someone who studies secret code systems in order to obtain secret information

The success of British cryptanalysts during the Second World War in cracking German codes is well known. 英国密码分析员在第二次世界大战期间破解德国密码方面的成功是众所周知的。

He was assigned as a cryptanalyst to the British code-breaking team at Bletchley. 他被分配到位于布莱切利的英国密码破译小组担任密码分析员。