mirror of
https://github.com/polhenarejos/pico-hsm
synced 2026-05-30 09:51:20 +02:00
427 lines
17 KiB
C
427 lines
17 KiB
C
/*
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* This file is part of the Pico HSM distribution (https://github.com/polhenarejos/pico-hsm).
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* Copyright (c) 2022 Pol Henarejos.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public 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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#include "file.h"
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#include "tusb.h"
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#include "hsm2040.h"
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#include "sc_hsm.h"
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#include "libopensc/card-sc-hsm.h"
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#include <string.h>
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extern const uintptr_t end_data_pool;
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extern const uintptr_t start_data_pool;
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extern int flash_write_data_to_file(file_t *file, const uint8_t *data, uint16_t len);
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extern int flash_program_halfword (uintptr_t addr, uint16_t data);
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extern int flash_program_word (uintptr_t addr, uint32_t data);
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extern int flash_program_uintptr (uintptr_t addr, uintptr_t data);
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extern int flash_program_block(uintptr_t addr, const uint8_t *data, size_t len);
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extern uintptr_t flash_read_uintptr(uintptr_t addr);
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extern uint16_t flash_read_uint16(uintptr_t addr);
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extern uint8_t flash_read_uint8(uintptr_t addr);
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extern uint8_t *flash_read(uintptr_t addr);
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extern void low_flash_available();
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//puts FCI in the RAPDU
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void process_fci(const file_t *pe) {
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uint8_t *p = res_APDU;
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uint8_t buf[64];
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res_APDU_size = 0;
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res_APDU[res_APDU_size++] = 0x6f;
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res_APDU[res_APDU_size++] = 0x00; //computed later
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res_APDU[res_APDU_size++] = 0x81;
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res_APDU[res_APDU_size++] = 2;
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if (pe->data) {
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if ((pe->type & FILE_DATA_FUNC) == FILE_DATA_FUNC) {
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uint16_t len = ((int (*)(const file_t *, int))(pe->data))(pe, 0);
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res_APDU[res_APDU_size++] = (len >> 8) & 0xff;
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res_APDU[res_APDU_size++] = len & 0xff;
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}
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else {
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res_APDU[res_APDU_size++] = pe->data[1];
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res_APDU[res_APDU_size++] = pe->data[0];
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}
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}
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else {
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memset(res_APDU+res_APDU_size, 0, 2);
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res_APDU_size += 2;
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}
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res_APDU[res_APDU_size++] = 0x82;
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res_APDU[res_APDU_size++] = 1;
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res_APDU[res_APDU_size] = 0;
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if (pe->type == FILE_TYPE_INTERNAL_EF)
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res_APDU[res_APDU_size++] |= 0x08;
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else if (pe->type == FILE_TYPE_WORKING_EF)
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res_APDU[res_APDU_size++] |= pe->ef_structure & 0x7;
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else if (pe->type == FILE_TYPE_DF)
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res_APDU[res_APDU_size++] |= 0x38;
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res_APDU[res_APDU_size++] = 0x83;
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res_APDU[res_APDU_size++] = 2;
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put_uint16_t(pe->fid, res_APDU+res_APDU_size);
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res_APDU_size += 2;
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res_APDU[1] = res_APDU_size-2;
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}
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extern const uint8_t sc_hsm_aid[];
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extern int parse_token_info(const file_t *f, int mode);
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extern int parse_cvca(const file_t *f, int mode);
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file_t file_entries[] = {
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/* 0 */ { .fid = 0x3f00 , .parent = 0xff, .name = NULL, .type = FILE_TYPE_DF, .data = NULL, .ef_structure = 0, .acl = {0} }, // MF
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/* 1 */ { .fid = 0x2f00 , .parent = 0, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.DIR
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/* 2 */ { .fid = 0x2f01 , .parent = 0, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.ATR
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/* 3 */ { .fid = 0x2f02 , .parent = 0, .name = NULL, .type = FILE_TYPE_WORKING_EF | FILE_DATA_FUNC,.data = (uint8_t *)parse_cvca, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.GDO
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/* 4 */ { .fid = 0x2f03 , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF | FILE_DATA_FUNC,.data = (uint8_t *)parse_token_info, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.TokenInfo
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/* 5 */ { .fid = 0x5015 , .parent = 0, .name = NULL, .type = FILE_TYPE_DF, .data = NULL, .ef_structure = 0, .acl = {0} }, //DF.PKCS15
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/* 6 */ { .fid = 0x5031 , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.ODF
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/* 7 */ { .fid = 0x5032 , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.TokenInfo
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/* 8 */ { .fid = 0x5033 , .parent = 0, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.UnusedSpace
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/* 9 */ { .fid = 0x1081 , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //PIN (PIN1)
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/* 10 */ { .fid = 0x1082 , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //max retries PIN (PIN1)
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/* 11 */ { .fid = 0x1083 , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //retries PIN (PIN1)
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/* 12 */ { .fid = 0x1088 , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //PIN (SOPIN)
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/* 13 */ { .fid = 0x1089 , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //max retries PIN (SOPIN)
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/* 14 */ { .fid = 0x108A , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //retries PIN (SOPIN)
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/* 15 */ { .fid = EF_DKEK , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //DKEK
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/* 16 */ { .fid = EF_DEVOPS , .parent = 5, .name = NULL, .type = FILE_TYPE_INTERNAL_EF | FILE_DATA_FLASH, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0xff} }, //Device options
