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esp32c2: Remove assert check on len for SHA calculation

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Sachin Parekh 2022-03-10 11:11:11 +05:30 committed by Mahavir Jain
parent 2c725264f7
commit 7dd62bb044
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1 changed files with 5 additions and 1 deletions
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components/bootloader_support/src/esp32c2/bootloader_sha.c
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@ -24,7 +24,11 @@ bootloader_sha256_handle_t bootloader_sha256_start()
void bootloader_sha256_data(bootloader_sha256_handle_t handle, const void *data, size_t data_len) void bootloader_sha256_data(bootloader_sha256_handle_t handle, const void *data, size_t data_len)
{ {
assert(handle != NULL); assert(handle != NULL);
assert(data_len % 4 == 0); /* C2 secure boot key field consists of 1 byte of curve identifier and 64 bytes of ECDSA public key.
* While verifying the signature block, we need to calculate the SHA of this key field which is of 65 bytes.
* ets_sha_update handles it cleanly so we can safely remove the check:
* assert(data_len % 4) == 0
*/
ets_sha_update(&ctx, data, data_len, false); ets_sha_update(&ctx, data, data_len, false);
} }