TY - BOOK AU - Cobb,Chey TI - Cryptography for dummies T2 - For dummies SN - 0764541889 AV - TK5102.94 .C62 2004 PY - 2004/// CY - Hoboken, NJ PB - John Wiley KW - Telecommunication KW - Security measures KW - Popular works KW - Data encryption (Computer science) ER -