mirror of
https://github.com/polhenarejos/pico-hsm.git
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0017284103
gnuk/openpgp will be left as another pkcs15 app. Lots of work has been done in the meanwhile. Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
1611 lines
37 KiB
C
1611 lines
37 KiB
C
/*
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* openpgp.c -- OpenPGP card protocol support
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*
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* Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
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* 2019, 2021
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* Free Software Initiative of Japan
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* Author: NIIBE Yutaka <gniibe@fsij.org>
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*
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* This file is a part of Gnuk, a GnuPG USB Token implementation.
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*
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* Gnuk is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Gnuk is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdint.h>
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#include <string.h>
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#include "config.h"
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#include "gnuk.h"
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//#include "sys.h"
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#include "status-code.h"
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#include "mbedtls/sha256.h"
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#include "random.h"
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#include "pico/util/queue.h"
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#include "pico/multicore.h"
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#include "hsm2040.h"
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#include "tusb.h"
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#include "file.h"
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#include "libopensc/card-sc-hsm.h"
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extern const uint8_t openpgpcard_aid[];
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static int openpgp_process_apdu();
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static int gpg_fini();
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app_t *openpgp_select_aid(app_t *a) {
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if (!memcmp(apdu.cmd_apdu_data, openpgpcard_aid+1, MIN(apdu.cmd_apdu_data_len,openpgpcard_aid[0]))) {
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a->aid = openpgpcard_aid;
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a->process_apdu = openpgp_process_apdu;
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a->unload = gpg_fini;
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return a;
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}
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return NULL;
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}
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void __attribute__ ((constructor)) openpgp_ctor() {
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register_app(openpgp_select_aid);
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}
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#define USER_PASSWD_MINLEN 6
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#define ADMIN_PASSWD_MINLEN 8
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#define INS_VERIFY 0x20
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#define INS_CHANGE_REFERENCE_DATA 0x24
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#define INS_PSO 0x2a
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#define INS_RESET_RETRY_COUNTER 0x2c
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#define INS_ACTIVATE_FILE 0x44
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#define INS_PGP_GENERATE_ASYMMETRIC_KEY_PAIR 0x47
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#define INS_EXTERNAL_AUTHENTICATE 0x82
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#define INS_GET_CHALLENGE 0x84
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#define INS_INTERNAL_AUTHENTICATE 0x88
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#define INS_SELECT_FILE 0xa4
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#define INS_READ_BINARY 0xb0
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#define INS_READ_BINARY_ODD 0xb1
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#define INS_GET_DATA 0xca
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#define INS_WRITE_BINARY 0xd0
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#define INS_UPDATE_BINARY 0xd6
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#define INS_PUT_DATA 0xda
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#define INS_PUT_DATA_ODD 0xdb /* For key import */
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#define INS_TERMINATE_DF 0xe6
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static const uint8_t *challenge; /* Random bytes */
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static const uint8_t
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select_file_TOP_result[] __attribute__ ((aligned (1))) = {
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0x00, 0x00, /* unused */
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0x00, 0x00, /* number of bytes in this directory: to be filled */
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0x3f, 0x00, /* field of selected file: MF, 3f00 */
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0x38, /* it's DF */
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0xff, /* unused */
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0xff, 0x44, 0x44, /* access conditions */
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0x01, /* status of the selected file (OK, unblocked) */
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0x05, /* number of bytes of data follow */
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0x03, /* Features: unused */
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0x01, /* number of subdirectories (OpenPGP) */
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0x01, /* number of elementary files (SerialNo) */
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0x00, /* number of secret codes */
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0x00, /* Unused */
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0x00, 0x00 /* PIN status: OK, PIN blocked?: No */
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};
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#define FILE_NONE 0
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#define FILE_DF_OPENPGP 1
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#define FILE_MF 2
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#define FILE_EF_DIR 3
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#define FILE_EF_SERIAL_NO 4
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#define FILE_EF_UPDATE_KEY_0 5
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#define FILE_EF_UPDATE_KEY_1 6
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#define FILE_EF_UPDATE_KEY_2 7
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#define FILE_EF_UPDATE_KEY_3 8
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#define FILE_EF_CH_CERTIFICATE 9
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#define FILE_DF_SC_HSM 10
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#define FILE_CARD_TERMINATED 255
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uint8_t file_selection;
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static void
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gpg_init (void)
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{
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const uint8_t *flash_do_start;
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const uint8_t *flash_do_end;
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flash_do_storage_init (&flash_do_start, &flash_do_end);
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if (flash_do_start == NULL)
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file_selection = FILE_CARD_TERMINATED;
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else
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file_selection = FILE_NONE;
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gpg_data_scan (flash_do_start, flash_do_end);
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flash_key_storage_init ();
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multicore_lockout_victim_init();
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}
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static int
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gpg_fini (void)
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{
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ac_fini ();
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return 0;
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}
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#if defined(PINPAD_SUPPORT)
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/*
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* Let user input PIN string.
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* Return length of the string.
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* The string itself is in PIN_INPUT_BUFFER.
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*/
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static int
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get_pinpad_input (int msg_code)
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{
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int r;
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led_blink (LED_START_COMMAND);
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r = pinpad_getline (msg_code, 8000000);
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led_blink (LED_FINISH_COMMAND);
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return r;
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}
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#endif
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static void cmd_verify (queue_t *ccid_comm)
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{
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int len;
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uint8_t p1 = P1 (apdu);
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uint8_t p2 = P2 (apdu);
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int r;
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const uint8_t *pw;
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(void)ccid_comm;
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DEBUG_INFO (" - VERIFY\r\n");
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DEBUG_BYTE (p2);
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len = apdu.cmd_apdu_data_len;
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pw = apdu.cmd_apdu_data;
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if (len == 0)
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{
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if (p1 == 0)
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{ /* This is to examine status. */
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if (p2 == 0x81)
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r = ac_check_status (AC_PSO_CDS_AUTHORIZED);
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else if (p2 == 0x82)
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r = ac_check_status (AC_OTHER_AUTHORIZED);
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else
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r = ac_check_status (AC_ADMIN_AUTHORIZED);
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if (r)
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/* If authentication done already, return success. */
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GPG_SUCCESS ();
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else
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{ /* If not, return retry counter, encoded. */
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r = gpg_pw_get_retry_counter (p2);
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set_res_sw (0x63, 0xc0 | (r&0x0f));
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}
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}
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else if (p1 == 0xff)
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{ /* Reset the status. */
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if (p2 == 0x81)
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ac_reset_pso_cds ();
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else if (p2 == 0x82)
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ac_reset_other ();
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else
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ac_reset_admin ();
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GPG_SUCCESS ();
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}
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else
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GPG_BAD_P1_P2 ();
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return;
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}
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if (gpg_do_kdf_check (len, 1) == 0)
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{
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GPG_CONDITION_NOT_SATISFIED ();
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return;
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}
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/* This is real authentication. */
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if (p2 == 0x81)
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r = verify_pso_cds (pw, len);
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else if (p2 == 0x82)
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r = verify_other (pw, len);
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else
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r = verify_admin (pw, len);
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if (r < 0)
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{
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DEBUG_INFO ("failed\r\n");
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GPG_SECURITY_FAILURE ();
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}
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else if (r == 0)
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{
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DEBUG_INFO ("blocked\r\n");
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GPG_SECURITY_AUTH_BLOCKED ();
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}
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else
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{
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DEBUG_INFO ("good\r\n");
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GPG_SUCCESS ();
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}
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}
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int
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gpg_change_keystring (int who_old, const uint8_t *old_ks,
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int who_new, const uint8_t *new_ks)
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{
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int r;
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int prv_keys_exist = 0;
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r = gpg_do_load_prvkey (GPG_KEY_FOR_SIGNING, who_old, old_ks);
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if (r < 0)
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return r;
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if (r > 0)
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prv_keys_exist++;
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r = gpg_do_chks_prvkey (GPG_KEY_FOR_SIGNING, who_old, old_ks,
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who_new, new_ks);
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if (r < 0)
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return -2;
