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wolfBoot
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Code Issues Releases Wiki Activity

fix elf image digest comparison timing 

F/730
pull/725/head
Daniele Lacamera 2026-03-16 10:11:08 +01:00
parent 953c9bef29
commit d3c47d19a8
1 changed files with 1 additions and 1 deletions
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2
src/image.c
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@ -1989,7 +1989,7 @@ int wolfBoot_check_flash_image_elf(uint8_t part, unsigned long* entry_out)
/* Finalize SHA calculation */
final_hash(&ctx, calc_digest);
if (memcmp(calc_digest, exp_digest, WOLFBOOT_SHA_DIGEST_SIZE) != 0) {
if (!image_CT_compare(exp_digest, calc_digest, WOLFBOOT_SHA_DIGEST_SIZE)) {
wolfBoot_printf("ELF: [CHECK] SHA verification FAILED\n");
wolfBoot_printf(
"ELF: [CHECK] Expected %02x%02x%02x%02x%02x%02x%02x%02x\n",