THESAURUS 1 (later: RUBICON), was a secret operation of the German Bundesnachrichtendienst (BND) and the US Central Intelligence Agency (CIA), to purchase the Swiss crypto manufacturer Crypto AG (Hagelin) — codenamed MINERVA — in order to control the company, its algorithms and – indirectly – its customers. From 12 June 1970 2 onwards, Crypto AG was jointly owned by CIA and BND, each with 50% of the shares, and from 30 June 1994 exclusively by the CIA.

1970, Crypto AG had secretly been purchased by the German BND and the American CIA, in a project known as Operation THESAURUS — later renamed RUBICON. In 1994, the CIA became the sole owner, and in 2019 the company was dissolved, after the product range and some personnel had been taken over by Crypto International AG [12].

https://www.cryptomuseum.com/intel/cia/rubicon.htm

https://www.cryptomuseum.com/manuf/crypto/index.htm