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r = gpg_do_load_prvkey (GPG_KEY_FOR_DECRYPTION, who_old, old_ks);
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if (r < 0)
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return r;
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if (r > 0)
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prv_keys_exist++;
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r = gpg_do_chks_prvkey (GPG_KEY_FOR_DECRYPTION, who_old, old_ks,
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who_new, new_ks);
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if (r < 0)
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return -2;
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r = gpg_do_load_prvkey (GPG_KEY_FOR_AUTHENTICATION, who_old, old_ks);
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if (r < 0)
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return r;
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if (r > 0)
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prv_keys_exist++;
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r = gpg_do_chks_prvkey (GPG_KEY_FOR_AUTHENTICATION, who_old, old_ks,
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who_new, new_ks);
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if (r < 0)
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return -2;
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if (prv_keys_exist)
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return 1;
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else
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return 0;
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}
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static void
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cmd_change_password (queue_t *ccid_comm)
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{
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uint8_t old_ks[KEYSTRING_MD_SIZE];
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uint8_t new_ks0[KEYSTRING_SIZE];
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uint8_t *new_salt = KS_GET_SALT (new_ks0);
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int newsalt_len = SALT_SIZE;
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uint8_t *new_ks = KS_GET_KEYSTRING (new_ks0);
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uint8_t p1 = P1 (apdu); /* 0: change (old+new), 1: exchange (new) */
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uint8_t p2 = P2 (apdu);
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int len;
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uint8_t *pw, *newpw;
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int pw_len, newpw_len;
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int who = p2 - 0x80;
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int who_old;
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int r;
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int pw3_null = 0;
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const uint8_t *salt;
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int salt_len;
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const uint8_t *ks_pw3;
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(void)ccid_comm;
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DEBUG_INFO ("Change PW\r\n");
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DEBUG_BYTE (who);
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len = apdu.cmd_apdu_data_len;
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pw = apdu.cmd_apdu_data;
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if (p1 != 0)
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{
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GPG_FUNCTION_NOT_SUPPORTED ();
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return;
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}
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if (gpg_do_kdf_check (len, 2) == 0)
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{
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GPG_CONDITION_NOT_SATISFIED ();
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return;
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}
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if (who == BY_USER) /* PW1 */
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{
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const uint8_t *ks_pw1 = gpg_do_read_simple (NR_DO_KEYSTRING_PW1);
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who_old = who;
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pw_len = verify_user_0 (AC_PSO_CDS_AUTHORIZED, pw, len, -1, ks_pw1, 0);
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if (ks_pw1 == NULL)
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{
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salt = NULL;
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salt_len = 0;
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}
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else
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{
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salt = KS_GET_SALT (ks_pw1);
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salt_len = SALT_SIZE;
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}
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if (pw_len < 0)
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{
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DEBUG_INFO ("permission denied.\r\n");
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GPG_SECURITY_FAILURE ();
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return;
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}
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else if (pw_len == 0)
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{
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DEBUG_INFO ("blocked.\r\n");
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GPG_SECURITY_AUTH_BLOCKED ();
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return;
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}
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else
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{
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newpw = pw + pw_len;
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newpw_len = len - pw_len;
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ks_pw3 = gpg_do_read_simple (NR_DO_KEYSTRING_PW3);
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/* Check length of password */
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if ((ks_pw3 == NULL && newpw_len < ADMIN_PASSWD_MINLEN)
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|| newpw_len < USER_PASSWD_MINLEN)
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{
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DEBUG_INFO ("new password length is too short.");
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GPG_CONDITION_NOT_SATISFIED ();
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return;
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}
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}
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}
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else /* PW3 (0x83) */
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{
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ks_pw3 = gpg_do_read_simple (NR_DO_KEYSTRING_PW3);
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pw_len = verify_admin_0 (pw, len, -1, ks_pw3, 0);
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if (ks_pw3 == NULL)
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{
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if (admin_authorized == BY_USER)
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{
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const uint8_t *ks_pw1 = gpg_do_read_simple (NR_DO_KEYSTRING_PW1);
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if (ks_pw1 == NULL)
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{
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GPG_SECURITY_FAILURE ();
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return;
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}
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salt = KS_GET_SALT (ks_pw1);
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salt_len = SALT_SIZE;
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}
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else
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{
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salt = NULL;
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salt_len = 0;
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}
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}
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else
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{
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salt = KS_GET_SALT (ks_pw3);
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salt_len = SALT_SIZE;
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}
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if (pw_len < 0)
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{
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DEBUG_INFO ("permission denied.\r\n");
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GPG_SECURITY_FAILURE ();
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return;
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}
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else if (pw_len == 0)
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{
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DEBUG_INFO ("blocked.\r\n");
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GPG_SECURITY_AUTH_BLOCKED ();
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return;
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}
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else
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{
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newpw = pw + pw_len;
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newpw_len = len - pw_len;
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if (newpw_len == 0 && admin_authorized == BY_ADMIN)
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{
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const uint8_t *initial_pw;
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gpg_do_get_initial_pw_setting (1, &newpw_len, &initial_pw);
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memcpy (newpw, initial_pw, newpw_len);
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newsalt_len = 0;
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pw3_null = 1;
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}
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else if (newpw_len < ADMIN_PASSWD_MINLEN)
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{
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DEBUG_INFO ("new password length is too short.");
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GPG_CONDITION_NOT_SATISFIED ();
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return;
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}
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who_old = admin_authorized;
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}
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}
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if (newsalt_len != 0)
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random_get_salt (new_salt);
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s2k (salt, salt_len, pw, pw_len, old_ks);
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s2k (new_salt, newsalt_len, newpw, newpw_len, new_ks);
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new_ks0[0] = newpw_len;
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r = gpg_change_keystring (who_old, old_ks, who, new_ks);
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if (r <= -2)
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{
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DEBUG_INFO ("memory error.\r\n");
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GPG_MEMORY_FAILURE ();
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}
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else if (r < 0)
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{
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DEBUG_INFO ("security error.\r\n");
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GPG_SECURITY_FAILURE ();
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}
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else if (r == 0 && who == BY_USER) /* no prvkey */
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{
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DEBUG_INFO ("user pass change not supported with no keys.\r\n");
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GPG_CONDITION_NOT_SATISFIED ();
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}
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else if (r > 0 && who == BY_USER)
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{
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/* When it was already admin-less mode, admin_authorized is
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* BY_USER. If no PW3 keystring, it's becoming admin-less mode,
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* now. For these two cases, we need to reset admin
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* authorization status. */
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if (admin_authorized == BY_USER)
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ac_reset_admin ();
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else if (ks_pw3 == NULL)
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{
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enum kind_of_key kk0;
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/* Remove keystrings for BY_ADMIN. */
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for (kk0 = 0; kk0 <= GPG_KEY_FOR_AUTHENTICATION; kk0++)
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gpg_do_chks_prvkey (kk0, BY_ADMIN, NULL, 0, NULL);
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ac_reset_admin ();
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}
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gpg_do_write_simple (NR_DO_KEYSTRING_PW1, new_ks0, KS_META_SIZE);
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ac_reset_pso_cds ();
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ac_reset_other ();
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DEBUG_INFO ("Changed length of DO_KEYSTRING_PW1.\r\n");
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GPG_SUCCESS ();
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}
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else if (r > 0 && who == BY_ADMIN)
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{
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if (pw3_null)
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gpg_do_write_simple (NR_DO_KEYSTRING_PW3, NULL, 0);
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else
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gpg_do_write_simple (NR_DO_KEYSTRING_PW3, new_ks0, KS_META_SIZE);
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ac_reset_admin ();
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DEBUG_INFO ("Changed length of DO_KEYSTRING_PW3.\r\n");
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GPG_SUCCESS ();
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}
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else /* r == 0 && who == BY_ADMIN */ /* no prvkey */
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{
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if (pw3_null)
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gpg_do_write_simple (NR_DO_KEYSTRING_PW3, NULL, 0);
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else
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{
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new_ks0[0] |= PW_LEN_KEYSTRING_BIT;
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gpg_do_write_simple (NR_DO_KEYSTRING_PW3, new_ks0, KEYSTRING_SIZE);
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}
|
|
DEBUG_INFO ("Changed DO_KEYSTRING_PW3.\r\n");
|
|
ac_reset_admin ();
|
|
GPG_SUCCESS ();
|
|
}
|
|
}
|
|
|
|
|
|
#ifndef S2KCOUNT
|
|
/*
|
|
* OpenPGP uses the value 65535 for the key on disk.
