);
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SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_VERBOSE, len);
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}
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SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_VERBOSE, sc_check_sw(card, apdu.sw1, apdu.sw2));
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}
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/* we built a special APDU to be compatible with pinpad readers */
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/* maybe patch opensc to strip the first pin in iso build APDU if SC_PIN_CMD_IMPLICIT_CHANGE is set */
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static int masktech_build_unblock_pin_apdu(sc_card_t *card,
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sc_apdu_t *apdu,
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struct sc_pin_cmd_data *data,
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u8 *buf,
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size_t buf_len)
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{
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int r, len = 0;
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int p1 = 0x02;
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data->pin1.offset = 5;
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if (data->pin2.len != 0 || data->flags & SC_PIN_CMD_USE_PINPAD) {
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data->pin2.offset = data->pin1.offset + buf_len;
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if ((r = sc_build_pin(buf+len, buf_len-len, &data->pin2, data->flags & SC_PIN_CMD_NEED_PADDING)) < 0)
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return r;
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len += r;
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} else {
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p1 |= 0x01;
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}
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sc_format_apdu(card, apdu, SC_APDU_CASE_3_SHORT, 0x2C, p1, data->pin_reference);
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apdu->lc = len;
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apdu->datalen = len;
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apdu->data = buf;
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apdu->resplen = 0;
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return 0;
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}
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/* we built a special APDU to be compatible with pinpad readers */
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/* maybe patch opensc to strip the first pin in iso build APDU if SC_PIN_CMD_IMPLICIT_CHANGE is set */
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static int masktech_build_change_pin_apdu(sc_card_t *card,
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sc_apdu_t *apdu,
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struct sc_pin_cmd_data *data,
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u8 *buf,
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size_t buf_len)
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{
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int r, len = 0;
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int p1 = 1;
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data->pin1.offset = 5;
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data->pin2.offset = data->pin1.offset + len;
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if ((r = sc_build_pin(buf+len, buf_len-len, &data->pin2, data->flags & SC_PIN_CMD_NEED_PADDING)) < 0)
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return r;
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len += r;
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sc_format_apdu(card, apdu, SC_APDU_CASE_3_SHORT, 0x24, p1, data->pin_reference);
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apdu->lc = len;
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apdu->datalen = len;
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apdu->data = buf;
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apdu->resplen = 0;
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return 0;
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}
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/* unblock pin cmd */
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static int masktech_pin_unblock(sc_card_t *card,
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struct sc_pin_cmd_data *data,
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int *tries_left)
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{
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int rv = 0;
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struct sc_pin_cmd_data verify_data;
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struct sc_pin_cmd_data reset_data;
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u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
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sc_apdu_t reset_apdu;
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/* Build a SC_PIN_CMD_VERIFY APDU on PUK */
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memset(&verify_data, 0, sizeof(verify_data));
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verify_data.cmd = SC_PIN_CMD_VERIFY;
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verify_data.pin_type = 1;
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verify_data.pin_reference = 0x83;
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verify_data.pin1 = data->pin1;
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verify_data.flags = data->flags;
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verify_data.pin1.prompt = data->pin1.prompt;
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rv = iso_ops->pin_cmd(card, &verify_data, tries_left);
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SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, rv, "APDU transmit failed - verify unblock PIN");
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/* Build a SC_PIN_CMD_UNBLOCK APDU */
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memset(&reset_data, 0, sizeof(reset_data));
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reset_data.cmd = SC_PIN_CMD_UNBLOCK;
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reset_data.pin_type = 1;
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reset_data.pin_reference = 0x91;
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/* pin1 is set to null on purpose and flag set to implicit change
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=> if there is a pinpad reader, do not ask for pin1 */
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reset_data.pin2 = data->pin2;
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reset_data.flags = data->flags | SC_PIN_CMD_IMPLICIT_CHANGE;
