Answer:
Alan Turing
Explanation:
Alan Turing was a brilliant mathematician. Born in London in 1912, he studied at both Cambridge and Princeton universities. He was already working part-time for the British Government's Code and Cypher School before the Second World War broke out.
For further information :
https://www.iwm.org.uk/history/how-alan-turing-cracked-the-enigma-code#:~:text=Alan%20Turing%20was%20a%20brilliant,Second%20World%20War%20broke%20out.