|
|
* Given the condition that the access to flash ROM is harder than disk,
|
|
* that is, the threat model is different, we chose the default value 192.
|
|
*/
|
|
#define S2KCOUNT 192
|
|
#endif
|
|
void
|
|
s2k (const unsigned char *salt, size_t slen,
|
|
const unsigned char *input, size_t ilen, unsigned char output[32])
|
|
{
|
|
mbedtls_sha256_context ctx;
|
|
mbedtls_sha256_init(&ctx);
|
|
size_t count = S2KCOUNT;
|
|
const uint8_t *unique = unique_device_id ();
|
|
|
|
mbedtls_sha256_starts (&ctx, 0);
|
|
|
|
mbedtls_sha256_update (&ctx, unique, 12);
|
|
|
|
while (count > slen + ilen)
|
|
{
|
|
if (slen)
|
|
mbedtls_sha256_update (&ctx, salt, slen);
|
|
mbedtls_sha256_update (&ctx, input, ilen);
|
|
count -= slen + ilen;
|
|
}
|
|
|
|
if (count <= slen)
|
|
mbedtls_sha256_update (&ctx, salt, count);
|
|
else
|
|
{
|
|
if (slen)
|
|
{
|
|
mbedtls_sha256_update (&ctx, salt, slen);
|
|
count -= slen;
|
|
}
|
|
mbedtls_sha256_update (&ctx, input, count);
|
|
}
|
|
|
|
mbedtls_sha256_finish (&ctx, output);
|
|
mbedtls_sha256_free (&ctx);
|
|
}
|
|
|
|
|
|
static void
|
|
cmd_reset_user_password (queue_t *ccid_comm)
|
|
{
|
|
uint8_t p1 = P1 (apdu);
|
|
int len;
|
|
const uint8_t *pw;
|
|
const uint8_t *newpw;
|
|
int pw_len, newpw_len;
|
|
int r;
|
|
uint8_t new_ks0[KEYSTRING_SIZE];
|
|
uint8_t *new_ks = KS_GET_KEYSTRING (new_ks0);
|
|
uint8_t *new_salt = KS_GET_SALT (new_ks0);
|
|
const uint8_t *ks_pw3 = gpg_do_read_simple (NR_DO_KEYSTRING_PW3);
|
|
const uint8_t *salt;
|
|
int salt_len;
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO ("Reset PW1\r\n");
|
|
DEBUG_BYTE (p1);
|
|
|
|
len = apdu.cmd_apdu_data_len;
|
|
pw = apdu.cmd_apdu_data;
|
|
|
|
if (p1 == 0x00) /* by User with Reseting Code */
|
|
{
|
|
const uint8_t *ks_rc = gpg_do_read_simple (NR_DO_KEYSTRING_RC);
|
|
uint8_t old_ks[KEYSTRING_MD_SIZE];
|
|
|
|
if (gpg_do_kdf_check (len, 2) == 0)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
if (gpg_pw_locked (PW_ERR_RC))
|
|
{
|
|
DEBUG_INFO ("blocked.\r\n");
|
|
GPG_SECURITY_AUTH_BLOCKED ();
|
|
return;
|
|
}
|
|
|
|
if (ks_rc == NULL)
|
|
{
|
|
DEBUG_INFO ("security error.\r\n");
|
|
GPG_SECURITY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
pw_len = ks_rc[0] & PW_LEN_MASK;
|
|
salt = KS_GET_SALT (ks_rc);
|
|
salt_len = SALT_SIZE;
|
|
newpw = pw + pw_len;
|
|
newpw_len = len - pw_len;
|
|
|
|
/* Check length of new password */
|
|
if ((ks_pw3 == NULL && newpw_len < ADMIN_PASSWD_MINLEN)
|
|
|| newpw_len < USER_PASSWD_MINLEN)
|
|
{
|
|
DEBUG_INFO ("new password length is too short.");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
random_get_salt (new_salt);
|
|
s2k (salt, salt_len, pw, pw_len, old_ks);
|
|
s2k (new_salt, SALT_SIZE, newpw, newpw_len, new_ks);
|
|
new_ks0[0] = newpw_len;
|
|
r = gpg_change_keystring (BY_RESETCODE, old_ks, BY_USER, new_ks);
|
|
if (r <= -2)
|
|
{
|
|
DEBUG_INFO ("memory error.\r\n");
|
|
GPG_MEMORY_FAILURE ();
|
|
}
|
|
else if (r < 0)
|
|
{
|
|
DEBUG_INFO ("failed.\r\n");
|
|
gpg_pw_increment_err_counter (PW_ERR_RC);
|
|
GPG_SECURITY_FAILURE ();
|
|
}
|
|
else if (r == 0)
|
|
{
|
|
DEBUG_INFO ("user pass change not supported with no keys.\r\n");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
}
|
|
else
|
|
{
|
|
DEBUG_INFO ("done.\r\n");
|
|
gpg_do_write_simple (NR_DO_KEYSTRING_PW1, new_ks0, KS_META_SIZE);
|
|
ac_reset_pso_cds ();
|
|
ac_reset_other ();
|
|
if (admin_authorized == BY_USER)
|
|
ac_reset_admin ();
|
|
gpg_pw_reset_err_counter (PW_ERR_RC);
|
|
gpg_pw_reset_err_counter (PW_ERR_PW1);
|
|
GPG_SUCCESS ();
|
|
}
|
|
}
|
|
else /* by Admin (p1 == 0x02) */
|
|
{
|
|
const uint8_t *old_ks = keystring_md_pw3;
|
|
|
|
if (!ac_check_status (AC_ADMIN_AUTHORIZED))
|
|
{
|
|
DEBUG_INFO ("permission denied.\r\n");
|
|
GPG_SECURITY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
if (gpg_do_kdf_check (len, 1) == 0)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
newpw_len = len;
|
|
newpw = pw;
|
|
|
|
/* Check length of new password */
|
|
if ((ks_pw3 == NULL && newpw_len < ADMIN_PASSWD_MINLEN)
|
|
|| newpw_len < USER_PASSWD_MINLEN)
|
|
{
|
|
DEBUG_INFO ("new password length is too short.");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
random_get_salt (new_salt);
|
|
s2k (new_salt, SALT_SIZE, newpw, newpw_len, new_ks);
|
|
new_ks0[0] = newpw_len;
|
|
r = gpg_change_keystring (admin_authorized, old_ks, BY_USER, new_ks);
|
|
if (r <= -2)
|
|
{
|
|
DEBUG_INFO ("memory error.\r\n");