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/* 17 */ { .fid = EF_PRKDFS , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.PrKDFs
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/* 18 */ { .fid = EF_PUKDFS , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.PuKDFs
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/* 19 */ { .fid = EF_CDFS , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.CDFs
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/* 20 */ { .fid = EF_AODFS , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.AODFs
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/* 21 */ { .fid = EF_DODFS , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.DODFs
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/* 22 */ { .fid = EF_SKDFS , .parent = 5, .name = NULL, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} }, //EF.SKDFs
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///* 23 */ { .fid = 0x0000, .parent = 0, .name = openpgpcard_aid, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} },
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/* 24 */ { .fid = 0x0000, .parent = 5, .name = sc_hsm_aid, .type = FILE_TYPE_WORKING_EF, .data = NULL, .ef_structure = FILE_EF_TRANSPARENT, .acl = {0} },
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/* 25 */ { .fid = 0x0000, .parent = 0xff, .name = NULL, .type = FILE_TYPE_UNKNOWN, .data = NULL, .ef_structure = 0, .acl = {0} } //end
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};
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const file_t *MF = &file_entries[0];
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const file_t *file_last = &file_entries[sizeof(file_entries)/sizeof(file_t)-1];
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const file_t *file_openpgp = &file_entries[sizeof(file_entries)/sizeof(file_t)-3];
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const file_t *file_sc_hsm = &file_entries[sizeof(file_entries)/sizeof(file_t)-2];
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file_t *file_pin1 = NULL;
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file_t *file_retries_pin1 = NULL;
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file_t *file_sopin = NULL;
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file_t *file_retries_sopin = NULL;
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#define MAX_DYNAMIC_FILES 64
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uint16_t dynamic_files = 0;
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file_t dynamic_file[MAX_DYNAMIC_FILES];
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bool card_terminated = false;
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bool is_parent(const file_t *child, const file_t *parent) {
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if (child == parent)
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return true;
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if (child == MF)
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return false;
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return is_parent(&file_entries[child->parent], parent);
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}
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file_t *get_parent(file_t *f) {
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return &file_entries[f->parent];
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}
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file_t *search_by_name(uint8_t *name, uint16_t namelen) {
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for (file_t *p = file_entries; p != file_last; p++) {
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if (p->name && *p->name == apdu.cmd_apdu_data_len && memcmp(p->name+1, name, namelen) == 0) {
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return p;
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}
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}
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return NULL;
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}
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file_t *search_by_fid(const uint16_t fid, const file_t *parent, const uint8_t sp) {
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for (file_t *p = file_entries; p != file_last; p++) {
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if (p->fid != 0x0000 && p->fid == fid) {
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if (!parent || (parent && is_parent(p, parent))) {
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if (!sp || sp == SPECIFY_ANY || (((sp & SPECIFY_EF) && (p->type & FILE_TYPE_INTERNAL_EF)) || ((sp & SPECIFY_DF) && p->type == FILE_TYPE_DF)))
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return p;
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}
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}
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}
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return NULL;
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}
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uint8_t make_path_buf(const file_t *pe, uint8_t *buf, uint8_t buflen, const file_t *top) {
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if (!buflen)
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return 0;
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if (pe == top) //MF or relative DF
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return 0;
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put_uint16_t(pe->fid, buf);
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return make_path_buf(&file_entries[pe->parent], buf+2, buflen-2, top)+2;
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}
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uint8_t make_path(const file_t *pe, const file_t *top, uint8_t *path) {
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uint8_t buf[MAX_DEPTH*2], *p = path;
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put_uint16_t(pe->fid, buf);
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uint8_t depth = make_path_buf(&file_entries[pe->parent], buf+2, sizeof(buf)-2, top)+2;
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for (int d = depth-2; d >= 0; d -= 2) {
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memcpy(p, buf+d, 2);
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p += 2;
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}
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return depth;
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}
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file_t *search_by_path(const uint8_t *pe_path, uint8_t pathlen, const file_t *parent) {
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uint8_t path[MAX_DEPTH*2];
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if (pathlen > sizeof(path)) {
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return NULL;
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}
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for (file_t *p = file_entries; p != file_last; p++) {
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uint8_t depth = make_path(p, parent, path);
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if (pathlen == depth && memcmp(path, pe_path, depth) == 0)
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return p;
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}
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return NULL;
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}
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file_t *currentEF = NULL;
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file_t *currentDF = NULL;
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const file_t *selected_applet = NULL;
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bool isUserAuthenticated = false;
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bool authenticate_action(const file_t *ef, uint8_t op) {
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uint8_t acl = ef->acl[op];
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if (acl == 0x0)
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return true;
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else if (acl == 0xff)
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return false;
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else if (acl == 0x90 || acl & 0x9F == 0x10) {
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// PIN required.
