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Introduce polarssl_zeroize() instead of memset() for zeroization

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This commit is contained in:
Paul Bakker 2014-06-13 17:20:13 +02:00
parent bbcb1ce703
commit 3461772559
36 changed files with 325 additions and 129 deletions
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6
library/pk_wrap.c
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@ -52,6 +52,11 @@
#define polarssl_free free
#endif
/* Implementation that should never be optimized out by the compiler */
static void polarssl_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
}
#if defined(POLARSSL_RSA_C)
static int rsa_can_do( pk_type_t type )
{
@ -426,6 +431,7 @@ static void *rsa_alt_alloc_wrap( void )
static void rsa_alt_free_wrap( void *ctx )
{
polarssl_zeroize( ctx, sizeof( rsa_alt_context ) );
polarssl_free( ctx );
}