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fix(mbedtls): bound public-key coordinate copy in esp ecp_check_pubkey

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This commit is contained in:
Ashish Sharma
2026-07-22 18:40:14 +08:00
parent d9a5f9ee1c
commit 23393e49bd
1 changed files with 4 additions and 3 deletions
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7
components/mbedtls/port/ecc/ecc_alt.c
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@@ -4,7 +4,6 @@
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include "soc/hwcrypto_periph.h"
#include "ecc_impl.h"
#include "hal/ecc_ll.h"
@@ -118,8 +117,10 @@ int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp,
mbedtls_platform_zeroize((void *)&point, sizeof(ecc_point_t));
memcpy(&point.x, pt->MBEDTLS_PRIVATE(X).MBEDTLS_PRIVATE(p), mbedtls_mpi_size(&pt->MBEDTLS_PRIVATE(X)));
memcpy(&point.y, pt->MBEDTLS_PRIVATE(Y).MBEDTLS_PRIVATE(p), mbedtls_mpi_size(&pt->MBEDTLS_PRIVATE(Y)));
if (mbedtls_mpi_write_binary_le(&pt->MBEDTLS_PRIVATE(X), point.x, sizeof(point.x)) != 0 ||
mbedtls_mpi_write_binary_le(&pt->MBEDTLS_PRIVATE(Y), point.y, sizeof(point.y)) != 0) {
return MBEDTLS_ERR_ECP_INVALID_KEY;
}
point.len = grp->pbits / 8;