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if(isUserAuthenticated) {
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return true;
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}
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else {
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return false;
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}
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}
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return false;
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}
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#include "libopensc/pkcs15.h"
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void initialize_chain(file_chain_t **chain) {
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file_chain_t *next;
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for (file_chain_t *f = *chain; f; f = next) {
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next = f->next;
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free(f);
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}
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*chain = NULL;
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}
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void initialize_flash(bool hard) {
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if (hard) {
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const uint8_t empty[8] = { 0 };
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flash_program_block(end_data_pool, empty, sizeof(empty));
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low_flash_available();
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}
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for (file_t *f = file_entries; f != file_last; f++) {
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if ((f->type & FILE_DATA_FLASH) == FILE_DATA_FLASH)
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f->data = NULL;
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}
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dynamic_files = 0;
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}
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void scan_flash() {
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initialize_flash(false); //soft initialization
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if (*(uintptr_t *)end_data_pool == 0xffffffff && *(uintptr_t *)(end_data_pool+sizeof(uintptr_t)) == 0xffffffff)
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{
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printf("First initialization (or corrupted!)\r\n");
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const uint8_t empty[8] = { 0 };
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flash_program_block(end_data_pool, empty, sizeof(empty));
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//low_flash_available();
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//wait_flash_finish();
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}
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printf("SCAN\r\n");
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uintptr_t base = flash_read_uintptr(end_data_pool);
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for (uintptr_t base = flash_read_uintptr(end_data_pool); base >= start_data_pool; base = flash_read_uintptr(base)) {
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if (base == 0x0) //all is empty
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break;
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uint16_t fid = flash_read_uint16(base+sizeof(uintptr_t)+sizeof(uintptr_t));
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printf("[%x] scan fid %x, len %d\r\n",base,fid,flash_read_uint16(base+sizeof(uintptr_t)+sizeof(uintptr_t)+sizeof(uint16_t)));
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file_t *file = (file_t *)search_by_fid(fid, NULL, SPECIFY_EF);
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if (!file) {
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file = file_new(fid);
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if ((fid & 0xff00) == (KEY_PREFIX << 8)) {
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//add_file_to_chain(file, &ef_kf);
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}
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else if ((fid & 0xff00) == (PRKD_PREFIX << 8)) {
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//add_file_to_chain(file, &ef_prkdf);
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}
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else if ((fid & 0xff00) == (CD_PREFIX << 8)) {
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//add_file_to_chain(file, &ef_cdf);
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}
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else if ((fid & 0xff00) == (EE_CERTIFICATE_PREFIX << 8)) {
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//add_file_to_chain(file, &ef_pukdf);
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}
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else {
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TU_LOG1("SCAN FOUND ORPHAN FILE: %x\r\n",fid);
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continue;
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}
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}
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file->data = (uint8_t *)(base+sizeof(uintptr_t)+sizeof(uintptr_t)+sizeof(uint16_t));
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if (flash_read_uintptr(base) == 0x0) {
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break;
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}
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}
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file_pin1 = search_by_fid(0x1081, NULL, SPECIFY_EF);
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if (file_pin1) {
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if (!file_pin1->data) {
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TU_LOG1("PIN1 is empty. Initializing with default password\r\n");
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const uint8_t empty[33] = { 0 };
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flash_write_data_to_file(file_pin1, empty, sizeof(empty));
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}
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}
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else {
