On Thu, 2020-12-17 at 15:16 +0530, prudvi raj wrote:
> Hi,
>
> I need to set custom accelerated functions for bn_mod_exp methods in
> openssl 1.1.1, while upgrading for openssl 1.0.2. Here's the code
> snippet () :
> --
> static DH_METHOD Intoto_DH_Method;
> static RSA_METHOD Intoto_RSA_Method;
> static DSA_METHOD Intoto_DSA_Method;
>
> void updatePublicKeyMethods()
> {
> Intoto_DH_Method = *(DH_get_default_method());
> Intoto_DH_Method.bn_mod_exp = Intoto_DH_mod_exp;
> DH_set_default_method(&Intoto_DH_Method);
>
> Intoto_RSA_Method = *(RSA_get_default_method());
> Intoto_RSA_Method.bn_mod_exp = Intoto_RSA_mod_exp;
> RSA_set_default_method(&Intoto_RSA_Method);
>
> Intoto_DSA_Method = *(DSA_get_default_method());
> Intoto_DSA_Method.bn_mod_exp = Intoto_DSA_mod_exp;
> DSA_set_default_method(&Intoto_DSA_Method);
>
> return;
> }
> --
> As RSA_METHOD,DSA_METHOD & DH_METHOD objects are Opaque now , Can
> anyone help me with what would be the replacement for above code ??
There is RSA_meth_set_bn_mod_exp() function and the respective
equivalents for DH and DSA. Of course you'll also have to use
RSA_meth_dup() to duplicate the default method before you can
manipulate it. And you'll need to free it once you stop using the
OpenSSL functions.
--
Tomáš Mráz
No matter how far down the wrong road you've gone, turn back.
Turkish proverb
[You'll know whether the road is wrong if you carefully listen to your
conscience.]