public_key

static VALUE
ossl_dsa_to_public_key(VALUE self)
{
    EVP_PKEY *pkey;
    DSA *dsa;
    VALUE obj;
        
    GetPKeyDSA(self, pkey);
    /* err check performed by dsa_instance */
    dsa = DSAPublicKey_dup(pkey->pkey.dsa);
    obj = dsa_instance(CLASS_OF(self), dsa);
    if (obj == Qfalse) {
        DSA_free(dsa);
        ossl_raise(eDSAError, NULL);
    }
    return obj;
}