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ascon: don't skip wc_AsconAEAD128_Clear on auth error.

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jordan
2026-03-09 09:33:34 -05:00
parent b3f08f33b8
commit f7127ca729
1 changed files with 6 additions and 3 deletions
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wolfcrypt/src/ascon.c
+6 -3
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@@ -491,6 +491,8 @@ int wc_AsconAEAD128_DecryptUpdate(wc_AsconAEAD128* a, byte* out,
int wc_AsconAEAD128_DecryptFinal(wc_AsconAEAD128* a, const byte* tag)
{
int ret = 0;
if (a == NULL || tag == NULL)
return BAD_FUNC_ARG;
if (!a->keySet || !a->nonceSet || !a->adSet)
@@ -509,13 +511,14 @@ int wc_AsconAEAD128_DecryptFinal(wc_AsconAEAD128* a, const byte* tag)
a->state.s64[4] ^= a->key[1];
if (ConstantCompare(tag, (const byte*)&a->state.s64[3],
ASCON_AEAD128_TAG_SZ) != 0)
return ASCON_AUTH_E;
ASCON_AEAD128_TAG_SZ) != 0) {
ret = ASCON_AUTH_E;
}
/* Clear state as soon as possible */
wc_AsconAEAD128_Clear(a);
return 0;
return ret;
}
#endif /* HAVE_ASCON */