[openssl-dev] ecp_nistz256 is_one is too liberal with what it considers to be one

[Brian Smith]

Please see the attached program and consider the following change:

```
   if (P256_LIMBS == 8) {
     res |= a[4] ^ ONE[4];
     res |= a[5] ^ ONE[5];
     res |= a[6] ^ ONE[6];
+    res |= a[7] ^ ONE[7];
   }
```

Cheers,
Brian
-- 
https://briansmith.org/
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