generic-library/openssl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Optimize OPENSSL_cleanse [from HEAD].

Browse Source
This commit is contained in:
Andy Polyakov
2007-06-20 17:37:09 +00:00
parent 71fc9b37ae
commit 649ab2dcfa
1 changed files with 6 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
crypto/mem_clr.c
View File

@@ -64,12 +64,13 @@ unsigned char cleanse_ctr = 0;
void OPENSSL_cleanse(void *ptr, size_t len) void OPENSSL_cleanse(void *ptr, size_t len)
{ {
unsigned char *p = ptr; unsigned char *p = ptr;
size_t loop = len; size_t loop = len, ctr = cleanse_ctr;
while(loop--) while(loop--)
{ {
*(p++) = cleanse_ctr; *(p++) = (unsigned char)ctr;
cleanse_ctr += (17 + (unsigned char)((unsigned long)p & 0xF)); ctr += (17 + ((size_t)p & 0xF));
} }
if(memchr(ptr, cleanse_ctr, len)) if(p=memchr(ptr, (unsigned char)ctr, len))
cleanse_ctr += 63; ctr += (63 + (size_t)p);
cleanse_ctr = (unsigned char)ctr;
} }