|
|
GPG_MEMORY_FAILURE ();
|
|
}
|
|
else if (r < 0)
|
|
{
|
|
DEBUG_INFO ("security error.\r\n");
|
|
GPG_SECURITY_FAILURE ();
|
|
}
|
|
else if (r == 0)
|
|
{
|
|
DEBUG_INFO ("user pass change not supported with no keys.\r\n");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
}
|
|
else
|
|
{
|
|
DEBUG_INFO ("done.\r\n");
|
|
gpg_do_write_simple (NR_DO_KEYSTRING_PW1, new_ks0, KS_META_SIZE);
|
|
ac_reset_pso_cds ();
|
|
ac_reset_other ();
|
|
if (admin_authorized == BY_USER)
|
|
ac_reset_admin ();
|
|
gpg_pw_reset_err_counter (PW_ERR_PW1);
|
|
GPG_SUCCESS ();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
cmd_put_data (queue_t *ccid_comm)
|
|
{
|
|
uint8_t *data;
|
|
uint16_t tag;
|
|
int len;
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - PUT DATA\r\n");
|
|
|
|
tag = ((P1 (apdu)<<8) | P2 (apdu));
|
|
len = apdu.cmd_apdu_data_len;
|
|
data = apdu.cmd_apdu_data;
|
|
gpg_do_put_data (tag, data, len);
|
|
}
|
|
|
|
static void
|
|
cmd_pgp_gakp (queue_t *ccid_comm)
|
|
{
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - Generate Asymmetric Key Pair\r\n");
|
|
DEBUG_BYTE (P1 (apdu));
|
|
|
|
if (P1 (apdu) == 0x81)
|
|
/* Get public key */
|
|
gpg_do_public_key (apdu.cmd_apdu_data[0]);
|
|
else
|
|
{
|
|
if (!ac_check_status (AC_ADMIN_AUTHORIZED))
|
|
GPG_SECURITY_FAILURE ();
|
|
#ifdef KDF_DO_REQUIRED
|
|
else if (!gpg_do_kdf_check (0, 0))
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
#endif
|
|
else
|
|
gpg_do_keygen (&apdu.cmd_apdu_data[0]);
|
|
}
|
|
}
|
|
|
|
#ifdef FLASH_UPGRADE_SUPPORT
|
|
const uint8_t *
|
|
gpg_get_firmware_update_key (uint8_t keyno)
|
|
{
|
|
extern uint8_t _updatekey_store[1024];
|
|
const uint8_t *p;
|
|
|
|
p = _updatekey_store + keyno * FIRMWARE_UPDATE_KEY_CONTENT_LEN;
|
|
return p;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CERTDO_SUPPORT
|
|
#define FILEID_CH_CERTIFICATE_IS_VALID 1
|
|
#else
|
|
#define FILEID_CH_CERTIFICATE_IS_VALID 0
|
|
#endif
|
|
|
|
static void
|
|
cmd_read_binary (queue_t *ccid_comm)
|
|
{
|
|
int is_short_EF = (P1 (apdu) & 0x80) != 0;
|
|
uint8_t file_id;
|
|
uint16_t offset;
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - Read binary\r\n");
|
|
|
|
if (is_short_EF)
|
|
file_id = (P1 (apdu) & 0x1f);
|
|
else
|
|
file_id = file_selection - FILE_EF_SERIAL_NO + FILEID_SERIAL_NO;
|
|
|
|
if (is_short_EF)
|
|
{
|
|
file_selection = file_id - FILEID_SERIAL_NO + FILE_EF_SERIAL_NO;
|
|
offset = P2 (apdu);
|
|
}
|
|
else
|
|
offset = (P1 (apdu) << 8) | P2 (apdu);
|
|
|
|
if (file_id == FILEID_SERIAL_NO)
|
|
{
|
|
if (offset != 0)
|
|
GPG_BAD_P1_P2 ();
|
|
else
|
|
{
|
|
gpg_do_get_data (0x004f, 1); /* Get AID... */
|
|
res_APDU[0] = 0x5a; /* ... and overwrite the first byte of data. */
|
|
}
|
|
return;
|
|
}
|
|
#ifdef FLASH_UPGRADE_SUPPORT
|
|
else if (file_id >= FILEID_UPDATE_KEY_0 && file_id <= FILEID_UPDATE_KEY_3)
|
|
{
|
|
if (offset != 0)
|
|
GPG_MEMORY_FAILURE ();
|
|
else
|
|
{
|
|
const uint8_t *p;
|
|
|
|
p = gpg_get_firmware_update_key (file_id - FILEID_UPDATE_KEY_0);
|
|
res_APDU_size = FIRMWARE_UPDATE_KEY_CONTENT_LEN;
|
|
memcpy (res_APDU, p, FIRMWARE_UPDATE_KEY_CONTENT_LEN);
|
|
GPG_SUCCESS ();
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(CERTDO_SUPPORT)
|
|
else if (file_id == FILEID_CH_CERTIFICATE)
|
|
{
|
|
const uint8_t *p;
|
|
uint16_t len = 256;
|
|
|
|
p = ch_certificate_start;
|
|
if (offset >= FLASH_CH_CERTIFICATE_SIZE)
|
|
GPG_MEMORY_FAILURE ();
|
|
else
|
|
{
|
|
if (offset + len >= FLASH_CH_CERTIFICATE_SIZE)
|
|
len = FLASH_CH_CERTIFICATE_SIZE - offset;
|
|
|
|
res_APDU_size = len;
|
|
memcpy (res_APDU, p + offset, len);
|
|
GPG_SUCCESS ();
|
|
}
|
|
}
|
|
#endif
|
|
else
|
|
{
|
|
GPG_NO_FILE ();
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
cmd_select_file (queue_t *ccid_comm)
|
|
{
|
|
(void)ccid_comm;
|
|
if (P1 (apdu) == 4) /* Selection by DF name */
|
|
{
|
|
DEBUG_INFO (" - select DF by name\r\n");
|
|
|
|
/* name = D2 76 00 01 24 01 */
|
|
if (apdu.cmd_apdu_data_len != 6
|
|
|| memcmp (openpgpcard_aid, apdu.cmd_apdu_data, 6) != 0)
|
|
{
|
|
DEBUG_SHORT (apdu.cmd_apdu_data_len);
|
|
DEBUG_BINARY (apdu.cmd_apdu_data, apdu.cmd_apdu_data_len);
|
|
|
|
GPG_NO_FILE ();
|
|
return;
|
|
}
|
|
|
|
if (file_selection == FILE_CARD_TERMINATED)
|
|
{
|
|
GPG_APPLICATION_TERMINATED ();
|
|
return;
|
|
}
|
|
|
|
file_selection = FILE_DF_OPENPGP;
|
|
|
|
/* Behave just like original OpenPGP card. */
|
|
GPG_SUCCESS ();
|
|
}
