/* * This file is part of the Trezor project, https://trezor.io/ * * Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com> * * This library is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library. If not, see <http://www.gnu.org/licenses/>. */ #ifndef __SIGNATURES_H__ #define __SIGNATURES_H__ #include <stdbool.h> #include <stdint.h> extern const uint32_t FIRMWARE_MAGIC_OLD; // TRZR extern const uint32_t FIRMWARE_MAGIC_NEW; // TRZF #define SIG_OK 0x5A3CA5C3 #define SIG_FAIL 0x00000000 bool firmware_present_old(void); int signatures_old_ok(void); // we use the same structure as T2 firmware header // but we don't use the field sig // and rather introduce fields sig1, sig2, sig3 // immediately following the chunk hashes typedef struct { uint32_t magic; uint32_t hdrlen; uint32_t expiry; uint32_t codelen; uint32_t version; uint32_t fix_version; uint8_t __reserved1[8]; uint8_t hashes[512]; uint8_t sig1[64]; uint8_t sig2[64]; uint8_t sig3[64]; uint8_t sigindex1; uint8_t sigindex2; uint8_t sigindex3; uint8_t __reserved2[220]; uint8_t __sigmask; uint8_t __sig[64]; } __attribute__((packed)) image_header; #define FW_CHUNK_SIZE 65536 bool firmware_present_new(void); void compute_firmware_fingerprint(const image_header *hdr, uint8_t hash[32]); int signatures_new_ok(const image_header *hdr, uint8_t store_fingerprint[32]); int check_firmware_hashes(const image_header *hdr); int mem_is_empty(const uint8_t *src, uint32_t len); #endif