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esp32c6: Remove assert check on len for SHA calculation

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This commit is contained in:
Sachin Parekh 2023-01-09 22:31:10 +05:30
parent 2c3fe88e32
commit a3c341384f
1 changed files with 6 additions and 2 deletions
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8
components/bootloader_support/src/esp32c6/bootloader_sha.c
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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -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)
{
assert(handle != NULL);
assert(data_len % 4 == 0);
/* C6 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);
}