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reset_data.pin2.prompt = data->pin2.prompt;
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/* the APDU is overwritten to avoid requesting the UNBLOCK pin if a PIN PAD is used */
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masktech_build_unblock_pin_apdu(card, &reset_apdu, &reset_data, sbuf, sizeof(sbuf));
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reset_data.apdu = &reset_apdu;
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rv = iso_ops->pin_cmd(card, &reset_data, tries_left);
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SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, rv, "APDU transmit failed - reset unblock PIN");
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return 0;
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}
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static int masktech_pin_change(sc_card_t *card,
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struct sc_pin_cmd_data *data,
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int *tries_left)
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{
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int rv = 0;
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struct sc_pin_cmd_data verify_data;
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struct sc_pin_cmd_data change_data;
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u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
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sc_apdu_t change_apdu;
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/* Build a SC_PIN_CMD_VERIFY APDU */
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memset(&verify_data, 0, sizeof(verify_data));
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verify_data.cmd = SC_PIN_CMD_VERIFY;
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verify_data.pin_type = 1;
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verify_data.pin_reference = data->pin_reference;
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verify_data.pin1 = data->pin1;
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verify_data.flags = data->flags;
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verify_data.pin1.prompt = data->pin1.prompt;
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rv = iso_ops->pin_cmd(card, &verify_data, tries_left);
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SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, rv, "APDU transmit failed - verify change PIN");
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/* Build a SC_PIN_CMD_CHANGE APDU */
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memset(&change_data, 0, sizeof(change_data));
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change_data.cmd = SC_PIN_CMD_CHANGE;
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change_data.pin_type = 1;
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change_data.pin_reference = data->pin_reference;
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/* pin1 is set to null on purpose and flag set to implicit change
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=> if there is a pinpad reader, do not ask for pin1 */
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change_data.pin2 = data->pin2;
|
||
|
change_data.flags = data->flags | SC_PIN_CMD_IMPLICIT_CHANGE;
|
||
|
change_data.pin2.prompt = data->pin2.prompt;
|
||
|
|
||
|
/* the APDU is overwritten to avoid requesting the INITIAL pin if a PIN PAD is used */
|
||
|
masktech_build_change_pin_apdu(card, &change_apdu, &change_data, sbuf, sizeof(sbuf));
|
||
|
change_data.apdu = &change_apdu;
|
||
|
|
||
|
rv = iso_ops->pin_cmd(card, &change_data, tries_left);
|
||
|
SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, rv, "APDU transmit failed - chnage PIN");
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int masktech_pin_cmd(sc_card_t *card,
|
||
|
struct sc_pin_cmd_data *data,
|
||
|
int *tries_left)
|
||
|
{
|
||
|
int rv;
|
||
|
SC_FUNC_CALLED(card->ctx, SC_LOG_DEBUG_VERBOSE);
|
||
|
|
||
|
switch(data->cmd)
|
||
|
{
|
||
|
case SC_PIN_CMD_UNBLOCK:
|
||
|
rv = masktech_pin_unblock(card, data, tries_left);
|
||
|
break;
|
||
|
case SC_PIN_CMD_CHANGE:
|
||
|
rv = masktech_pin_change(card, data, tries_left);
|
||
|
break;
|
||
|
default:
|
||
|
rv = iso_ops->pin_cmd(card, data, tries_left);
|
||
|
break;
|
||
|
}
|
||
|
return rv;
|
||
|
|
||
|
|
||
|
}
|
||
|
|
||
|
static int masktech_get_serialnr(sc_card_t * card, sc_serial_number_t * serial)
|
||
|
{
|
||
|
struct sc_apdu apdu;
|
||
|
unsigned char apdu_resp[SC_MAX_APDU_BUFFER_SIZE-2];
|
||
|
int rv;
|
||
|
|
||
|
if (!serial)
|
||
|
SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_NORMAL, SC_ERROR_INVALID_ARGUMENTS);
|
||
|
|
||
|
/* Get smart card serial number */
|
||
|
card->cla = 0x80;
|
||
|
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0x08, 0x00, 0x00);
|
||
|
apdu.resplen = sizeof(apdu_resp);
|
||
|
apdu.resp = apdu_resp;
|
||
|
|
||
|
rv = sc_transmit_apdu(card, &apdu);
|
||
|
card->cla = 0x00;
|
||
|
|
||
|
SC_TEST_RET(card->ctx, SC_LOG_DEBUG_NORMAL, rv, "APDU transmit failed");
|
||
|
|
||
|
if (apdu.sw1 != 0x90 || apdu.sw2 != 0x00)
|
||
|
return SC_ERROR_INTERNAL;
|
||
|
|
||
|
if (SC_MAX_SERIALNR < apdu.resplen)
|
||
|
{
|
||
|
SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_NORMAL, SC_ERROR_INTERNAL);
|
||
|
}
|
||
|
/* cache serial number */
|
||
|
card->serialnr.len = apdu.resplen;
|
||
|
memcpy(card->serialnr.value, apdu.resp, card->serialnr.len);
|
||
|
|
||
|
/* copy and return serial number */
|
||
|
if (serial)
|
||
|
memcpy(serial, &card->serialnr, sizeof(*serial));
|
||
|
|
||
|
SC_FUNC_RETURN(card->ctx, SC_LOG_DEBUG_NORMAL, SC_SUCCESS);
|
||
|
}
|
||
|
|
||
|
|
||
|
static int masktech_card_ctl(sc_card_t * card, unsigned long cmd, void *ptr)
|
||
|
{
|
||
|
sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "masktech_card_ctl()\n");
|
||
|
switch (cmd) {
|
||
|
case SC_CARDCTL_GET_SERIALNR:
|
||
|
return masktech_get_serialnr(card, (sc_serial_number_t *) ptr);
|
||
|
default:
|
||
|
return SC_ERROR_NOT_SUPPORTED;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static struct sc_card_driver *sc_get_driver(void)
|
||
|
{
|
||
|
|
||
|
if (iso_ops == NULL)
|
||
|
iso_ops = sc_get_iso7816_driver()->ops;
|
||
|
|
||
|
masktech_ops = *iso_ops;
|
||
|
|
||
|
masktech_ops.match_card = masktech_match_card;
|
||
|
masktech_ops.init = masktech_init;
|
||
|
masktech_ops.finish = masktech_finish;
|
||
|
masktech_ops.set_security_env = masktech_set_security_env;
|
||
|
masktech_ops.compute_signature = masktech_compute_signature;
|
||
|
masktech_ops.decipher = masktech_decipher;
|
||
|
masktech_ops.pin_cmd = masktech_pin_cmd;
|
||
|
masktech_ops.card_ctl = masktech_card_ctl;
|
||
|
return &masktech_drv;
|
||
|
}
|
||
|
|
||
|
struct sc_card_driver *sc_get_masktech_driver(void)
|
||
|
{
|
||
|
return sc_get_driver();
|
||
|
}
|