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PPP: use mbed TLS sanitize functions if available

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mbed TLS offers sanitize functions to zero-ise memory containing
cryptographic keys, use them if built with external mbed TLS library.
This commit is contained in:
Sylvain Rochet
2016-05-08 21:58:56 +02:00
parent 5df4f70a96
commit 33fc20cca2
7 changed files with 67 additions and 0 deletions
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20
src/include/netif/ppp/pppcrypt.h
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@@ -51,31 +51,41 @@
#include "netif/ppp/polarssl/md4.h"
#define lwip_md4_context md4_context
#define lwip_md4_init(context)
#define lwip_md4_starts md4_starts
#define lwip_md4_update md4_update
#define lwip_md4_finish md4_finish
#define lwip_md4_free(context)
#include "netif/ppp/polarssl/md5.h"
#define lwip_md5_context md5_context
#define lwip_md5_init(context)
#define lwip_md5_starts md5_starts
#define lwip_md5_update md5_update
#define lwip_md5_finish md5_finish
#define lwip_md5_free(context)
#include "netif/ppp/polarssl/sha1.h"
#define lwip_sha1_context sha1_context
#define lwip_sha1_init(context)
#define lwip_sha1_starts sha1_starts
#define lwip_sha1_update sha1_update
#define lwip_sha1_finish sha1_finish
#define lwip_sha1_free(context)
#include "netif/ppp/polarssl/des.h"
#define lwip_des_context des_context
#define lwip_des_init(context)
#define lwip_des_setkey_enc des_setkey_enc
#define lwip_des_crypt_ecb des_crypt_ecb
#define lwip_des_free(context)
#include "netif/ppp/polarssl/arc4.h"
#define lwip_arc4_context arc4_context
#define lwip_arc4_init(context)
#define lwip_arc4_setup arc4_setup
#define lwip_arc4_crypt arc4_crypt
#define lwip_arc4_free(context)
#endif /* !LWIP_USE_EXTERNAL_MBEDTLS */
@@ -85,27 +95,37 @@
#if LWIP_USE_EXTERNAL_MBEDTLS
#define lwip_md4_context mbedtls_md4_context
#define lwip_md4_init mbedtls_md4_init
#define lwip_md4_starts mbedtls_md4_starts
#define lwip_md4_update mbedtls_md4_update
#define lwip_md4_finish mbedtls_md4_finish
#define lwip_md4_free mbedtls_md4_free
#define lwip_md5_context mbedtls_md5_context
#define lwip_md5_init mbedtls_md5_init
#define lwip_md5_starts mbedtls_md5_starts
#define lwip_md5_update mbedtls_md5_update
#define lwip_md5_finish mbedtls_md5_finish
#define lwip_md5_free mbedtls_md5_free
#define lwip_sha1_context mbedtls_sha1_context
#define lwip_sha1_init mbedtls_sha1_init
#define lwip_sha1_starts mbedtls_sha1_starts
#define lwip_sha1_update mbedtls_sha1_update
#define lwip_sha1_finish mbedtls_sha1_finish
#define lwip_sha1_free mbedtls_sha1_free
#define lwip_des_context mbedtls_des_context
#define lwip_des_init mbedtls_des_init
#define lwip_des_setkey_enc mbedtls_des_setkey_enc
#define lwip_des_crypt_ecb mbedtls_des_crypt_ecb
#define lwip_des_free mbedtls_des_free
#define lwip_arc4_context mbedtls_arc4_context
#define lwip_arc4_init mbedtls_arc4_init
#define lwip_arc4_setup mbedtls_arc4_setup
#define lwip_arc4_crypt(context, buffer, length) mbedtls_arc4_crypt(context, length, buffer, buffer)
#define lwip_arc4_free mbedtls_arc4_free
#endif /* LWIP_USE_EXTERNAL_MBEDTLS */