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Document mbedtls_calloc zeroization

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Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek
2023-04-25 04:48:15 -04:00
parent 7f773b2138
commit b9f8974c6c
2 changed files with 2 additions and 1 deletions
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2
include/mbedtls/mbedtls_config.h
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@@ -3680,7 +3680,7 @@
/* Platform options */ /* Platform options */
//#define MBEDTLS_PLATFORM_STD_MEM_HDR <stdlib.h> /**< Header to include if MBEDTLS_PLATFORM_NO_STD_FUNCTIONS is defined. Don't define if no header is needed. */ //#define MBEDTLS_PLATFORM_STD_MEM_HDR <stdlib.h> /**< Header to include if MBEDTLS_PLATFORM_NO_STD_FUNCTIONS is defined. Don't define if no header is needed. */
//#define MBEDTLS_PLATFORM_STD_CALLOC calloc /**< Default allocator to use, can be undefined */ //#define MBEDTLS_PLATFORM_STD_CALLOC calloc /**< Default allocator to use, can be undefined. Please note that it should zeroize the buffer after allocation. */
//#define MBEDTLS_PLATFORM_STD_FREE free /**< Default free to use, can be undefined */ //#define MBEDTLS_PLATFORM_STD_FREE free /**< Default free to use, can be undefined */
//#define MBEDTLS_PLATFORM_STD_SETBUF setbuf /**< Default setbuf to use, can be undefined */ //#define MBEDTLS_PLATFORM_STD_SETBUF setbuf /**< Default setbuf to use, can be undefined */
//#define MBEDTLS_PLATFORM_STD_EXIT exit /**< Default exit to use, can be undefined */ //#define MBEDTLS_PLATFORM_STD_EXIT exit /**< Default exit to use, can be undefined */

1
include/mbedtls/platform.h
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@@ -135,6 +135,7 @@ extern "C" {
/* /*
* The function pointers for calloc and free. * The function pointers for calloc and free.
* mbedtls_calloc will allocate and zeroize the buffer.
*/ */
#if defined(MBEDTLS_PLATFORM_MEMORY) #if defined(MBEDTLS_PLATFORM_MEMORY)
#if defined(MBEDTLS_PLATFORM_FREE_MACRO) && \ #if defined(MBEDTLS_PLATFORM_FREE_MACRO) && \