James Bamford’s books in this area are very readable:
The Puzzle Palace: Inside the National Security Agency, America’s Most Secret Intelligence Organization
Body of Secrets: Anatomy of the Ultra-Secret National Security Agency
The classic history of the field is this one, but you’ll get some coverage of the topic in practically any popular book on cryptography.
James Bamford’s books in this area are very readable:
The Puzzle Palace: Inside the National Security Agency, America’s Most Secret Intelligence Organization
Body of Secrets: Anatomy of the Ultra-Secret National Security Agency
The classic history of the field is this one, but you’ll get some coverage of the topic in practically any popular book on cryptography.