view dbhelpers.c @ 1517:7c7c5326ad73

clean up some default options - move hmac-sha2-512, hmac-md5, twofish_ctr to sysoptions.h, off by default - try and improve text for KEX methods
author Matt Johnston <matt@ucc.asn.au>
date Sun, 18 Feb 2018 22:27:51 +0800
parents 3017bc7d6238
children 4b1a807a3188
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#include "dbhelpers.h"
#include "includes.h"

/* Erase data */
void m_burn(void *data, unsigned int len) {

#if defined(HAVE_MEMSET_S)
	memset_s(data, len, 0x0, len);
#elif defined(HAVE_EXPLICIT_BZERO)
	explicit_bzero(data, len);
#else
/* Based on the method in David Wheeler's
 * "Secure Programming for Linux and Unix HOWTO". May not be safe
 * against link-time optimisation. */
	volatile char *p = data;

	if (data == NULL)
		return;
	while (len--) {
		*p++ = 0x0;
	}
#endif
}