Keyboard of a Nazi German Enigma cipher machine used during World War II to develop nearly unbreakable codes for sending messages. The Enigma's settings offered 150,000,000,000,000,000,000 possible solutions. Allied efforts based in Bletchley Park, England were eventually able to crack the code using the world's first electromagnetic computers.

- Image ID: ECEBAA
Keyboard of a Nazi German Enigma cipher machine used during World War II to develop nearly unbreakable codes for sending messages. The Enigma's settings offered 150,000,000,000,000,000,000 possible solutions. Allied efforts based in Bletchley Park, England were eventually able to crack the code using the world's first electromagnetic computers.
CIA / Alamy Stock Photo
Image ID: ECEBAA
Keyboard of a Nazi German Enigma cipher machine used during World War II to develop nearly unbreakable codes for sending messages. The Enigma's settings offered 150,000,000,000,000,000,000 possible solutions. Allied efforts based in Bletchley Park, England were eventually able to crack the code using the world's first electromagnetic computers.