• Security in Computing 

  Pfleeger, Charles P; Pfleeger, Shari Lawrence (Prentice Hall-PTR, 2003-02-02)
• CRYPTOGRAPHY AND DATA SECURITY 

  Denning, Dorothy Elizabeth Robling (Addison Wesley, 1982-06-30)
• CRYPTOGRAPHY AND NETWORK SECURITY 

  Stallings, William (PEARSON, 2011-08-15)

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