1. Decrypted Secrets: Methods and Maxims of Cryptology;Bauer,2007
2. Discovering covert digital evidence;Hosmer,2003
3. Techniques and Applications of Digital Watermarking and Content Protection;Arnold,2003
4. Information Hiding: Steganography and Watermarking—Attacks and Countermeasures;Johnson,2001
5. The Codebreakers: The Story of Secret Writing;Kahn,1996