Hello!
During the OpenSSL source investigation I found some strange call in
function BN_mod_inverse:
...
if (sign < 0)
{
if (!BN_sub(Y,n,Y)) goto err;
}
...
But! Declaration of BN_sub looks like this:
int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)
In some circumstances r will be expanded in BN_sub, so original call
"BN_sub(Y,n,Y)" breaks the rule of const.
--
Eugene.
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