read

static VALUE
ossl_pkey_new_from_data(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    BIO *bio;
    VALUE data, pass;

    rb_scan_args(argc, argv, "11", &data, &pass);
    pass = ossl_pem_passwd_value(pass);

    bio = ossl_obj2bio(&data);
    if (!(pkey = d2i_PrivateKey_bio(bio, NULL))) {
        OSSL_BIO_reset(bio);
        if (!(pkey = PEM_read_bio_PrivateKey(bio, NULL, ossl_pem_passwd_cb, (void *)pass))) {
            OSSL_BIO_reset(bio);
            if (!(pkey = d2i_PUBKEY_bio(bio, NULL))) {
                OSSL_BIO_reset(bio);
                pkey = PEM_read_bio_PUBKEY(bio, NULL, ossl_pem_passwd_cb, (void *)pass);
            }
        }
    }

    BIO_free(bio);
    if (!pkey)
        ossl_raise(ePKeyError, "Could not parse PKey");

    return ossl_pkey_new(pkey);
}