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When requested, verify app digest before running

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Mikael Ågren 2025-03-18 09:16:58 +01:00 committed by Michael Cardell Widerkrantz
parent 6067d130a2
commit 6ad32f7317
No known key found for this signature in database
GPG Key ID: D3DB3DDF57E704E5
2 changed files with 18 additions and 5 deletions
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12
hw/application_fpga/fw/reset_test/main.c
View File

@ -88,8 +88,8 @@ int main(void)
break;
case '4': {
uint8_t string[] = "83da11b65f9c3721879bc4d9cffa6eac236"
"8dcd9562aedde4002e6108ac939b3";
uint8_t string[] = "0123456789abcdef0123456789abcdef012"
"3456789abcdef0123456789abcdef";
rst.type = START_CLIENT_VER;
hex_string_to_bytes(string, (uint8_t *)&rst.app_digest,
sizeof(rst.app_digest));
@ -97,10 +97,12 @@ int main(void)
} break;
case '5': {
uint8_t string[] = "ef1337a922945fd87683b71ed275e02af44"
"b3489057a29d14fd78daff8b73a28";
uint8_t tkeylibs_example_app_digest[] =
"96bb4c90603dbbbe09b9a1d7259b5e9e61bedd89a897105c30"
"c9d4bf66a98d97";
rst.type = START_CLIENT_VER;
hex_string_to_bytes(string, (uint8_t *)&rst.app_digest,
hex_string_to_bytes(tkeylibs_example_app_digest,
(uint8_t *)&rst.app_digest,
sizeof(rst.app_digest));
syscall(TK1_SYSCALL_RESET, (uint32_t)&rst, 0, 0);
} break;

11
hw/application_fpga/fw/tk1/main.c
View File

@ -612,6 +612,17 @@ int main(void)
break;
case FW_STATE_START:
if (ctx.ver_digest != NULL) {
print_digest(ctx.digest);
if (!memeq(ctx.digest, (void*)ctx.ver_digest, sizeof(ctx.digest))) {
debug_puts("Digests do not match\n");
state = FW_STATE_FAIL;
break;
}
}
memset((void*)resetinfo->app_digest, 0, sizeof(resetinfo->app_digest));
jump_to_app();
break; // Not reached