00437nam a2200157 a 450000500170000002000150001708200160003210000240004824500380007226000260011030000220013649000650015863000210022363000180024463000170026220251203092029.0  a0849385210  a005.82bSTI  aStinson, Douglas R.  aCryptographybTheory and practice  aBoca RatonbCRCc1995  a434p.b20 cm.cHB  aCRC press series on discrete mathematics and its application  aComputer Science  aCoding theory  aCryptography