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TU_LOG1("FATAL ERROR: PIN1 not found in memory!\r\n");
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}
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file_sopin = search_by_fid(0x1088, NULL, SPECIFY_EF);
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if (file_sopin) {
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if (!file_sopin->data) {
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TU_LOG1("SOPIN is empty. Initializing with default password\r\n");
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const uint8_t empty[33] = { 0 };
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flash_write_data_to_file(file_sopin, empty, sizeof(empty));
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}
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}
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else {
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TU_LOG1("FATAL ERROR: SOPIN not found in memory!\r\n");
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}
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file_retries_pin1 = search_by_fid(0x1083, NULL, SPECIFY_EF);
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if (file_retries_pin1) {
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if (!file_retries_pin1->data) {
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TU_LOG1("Retries PIN1 is empty. Initializing with default retriesr\n");
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const uint8_t retries = 3;
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flash_write_data_to_file(file_retries_pin1, &retries, sizeof(uint8_t));
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}
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}
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else {
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TU_LOG1("FATAL ERROR: Retries PIN1 not found in memory!\r\n");
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}
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file_retries_sopin = search_by_fid(0x108A, NULL, SPECIFY_EF);
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if (file_retries_sopin) {
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if (!file_retries_sopin->data) {
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TU_LOG1("Retries SOPIN is empty. Initializing with default retries\r\n");
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const uint8_t retries = 15;
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flash_write_data_to_file(file_retries_sopin, &retries, sizeof(uint8_t));
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}
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}
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else {
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TU_LOG1("FATAL ERROR: Retries SOPIN not found in memory!\r\n");
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}
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file_t *tf = NULL;
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tf = search_by_fid(0x1082, NULL, SPECIFY_EF);
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if (tf) {
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if (!tf->data) {
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TU_LOG1("Max retries PIN1 is empty. Initializing with default max retriesr\n");
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const uint8_t retries = 3;
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flash_write_data_to_file(tf, &retries, sizeof(uint8_t));
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}
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}
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else {
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TU_LOG1("FATAL ERROR: Max Retries PIN1 not found in memory!\r\n");
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}
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tf = search_by_fid(0x1089, NULL, SPECIFY_EF);
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if (tf) {
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if (!tf->data) {
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TU_LOG1("Max Retries SOPIN is empty. Initializing with default max retries\r\n");
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const uint8_t retries = 15;
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flash_write_data_to_file(tf, &retries, sizeof(uint8_t));
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}
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}
|
|
else {
|
|
TU_LOG1("FATAL ERROR: Retries SOPIN not found in memory!\r\n");
|
|
}
|
|
low_flash_available();
|
|
}
|
|
|
|
uint8_t *file_read(const uint8_t *addr) {
|
|
return flash_read((uintptr_t)addr);
|
|
}
|
|
uint16_t file_read_uint16(const uint8_t *addr) {
|
|
return flash_read_uint16((uintptr_t)addr);
|
|
}
|
|
uint8_t file_read_uint8(const uint8_t *addr) {
|
|
return flash_read_uint8((uintptr_t)addr);
|
|
}
|
|
|
|
file_t *search_dynamic_file(uint16_t fid) {
|
|
for (int i = 0; i < dynamic_files; i++) {
|
|
if (dynamic_file[i].fid == fid)
|
|
return &dynamic_file[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int delete_dynamic_file(file_t *f) {
|
|
for (int i = 0; i < dynamic_files; i++) {
|
|
if (dynamic_file[i].fid == f->fid) {
|
|
for (int j = i+1; j < dynamic_files; j++)
|
|
memcpy(&dynamic_file[j-1], &dynamic_file[j], sizeof(file_t));
|
|
dynamic_files--;
|
|
return HSM_OK;
|
|
}
|
|
}
|
|
return HSM_ERR_FILE_NOT_FOUND;
|
|
}
|
|
|
|
file_t *file_new(uint16_t fid) {
|
|
file_t *f;
|
|
if ((f = search_dynamic_file(fid)))
|
|
return f;
|
|
if (dynamic_files == MAX_DYNAMIC_FILES)
|
|
return NULL;
|
|
f = &dynamic_file[dynamic_files];
|
|
dynamic_files++;
|
|
file_t file = {
|
|
.fid = fid,
|
|
.parent = 5,
|
|
.name = NULL,
|
|
.type = FILE_TYPE_WORKING_EF,
|
|
.ef_structure = FILE_EF_TRANSPARENT,
|
|
.data = NULL,
|
|
.acl = {0}
|
|
};
|
|
memcpy(f, &file, sizeof(file_t));
|
|
//memset((uint8_t *)f->acl, 0x90, sizeof(f->acl));
|
|
return f;
|
|
}
|
|
|
|
file_chain_t *add_file_to_chain(file_t *file, file_chain_t **chain) {
|
|
if (search_file_chain(file->fid, *chain))
|
|
return NULL;
|
|
file_chain_t *fc = (file_chain_t *)malloc(sizeof(file_chain_t));
|
|
fc->file = file;
|
|
fc->next = *chain;
|
|
*chain = fc;
|
|
return fc;
|
|
}
|
|
|
|
file_t *search_file_chain(uint16_t fid, file_chain_t *chain) {
|
|
for (file_chain_t *fc = chain; fc; fc = fc->next) {
|
|
if (fid == fc->file->fid) {
|
|
return fc->file;
|
|
}
|
|
}
|
|
return NULL;
|
|
} |