OSSL_PKEY_PARAM_FFC_COFACTOR
prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_COFACTOR);
&& !ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_FFC_COFACTOR,
OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_COFACTOR, NULL, 0), \
OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_COFACTOR, NULL, 0), \
&& TEST_int_eq(set_fromdata_string(ctx, OSSL_PKEY_PARAM_FFC_COFACTOR, "bad"), 0)
OSSL_PKEY_PARAM_FFC_COFACTOR,
OSSL_PKEY_PARAM_FFC_COFACTOR,
OSSL_PKEY_PARAM_FFC_COFACTOR,