These were the first of Hagelin 's cipher machines to feature the pin - and - lug mechanism .
The C - 35 and C - 36 were cipher machines designed by Swedish cryptographer Boris Hagelin in the 1930s .
These were the first of cryptographer 's cipher machines to feature the pin - and - lug mechanism .
The C - 35 and C - 36 were cipher machines designed by Swedish cryptographer Boris Hagelin in the 1930s .