William Friedman

Thus it was noted that while speaking with H. Nyquist , one of the top Bell consultants working on the X-system , Alan had met William Friedman , who was the chief American cryptanalyst . It got back to the ' cell ' that Alan was ' the top cryptanalyst in England ' .

有一次，艾伦见了美国首席密码分析员威廉姆·弗雷德曼，于是隔间的同事就知道了，原来艾伦是英国最高级别的密码分析员。