KABUL, Afghanistan — Afghanistan’s president said Wednesday that he was astounded by the new revelations of Central Intelligence Agency torture in his country and elsewhere, adding his name to the global reaction of shock, anger and cynicism that had swelled over the past 24 hours.

At a news conference in Kabul, the president, Ashraf Ghani, said he had received the Senate report late Tuesday describing the abuses and had stayed up all night reading it. He said he was seeking more information on precisely how many Afghans had been victims.

“The report shows that the principles of human rights, as well as the Constitution of the United States and universally accepted ethics, had been violated by the C.I.A. and its contractors,” Mr. Ghani said.

“This report,” he said, “shows that our fellow countrymen have unfortunately been tortured and had their rights violated.” Some of them, he said, “were proven to be entirely innocent.”