Digital Fortress (পেপারব্যাক)

Summary of the Book

Faced by a nearly unbreakable code, the NSA contacts Susan Fletcher, their head cryptographer. Susan discovers that the code reveals the existence of a threat, unlike any the Government has faced before. This is no bomb or weapon of mass destruction, but a collection of secrets about the Government that can wreak havoc upon release. Now Susan must wade through the mystery and protect the nation and the man she loves.