Commit cd5ab329 authored by Andy Polyakov's avatar Andy Polyakov
Browse files

Optimized OPENSSL_cleanse [from HEAD].

parent 80106dc5

crypto/mem_clr.c

+7 −5
Original line number Diff line number Diff line
@@ -64,12 +64,14 @@ unsigned char cleanse_ctr = 0; 
void OPENSSL_cleanse(void *ptr, size_t len)

	{

	unsigned char *p = ptr;

	size_t loop = len;

	size_t loop = len, ctr = cleanse_ctr;

	while(loop--)

		{

		*(p++) = cleanse_ctr;

		cleanse_ctr += (17 + (unsigned char)((unsigned long)p & 0xF));

		*(p++) = (unsigned char)ctr;

		ctr += (17 + ((size_t)p & 0xF));

		}

	if(memchr(ptr, cleanse_ctr, len))

		cleanse_ctr += 63;

	p=memchr(ptr, (unsigned char)ctr, len);

	if(p)

		ctr += (63 + (size_t)p);

	cleanse_ctr = (unsigned char)ctr;

	}