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wolfBoot
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Support for EXT_FLASH and NO_XIP for "self_hash".

pull/345/head
David Garske 2023-08-16 12:11:14 -07:00 committed by Daniele Lacamera
parent b05c7ab980
commit 5454a9728e
1 changed files with 20 additions and 6 deletions
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26
src/image.c
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@ -247,7 +247,7 @@ static int RsaDecodeSignature(uint8_t** pInput, int inputSz)
}
#endif /* !NO_RSA_SIG_ENCODING */
#ifdef WOLFBOOT_TPM
#if defined(WOLFBOOT_TPM) && !defined(WOLFBOOT_TPM_KEYSTORE)
/* RSA PKCSV15 un-padding with RSA_BLOCK_TYPE_1 (public) */
/* UnPad plaintext, set start to *output, return length of plaintext or error */
static int RsaUnPad(const byte *pkcsBlock, int pkcsBlockLen, byte **output)
@ -270,7 +270,7 @@ static int RsaUnPad(const byte *pkcsBlock, int pkcsBlockLen, byte **output)
ret = pkcsBlockLen - i;
return ret;
}
#endif /* WOLFBOOT_TPM */
#endif /* WOLFBOOT_TPM && WOLFBOOT_TPM_KEYSTORE */
static void wolfBoot_verify_signature(uint8_t key_slot,
struct wolfBoot_image *img, uint8_t *sig)
@ -446,7 +446,7 @@ static uint8_t *get_img_hdr(struct wolfBoot_image *img)
#ifdef WOLFBOOT_MEASURED_BOOT
static int self_sha256(uint8_t *hash)
{
void *p = (void*)WOLFBOOT_PARTITION_BOOT_ADDRESS;
uintptr_t p = (uintptr_t)WOLFBOOT_PARTITION_BOOT_ADDRESS;
uint32_t sz = (uint32_t)WOLFBOOT_PARTITION_SIZE;
uint32_t blksz, position = 0;
wc_Sha256 sha256_ctx;
@ -456,7 +456,14 @@ static int self_sha256(uint8_t *hash)
blksz = WOLFBOOT_SHA_BLOCK_SIZE;
if (position + blksz > sz)
blksz = sz - position;
wc_Sha256Update(&sha256_ctx, p, blksz);
#if defined(EXT_FLASH) && defined(NO_XIP)
rc = ext_flash_read(p, ext_hash_block, WOLFBOOT_SHA_BLOCK_SIZE);
if (rc != WOLFBOOT_SHA_BLOCK_SIZE)
return -1;
wc_Sha256Update(&sha256_ctx, ext_hash_block, blksz);
#else
wc_Sha256Update(&sha256_ctx, (uint8_t*)p, blksz);
#endif
position += blksz;
p += blksz;
} while (position < sz);
@ -537,7 +544,7 @@ static void key_sha256(uint8_t key_slot, uint8_t *hash)
#ifdef WOLFBOOT_MEASURED_BOOT
static int self_sha384(uint8_t *hash)
{
void *p = (void*)WOLFBOOT_PARTITION_BOOT_ADDRESS;
uintptr_t p = (uintptr_t)WOLFBOOT_PARTITION_BOOT_ADDRESS;
uint32_t sz = (uint32_t)WOLFBOOT_PARTITION_SIZE;
uint32_t blksz, position = 0;
wc_Sha384 sha384_ctx;
@ -547,7 +554,14 @@ static int self_sha384(uint8_t *hash)
blksz = WOLFBOOT_SHA_BLOCK_SIZE;
if (position + blksz > sz)
blksz = sz - position;
wc_Sha384Update(&sha384_ctx, p, blksz);
#if defined(EXT_FLASH) && defined(NO_XIP)
rc = ext_flash_read(p, ext_hash_block, WOLFBOOT_SHA_BLOCK_SIZE);
if (rc != WOLFBOOT_SHA_BLOCK_SIZE)
return -1;
wc_Sha384Update(&sha384_ctx, ext_hash_block, blksz);
#else
wc_Sha384Update(&sha384_ctx, (uint8_t*)p, blksz);
#endif
position += blksz;
p += blksz;
} while (position < sz);