EVP_PKEY_meth_add0() adds B<pmeth> to the user defined stack of methods.
EVP_PKEY_meth_remove() removes an B<EVP_PKEY_METHOD> object added by
EVP_PKEY_meth_add0() adds B<pmeth> to the user defined stack of methods.
EVP_PKEY_meth_remove() removes an B<EVP_PKEY_METHOD> object added by