-/* crypto/mem_clr.c -*- mode:C; c-file-style: "eay" -*- */
/*
* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
* 2002.
#include <string.h>
#include <openssl/crypto.h>
+extern unsigned char cleanse_ctr;
unsigned char cleanse_ctr = 0;
void OPENSSL_cleanse(void *ptr, size_t len)
{
unsigned char *p = ptr;
size_t loop = len, ctr = cleanse_ctr;
+
+ if (ptr == NULL)
+ return;
+
while (loop--) {
*(p++) = (unsigned char)ctr;
ctr += (17 + ((size_t)p & 0xF));