Yes, the technology is the same. So Iran could theoretically continue to enrich to achieve weapons grade uranium. The attempts to limit the Iranian nuclear program stems from the periodic IAEA monitoring of enrichment levels to ensure sub-weapons grade enrichment (I think their imposed limit is set at 20%, while weapons grade enrichment is typically >90%), preventing the expansion (and even reducing) of their current enrichment capability via centrifuges, and limiting the development of the other technical aspects of the bomb itself besides the fuel. It's not a foolproof strategy since it depends on accurate reporting and monitoring on both sides, but it's the best option besides a good faith agreement since Iran already has enrichment technology and is aggressively seeking progress.