|
|
else if (apdu.cmd_apdu_data_len == 2
|
|
&& apdu.cmd_apdu_data[0] == 0x2f && apdu.cmd_apdu_data[1] == 0x02)
|
|
{
|
|
DEBUG_INFO (" - select 0x2f02 EF\r\n");
|
|
/*
|
|
* MF.EF-GDO -- Serial number of the card and name of the owner
|
|
*/
|
|
GPG_SUCCESS ();
|
|
file_selection = FILE_EF_SERIAL_NO;
|
|
}
|
|
else if (apdu.cmd_apdu_data_len == 2
|
|
&& apdu.cmd_apdu_data[0] == 0x3f && apdu.cmd_apdu_data[1] == 0x00)
|
|
{
|
|
DEBUG_INFO (" - select ROOT MF\r\n");
|
|
if (P2 (apdu) == 0x0c)
|
|
{
|
|
GPG_SUCCESS ();
|
|
}
|
|
else
|
|
{
|
|
int len = sizeof (select_file_TOP_result);
|
|
|
|
res_APDU_size = len;
|
|
memcpy (res_APDU, select_file_TOP_result, len);
|
|
res_APDU[2] = (data_objects_number_of_bytes & 0xff);
|
|
res_APDU[3] = (data_objects_number_of_bytes >> 8);
|
|
GPG_SUCCESS ();
|
|
}
|
|
|
|
file_selection = FILE_MF;
|
|
ac_fini (); /* Reset authentication */
|
|
}
|
|
else
|
|
{
|
|
DEBUG_INFO (" - select ?? \r\n");
|
|
|
|
file_selection = FILE_NONE;
|
|
GPG_NO_FILE ();
|
|
}
|
|
}
|
|
|
|
static void
|
|
cmd_get_data (queue_t *ccid_comm)
|
|
{
|
|
uint16_t tag = ((P1 (apdu)<<8) | P2 (apdu));
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - Get Data\r\n");
|
|
|
|
gpg_do_get_data (tag, 0);
|
|
}
|
|
|
|
#define ECDSA_HASH_LEN 32
|
|
#define ECDSA_SIGNATURE_LENGTH 64
|
|
|
|
#define EDDSA_HASH_LEN_MAX 256
|
|
#define ED25519_SIGNATURE_LENGTH 64
|
|
#define ED448_SIGNATURE_LENGTH 114
|
|
|
|
#define ECC_CIPHER_DO_HEADER_SIZE 7
|
|
|
|
static void
|
|
cmd_pso (queue_t *ccid_comm)
|
|
{
|
|
int len = apdu.cmd_apdu_data_len;
|
|
int r = -1;
|
|
int attr;
|
|
int pubkey_len;
|
|
unsigned int result_len = 0;
|
|
int cs;
|
|
|
|
DEBUG_INFO (" - PSO: ");
|
|
DEBUG_WORD ((uint32_t)&r);
|
|
DEBUG_BINARY (apdu.cmd_apdu_data, apdu.cmd_apdu_data_len);
|
|
DEBUG_SHORT (len);
|
|
|
|
if (P1 (apdu) == 0x9e && P2 (apdu) == 0x9a)
|
|
{
|
|
attr = gpg_get_algo_attr (GPG_KEY_FOR_SIGNING);
|
|
pubkey_len = gpg_get_algo_attr_key_size (GPG_KEY_FOR_SIGNING,
|
|
GPG_KEY_PUBLIC);
|
|
|
|
if (!ac_check_status (AC_PSO_CDS_AUTHORIZED))
|
|
{
|
|
DEBUG_INFO ("security error.");
|
|
GPG_SECURITY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
#ifdef ACKBTN_SUPPORT
|
|
if (gpg_do_get_uif (GPG_KEY_FOR_SIGNING))
|
|
eventflag_signal (ccid_comm, EV_EXEC_ACK_REQUIRED);
|
|
#endif
|
|
|
|
if (attr == ALGO_RSA2K || attr == ALGO_RSA4K)
|
|
{
|
|
/* Check size of digestInfo */
|
|
if (len != 34 /* MD5 */
|
|
&& len != 35 /* SHA1 / RIPEMD-160 */
|
|
&& len != 47 /* SHA224 */
|
|
&& len != 51 /* SHA256 */
|
|
&& len != 67 /* SHA384 */
|
|
&& len != 83) /* SHA512 */
|
|
{
|
|
DEBUG_INFO (" wrong length");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
DEBUG_BINARY (kd[GPG_KEY_FOR_SIGNING].data, pubkey_len);
|
|
|
|
result_len = pubkey_len;
|
|
r = rsa_sign (apdu.cmd_apdu_data, res_APDU, len,
|
|
&kd[GPG_KEY_FOR_SIGNING], pubkey_len);
|
|
}
|
|
else if (attr == ALGO_SECP256K1)
|
|
{
|
|
/* ECDSA with p256r1/p256k1 for signature */
|
|
if (len != ECDSA_HASH_LEN)
|
|
{
|
|
DEBUG_INFO (" wrong length");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = ECDSA_SIGNATURE_LENGTH;
|
|
r = ecdsa_sign_p256k1 (apdu.cmd_apdu_data, res_APDU,
|
|
kd[GPG_KEY_FOR_SIGNING].data);
|
|
//chopstx_setcancelstate (cs);
|
|
}
|
|
else if (attr == ALGO_ED25519)
|
|
{
|
|
uint32_t output[ED25519_SIGNATURE_LENGTH/4]; /* Require 4-byte alignment. */
|
|
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = ED25519_SIGNATURE_LENGTH;
|
|
r = eddsa_sign_25519 (apdu.cmd_apdu_data, len, output,
|
|
kd[GPG_KEY_FOR_SIGNING].data,
|
|
kd[GPG_KEY_FOR_SIGNING].data+32,
|
|
kd[GPG_KEY_FOR_SIGNING].pubkey);
|
|
//chopstx_setcancelstate (cs);
|
|
memcpy (res_APDU, output, ED25519_SIGNATURE_LENGTH);
|
|
}
|
|
else if (attr == ALGO_ED448)
|
|
{
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = ED448_SIGNATURE_LENGTH;
|
|
r = ed448_sign (res_APDU, apdu.cmd_apdu_data, len,
|
|
kd[GPG_KEY_FOR_SIGNING].data,
|
|
kd[GPG_KEY_FOR_SIGNING].data+57,
|
|
kd[GPG_KEY_FOR_SIGNING].pubkey);
|
|
//chopstx_setcancelstate (cs);
|
|
}
|
|
else
|
|
{
|
|
DEBUG_INFO ("unknown algo.");
|
|
GPG_FUNCTION_NOT_SUPPORTED ();
|
|
return;
|
|
}
|
|
|
|
if (r == 0)
|
|
{
|
|
res_APDU_size = result_len;
|
|
gpg_increment_digital_signature_counter ();
|
|
}
|
|
else /* Failure */
|
|
ac_reset_pso_cds ();
|
|
}
|
|
else if (P1 (apdu) == 0x80 && P2 (apdu) == 0x86)
|
|
{
|
|
attr = gpg_get_algo_attr (GPG_KEY_FOR_DECRYPTION);
|
|
