Not sure by "nuclear rights" whether he means "nuclear power" or "nuclear weapons." The Iranians may not know either. Anyway, the story, via Fars News Agency (h/t Weasel Zippers):
Swiss Ambassador to Tehran Livia Leu Agosti attended a meeting with senior Iranian foreign ministry officials a few days ago to submit a letter from the US president to Tehran leaders.
Vice-Chairman of the Iranian Parliament's National Security and Foreign Policy Commission Hossein Ebrahimi told FNA that during the meeting, Agosti had told the Iranian officials that President Barack Obama recognizes Iran's right of access and use of the nuclear technology.
"There are a couple of points with regard to this (US) message (to Iran)," Ebrahimi said and added, "Firstly, during the session to submit the message, the Swiss ambassador to Tehran quoted the US president as saying that 'we (the US) recognize your nuclear rights'."
As regards the second issue, the lawmaker said that the Swiss diplomat had also quoted Obama as saying that "I didn't want to impose sanctions on your central bank but I had no options but to approve it since a Congress majority had approved the decision."