Hi,
I am going through the checks done by EC_KEY_check_key method. I see
the following checks in order.
1. Is point at infinity? - reject.
2. Is point not on curve? reject.
3. Is point not in the primary subgroup? reject.
4. If priv key(scalar) available, then check if scalar * G != point.
If so, reject.
If priv key is available and we do step 4, isn't step 3 redundant? Can
we change this to something like this?
if (priv key)
step 4
else
step 3
Thanks,
Thulasi.
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