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Add secure_wipe() #25

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merged 1 commit into from
Feb 7, 2024
Merged

Add secure_wipe() #25

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1 change: 1 addition & 0 deletions include/tkey/lib.h
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Original file line number Diff line number Diff line change
Expand Up @@ -13,4 +13,5 @@ void memcpy_s(void *dest, size_t destsize, const void *src, size_t n);
void *wordcpy(void *dest, const void *src, unsigned n);
void wordcpy_s(void *dest, size_t destsize, const void *src, size_t n);
int memeq(void *dest, const void *src, size_t n);
void secure_wipe(void *v, size_t n);
#endif
7 changes: 7 additions & 0 deletions libcommon/lib.c
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Expand Up @@ -82,3 +82,10 @@ int memeq(void *dest, const void *src, size_t n)

return res;
}

void secure_wipe(void *v, size_t n)
{
volatile uint8_t *p = (volatile uint8_t *)v;
while (n--)
*p++ = 0;
}
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