pubkey_len = gpg_get_algo_attr_key_size (GPG_KEY_FOR_DECRYPTION,
|
|
GPG_KEY_PUBLIC);
|
|
|
|
DEBUG_BINARY (kd[GPG_KEY_FOR_DECRYPTION].data, pubkey_len);
|
|
|
|
if (!ac_check_status (AC_OTHER_AUTHORIZED))
|
|
{
|
|
DEBUG_INFO ("security error.");
|
|
GPG_SECURITY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
#ifdef ACKBTN_SUPPORT
|
|
if (gpg_do_get_uif (GPG_KEY_FOR_DECRYPTION))
|
|
eventflag_signal (ccid_comm, EV_EXEC_ACK_REQUIRED);
|
|
#else
|
|
(void)ccid_comm;
|
|
#endif
|
|
|
|
if (attr == ALGO_RSA2K || attr == ALGO_RSA4K)
|
|
{
|
|
/* Skip padding 0x00 */
|
|
len--;
|
|
if (len != pubkey_len)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
r = rsa_decrypt (apdu.cmd_apdu_data+1, res_APDU, len,
|
|
&kd[GPG_KEY_FOR_DECRYPTION], &result_len);
|
|
}
|
|
else if (attr == ALGO_SECP256K1)
|
|
{
|
|
int header = ECC_CIPHER_DO_HEADER_SIZE;
|
|
|
|
/* Format is in big endian MPI: 04 || x || y */
|
|
if (len != 65 + ECC_CIPHER_DO_HEADER_SIZE
|
|
|| apdu.cmd_apdu_data[header] != 0x04)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = 65;
|
|
r = ecdh_decrypt_p256k1 (apdu.cmd_apdu_data + header, res_APDU,
|
|
kd[GPG_KEY_FOR_DECRYPTION].data);
|
|
//chopstx_setcancelstate (cs);
|
|
}
|
|
else if (attr == ALGO_CURVE25519)
|
|
{
|
|
int header = ECC_CIPHER_DO_HEADER_SIZE;
|
|
|
|
if (len != 32 + ECC_CIPHER_DO_HEADER_SIZE)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = 32;
|
|
r = ecdh_decrypt_curve25519 (apdu.cmd_apdu_data + header, res_APDU,
|
|
kd[GPG_KEY_FOR_DECRYPTION].data);
|
|
//chopstx_setcancelstate (cs);
|
|
}
|
|
else if (attr == ALGO_X448)
|
|
{
|
|
int header = ECC_CIPHER_DO_HEADER_SIZE;
|
|
|
|
if (len != 56 + ECC_CIPHER_DO_HEADER_SIZE)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = 56;
|
|
r = ecdh_decrypt_x448 (res_APDU, apdu.cmd_apdu_data + header,
|
|
kd[GPG_KEY_FOR_DECRYPTION].data);
|
|
//chopstx_setcancelstate (cs);
|
|
}
|
|
else
|
|
{
|
|
DEBUG_INFO ("unknown algo.");
|
|
GPG_FUNCTION_NOT_SUPPORTED ();
|
|
return;
|
|
}
|
|
|
|
if (r == 0)
|
|
res_APDU_size = result_len;
|
|
}
|
|
|
|
if (r < 0)
|
|
{
|
|
DEBUG_INFO (" - ??");
|
|
DEBUG_BYTE (P1 (apdu));
|
|
DEBUG_INFO (" - ??");
|
|
DEBUG_BYTE (P2 (apdu));
|
|
GPG_ERROR ();
|
|
}
|
|
|
|
DEBUG_INFO ("PSO done.\r\n");
|
|
}
|
|
|
|
|
|
#define MAX_RSA_DIGEST_INFO_LEN 102 /* 40% */
|
|
static void
|
|
cmd_internal_authenticate (queue_t *ccid_comm)
|
|
{
|
|
int attr = gpg_get_algo_attr (GPG_KEY_FOR_AUTHENTICATION);
|
|
int pubkey_len = gpg_get_algo_attr_key_size (GPG_KEY_FOR_AUTHENTICATION,
|
|
GPG_KEY_PUBLIC);
|
|
int len = apdu.cmd_apdu_data_len;
|
|
int r = -1;
|
|
unsigned int result_len = 0;
|
|
int cs;
|
|
|
|
DEBUG_INFO (" - INTERNAL AUTHENTICATE\r\n");
|
|
|
|
if (P1 (apdu) != 0x00 || P2 (apdu) != 0x00)
|
|
{
|
|
DEBUG_INFO (" - ??");
|
|
DEBUG_BYTE (P1 (apdu));
|
|
DEBUG_INFO (" - ??");
|
|
DEBUG_BYTE (P2 (apdu));
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
DEBUG_SHORT (len);
|
|
if (!ac_check_status (AC_OTHER_AUTHORIZED))
|
|
{
|
|
DEBUG_INFO ("security error.");
|
|
GPG_SECURITY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
#ifdef ACKBTN_SUPPORT
|
|
if (gpg_do_get_uif (GPG_KEY_FOR_AUTHENTICATION))
|
|
eventflag_signal (ccid_comm, EV_EXEC_ACK_REQUIRED);
|
|
#else
|
|
(void)ccid_comm;
|
|
#endif
|
|
|
|
if (attr == ALGO_RSA2K || attr == ALGO_RSA4K)
|
|
{
|
|
if (len > MAX_RSA_DIGEST_INFO_LEN)
|
|
{
|
|
DEBUG_INFO ("input is too long.");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
result_len = pubkey_len;
|
|
r = rsa_sign (apdu.cmd_apdu_data, res_APDU, len,
|
|
&kd[GPG_KEY_FOR_AUTHENTICATION], pubkey_len);
|
|
}
|
|
else if (attr == ALGO_SECP256K1)
|
|
{
|
|
if (len != ECDSA_HASH_LEN)
|
|
{
|
|
DEBUG_INFO ("wrong hash length.");
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = ECDSA_SIGNATURE_LENGTH;
|
|
r = ecdsa_sign_p256k1 (apdu.cmd_apdu_data, res_APDU,
|
|
kd[GPG_KEY_FOR_AUTHENTICATION].data);
|
|
//chopstx_setcancelstate (cs);
|
|
}
|
|
else if (attr == ALGO_ED25519)
|
|
{
|
|
uint32_t output[ED25519_SIGNATURE_LENGTH/4]; /* Require 4-byte alignment. */
|
|
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = ED25519_SIGNATURE_LENGTH;
|
|
r = eddsa_sign_25519 (apdu.cmd_apdu_data, len, output,
|
|
kd[GPG_KEY_FOR_AUTHENTICATION].data,
|
|
kd[GPG_KEY_FOR_AUTHENTICATION].data+32,
|
|
kd[GPG_KEY_FOR_AUTHENTICATION].pubkey);
|
|
//chopstx_setcancelstate (cs);
|
|
memcpy (res_APDU, output, ED25519_SIGNATURE_LENGTH);
|
|
}
|
|
