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Revert ForceZero changes in favor of PR #1567.

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This commit is contained in:
David Garske
2018-05-18 05:29:09 -07:00
parent dad574edb8
commit cf70b1a013
1 changed files with 0 additions and 21 deletions
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21
wolfcrypt/src/misc.c
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@ -200,35 +200,14 @@ STATIC INLINE void ForceZero(const void* mem, word32 len)
{ {
volatile byte* z = (volatile byte*)mem; volatile byte* z = (volatile byte*)mem;
#ifndef NO_ALIGNED_FORCEZERO
#if defined(WOLFSSL_X86_64_BUILD) && defined(WORD64_AVAILABLE) #if defined(WOLFSSL_X86_64_BUILD) && defined(WORD64_AVAILABLE)
volatile word64* w; volatile word64* w;
/* align buffer */
while (len && ((size_t)z % sizeof(word64)) != 0) {
*z++ = 0; len--;
}
/* do aligned force zero */
for (w = (volatile word64*)z; len >= sizeof(*w); len -= sizeof(*w)) for (w = (volatile word64*)z; len >= sizeof(*w); len -= sizeof(*w))
*w++ = 0; *w++ = 0;
z = (volatile byte*)w; z = (volatile byte*)w;
#else
volatile word32* w;
/* align buffer */
while (len && ((size_t)z % sizeof(word32)) != 0) {
*z++ = 0; len--;
}
/* do aligned force zero */
for (w = (volatile word32*)z; len >= sizeof(*w); len -= sizeof(*w))
*w++ = 0;
z = (volatile byte*)w;
#endif #endif
#endif /* NO_ALIGNED_FORCEZERO */
/* do byte by byte force zero */
while (len--) *z++ = 0; while (len--) *z++ = 0;
} }