For more than half a century, governments all over the world trusted a single company to keep the communications of their spies, soldiers and diplomats secret. The company, Crypto AG ... made millions of dollars selling equipment to more than 120 countries well into the 21st century. Its clients included Iran, military juntas in Latin America, nuclear rivals India and Pakistan, and even the Vatican. But what none of its customers ever knew was that Crypto AG was secretly owned by the CIA in a highly classified partnership with West German intelligence. These spy agencies rigged the company's devices so they could easily break the codes that countries used to send encrypted messages. The decades-long arrangement, among the most closely guarded secrets of the Cold War, is laid bare in a classified, comprehensive CIA history of the operation obtained by The Washington Post and ZDF, a German public broadcaster, in a joint reporting project. The company always made at least two versions of its products - secure models that would be sold to friendly governments, and rigged systems for the rest of the world. Throughout the 1980s, the list of Crypto's leading clients read like a catalogue of global trouble spots. In 1981, Saudi Arabia was Crypto's biggest customer, followed by Iran, Italy, Indonesia, Iraq, Libya, Jordan and South Korea. To protect its market position, Crypto and its secret owners engaged in subtle smear campaigns against rival companies ... and plied government officials with bribes.