else if (attr == ALGO_ED448)
|
|
{
|
|
//cs = chopstx_setcancelstate (0);
|
|
result_len = ED448_SIGNATURE_LENGTH;
|
|
r = ed448_sign (res_APDU, apdu.cmd_apdu_data, len,
|
|
kd[GPG_KEY_FOR_AUTHENTICATION].data,
|
|
kd[GPG_KEY_FOR_AUTHENTICATION].data+57,
|
|
kd[GPG_KEY_FOR_AUTHENTICATION].pubkey);
|
|
//chopstx_setcancelstate (cs);
|
|
}
|
|
|
|
if (r == 0)
|
|
res_APDU_size = result_len;
|
|
else
|
|
GPG_ERROR ();
|
|
|
|
DEBUG_INFO ("INTERNAL AUTHENTICATE done.\r\n");
|
|
}
|
|
|
|
|
|
#define MBD_OPRATION_WRITE 0
|
|
#define MBD_OPRATION_UPDATE 1
|
|
|
|
static void
|
|
modify_binary (uint8_t op, uint8_t p1, uint8_t p2, int len)
|
|
{
|
|
uint8_t file_id;
|
|
uint16_t offset;
|
|
int is_short_EF = (p1 & 0x80) != 0;
|
|
int r;
|
|
|
|
if (!ac_check_status (AC_ADMIN_AUTHORIZED))
|
|
{
|
|
DEBUG_INFO ("security error.");
|
|
GPG_SECURITY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
if (is_short_EF)
|
|
file_id = (p1 & 0x1f);
|
|
else
|
|
file_id = file_selection - FILE_EF_SERIAL_NO + FILEID_SERIAL_NO;
|
|
|
|
if (!FILEID_CH_CERTIFICATE_IS_VALID && file_id == FILEID_CH_CERTIFICATE)
|
|
{
|
|
GPG_NO_FILE ();
|
|
return;
|
|
}
|
|
|
|
if (op == MBD_OPRATION_UPDATE && file_id != FILEID_CH_CERTIFICATE)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
if (file_id > FILEID_CH_CERTIFICATE)
|
|
{
|
|
GPG_NO_FILE ();
|
|
return;
|
|
}
|
|
|
|
if (is_short_EF)
|
|
{
|
|
file_selection = file_id - FILEID_SERIAL_NO + FILE_EF_SERIAL_NO;
|
|
offset = p2;
|
|
|
|
if (op == MBD_OPRATION_UPDATE)
|
|
{
|
|
r = flash_erase_binary (file_id);
|
|
if (r < 0)
|
|
{
|
|
DEBUG_INFO ("memory error.\r\n");
|
|
GPG_MEMORY_FAILURE ();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
offset = (p1 << 8) | p2;
|
|
|
|
DEBUG_SHORT (len);
|
|
DEBUG_SHORT (offset);
|
|
|
|
if (file_id == FILEID_CH_CERTIFICATE && (len&1))
|
|
/* It's OK the size of last write is odd. */
|
|
apdu.cmd_apdu_data[len++] = 0xff;
|
|
|
|
r = flash_write_binary (file_id, apdu.cmd_apdu_data, len, offset);
|
|
if (r < 0)
|
|
{
|
|
DEBUG_INFO ("memory error.\r\n");
|
|
GPG_MEMORY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
#ifdef FLASH_UPGRADE_SUPPORT
|
|
if (file_id >= FILEID_UPDATE_KEY_0 && file_id <= FILEID_UPDATE_KEY_3
|
|
&& len == 0 && offset == 0)
|
|
{
|
|
int i;
|
|
const uint8_t *p;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
{
|
|
p = gpg_get_firmware_update_key (i);
|
|
if (p[0] != 0x00 || p[1] != 0x00) /* still valid */
|
|
break;
|
|
}
|
|
|
|
if (i == 4) /* all update keys are removed */
|
|
{
|
|
p = gpg_get_firmware_update_key (0);
|
|
flash_erase_page ((uintptr_t)p);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
GPG_SUCCESS ();
|
|
}
|
|
|
|
|
|
|
|
#if defined(CERTDO_SUPPORT)
|
|
static void
|
|
cmd_update_binary (queue_t *ccid_comm)
|
|
{
|
|
int len = apdu.cmd_apdu_data_len;
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - UPDATE BINARY\r\n");
|
|
modify_binary (MBD_OPRATION_UPDATE, P1 (apdu), P2 (apdu), len);
|
|
DEBUG_INFO ("UPDATE BINARY done.\r\n");
|
|
}
|
|
#endif
|
|
|
|
|
|
static void
|
|
cmd_write_binary (queue_t *ccid_comm)
|
|
{
|
|
int len = apdu.cmd_apdu_data_len;
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - WRITE BINARY\r\n");
|
|
modify_binary (MBD_OPRATION_WRITE, P1 (apdu), P2 (apdu), len);
|
|
DEBUG_INFO ("WRITE BINARY done.\r\n");
|
|
}
|
|
|
|
|
|
#ifdef FLASH_UPGRADE_SUPPORT
|
|
static void
|
|
cmd_external_authenticate (queue_t *ccid_comm)
|
|
{
|
|
const uint8_t *pubkey;
|
|
const uint8_t *signature = apdu.cmd_apdu_data;
|
|
int len = apdu.cmd_apdu_data_len;
|
|
uint8_t keyno = P2 (apdu);
|
|
int r;
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - EXTERNAL AUTHENTICATE\r\n");
|
|
|
|
if (keyno >= 4)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
pubkey = gpg_get_firmware_update_key (keyno);
|
|
if (len != 256
|
|
|| (pubkey[0] == 0xff && pubkey[1] == 0xff) /* not registered */
|
|
|| (pubkey[0] == 0x00 && pubkey[1] == 0x00) /* removed */)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
|
|
r = rsa_verify (pubkey, FIRMWARE_UPDATE_KEY_CONTENT_LEN,
|
|
challenge, signature);
|
|
random_bytes_free (challenge);
|
|
challenge = NULL;
|
|
|
|
if (r < 0)
|
|
{
|
|
GPG_SECURITY_FAILURE ();
|
|
return;
|
|
}
|
|
|
|
//eventflag_signal (openpgp_comm, EV_EXIT); /* signal to self. */
|
|
set_res_sw (0xff, 0xff);
|
|
DEBUG_INFO ("EXTERNAL AUTHENTICATE done.\r\n");
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
cmd_get_challenge (queue_t *ccid_comm)
|
|
{
|
|
int len = apdu.expected_res_size;
|
|
|
|
(void)ccid_comm;
|
|
DEBUG_INFO (" - GET CHALLENGE\r\n");
|
|
|
|
if (len > CHALLENGE_LEN)
|
|
{
|
|
GPG_CONDITION_NOT_SATISFIED ();
|
|
return;
|
|
}
|
|
else if (len == 0)
|
|
/* Le is not specified. Return full-sized challenge by GET_RESPONSE. */
|
|
len = CHALLENGE_LEN;
|
|
|
|
if (challenge)
|
|
random_bytes_free (challenge);
|
|
|
|
#ifdef ACKBTN_SUPPORT
|
|
if (gpg_do_get_uif (GPG_KEY_FOR_SIGNING)
|
|
|| gpg_do_get_uif (GPG_KEY_FOR_DECRYPTION)
|
|
|| gpg_do_get_uif (GPG_KEY_FOR_AUTHENTICATION))
|
|
eventflag_signal (ccid_comm, EV_EXEC_ACK_REQUIRED);
|
|
#endif
|
|
|
|
challenge = random_bytes_get ();
|
|
memcpy (res_APDU, challenge, len);
|
|
res_APDU_size = len;
|
|
GPG_SUCCESS ();
|
|
DEBUG_INFO ("GET CHALLENGE done.\r\n");
|
|
}
|
|
|
|
|
|
#ifdef LIFE_CYCLE_MANAGEMENT_SUPPORT
|
|
static void
|
|
cmd_activate_file (queue_t *ccid_comm)
|
|
{
|
|
(void)ccid_comm;
|
|
if (file_selection != FILE_CARD_TERMINATED)
|
|
{
|
|
GPG_NO_RECORD ();
|
|
return;
|
|
}
|
|
|
|
flash_activate ();
|
|
file_selection = FILE_DF_OPENPGP;
|
|
GPG_SUCCESS ();
|
|
}
|
|
|
|
static void
|
|
cmd_terminate_df (queue_t *ccid_comm)
|
|
{
|
|
const uint8_t *ks_pw3;
|
|
uint8_t p1 = P1 (apdu);
|
|
uint8_t p2 = P2 (apdu);
|
|
|
|
(void)ccid_comm;
|
|
if (file_selection != FILE_DF_OPENPGP)
|
|
{
|
|
GPG_NO_RECORD ();
|
|
return;
|
|
}
|
|
|
|
if (p1 != 0 || p2 != 0)
|
|
{
|
|
GPG_BAD_P1_P2();
|
|
return;
|
|
}
|
|
|
|
if (apdu.cmd_apdu_data_len != 0)
|
|
{
|
|
GPG_WRONG_LENGTH();
|
|
return;
|
|
}
|
|
|
|
ks_pw3 = gpg_do_read_simple (NR_DO_KEYSTRING_PW3);
|
|
|
|
if (!ac_check_status (AC_ADMIN_AUTHORIZED)
|
|
&& !((ks_pw3 && gpg_pw_locked (PW_ERR_PW3))
|
|
|| (ks_pw3 == NULL && gpg_pw_locked (PW_ERR_PW1))))
|
|
{
|
|
/* Only allow the case admin authorized, or, admin pass is locked. */
|
|
GPG_SECURITY_FAILURE();
|
|
return;
|
|
}
|
|
|
|
ac_reset_admin ();
|
|
ac_reset_pso_cds ();
|
|
ac_reset_other ();
|
|
gpg_do_terminate ();
|
|
flash_terminate ();
|
|
file_selection = FILE_CARD_TERMINATED;
|
|
GPG_SUCCESS ();
|
|
}
|
|
#endif
|
|
|
|
|
|
struct command
|
|
{
|
|
uint8_t command;
|
|
void (*cmd_handler) ();
|
|
};
|
|
|
|
const struct command cmds[] = {
|
|
{ INS_VERIFY, cmd_verify },
|
|
{ INS_CHANGE_REFERENCE_DATA, cmd_change_password },
|
|
{ INS_PSO, cmd_pso },
|
|
{ INS_RESET_RETRY_COUNTER, cmd_reset_user_password },
|
|
#ifdef LIFE_CYCLE_MANAGEMENT_SUPPORT
|
|
{ INS_ACTIVATE_FILE, cmd_activate_file },
|
|
#endif
|
|
{ INS_PGP_GENERATE_ASYMMETRIC_KEY_PAIR, cmd_pgp_gakp },
|
|
#ifdef FLASH_UPGRADE_SUPPORT
|
|
{ INS_EXTERNAL_AUTHENTICATE, /* Not in OpenPGP card protocol */
|
|
cmd_external_authenticate },
|
|
#endif
|
|
{ INS_GET_CHALLENGE, cmd_get_challenge }, /* Not in OpenPGP card protocol */
|
|
{ INS_INTERNAL_AUTHENTICATE, cmd_internal_authenticate },
|
|
{ INS_SELECT_FILE, cmd_select_file },
|
|
{ INS_READ_BINARY, cmd_read_binary }, /* Not in OpenPGP card protocol */
|
|
{ INS_READ_BINARY_ODD, cmd_read_binary }, /* Not in OpenPGP card protocol */
|
|
{ INS_GET_DATA, cmd_get_data },
|
|
{ INS_WRITE_BINARY, cmd_write_binary}, /* Not in OpenPGP card protocol */
|
|
#if defined(CERTDO_SUPPORT)
|
|
{ INS_UPDATE_BINARY, cmd_update_binary }, /* Not in OpenPGP card protocol */
|
|
#endif
|
|
{ INS_PUT_DATA, cmd_put_data },
|
|
{ INS_PUT_DATA_ODD, cmd_put_data },
|
|
#ifdef LIFE_CYCLE_MANAGEMENT_SUPPORT
|
|
{ INS_TERMINATE_DF, cmd_terminate_df},
|
|
#endif
|
|
};
|
|
#define NUM_CMDS ((int)(sizeof (cmds) / sizeof (struct command)))
|
|
|
|
int openpgp_process_apdu()
|
|
{
|
|
int i;
|
|
uint8_t cmd = INS (apdu);
|
|
|
|
for (i = 0; i < NUM_CMDS; i++)
|
|
if (cmds[i].command == cmd)
|
|
break;
|
|
|
|
if (i < NUM_CMDS)
|
|
{
|
|
if (file_selection == FILE_CARD_TERMINATED
|
|
&& cmd != INS_SELECT_FILE && cmd != INS_ACTIVATE_FILE
|
|
&& cmd != INS_GET_CHALLENGE && cmd != INS_EXTERNAL_AUTHENTICATE)
|
|
GPG_APPLICATION_TERMINATED ();
|
|
else if (selected_applet == NULL
|
|
&& cmd != INS_SELECT_FILE && cmd != INS_ACTIVATE_FILE
|
|
&& cmd != INS_GET_CHALLENGE && cmd != INS_EXTERNAL_AUTHENTICATE
|
|
&& cmd != INS_WRITE_BINARY && cmd != INS_UPDATE_BINARY
|
|
&& cmd != INS_READ_BINARY && cmd != INS_READ_BINARY_ODD)
|
|
GPG_NO_RECORD ();
|
|
else
|
|
{
|
|
cmds[i].cmd_handler ();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DEBUG_INFO (" - ??");
|
|
DEBUG_BYTE (cmd);
|
|
GPG_NO_INS ();
|
|
}
|
|
}
|
|
|