00570nam a2200193 a 450000500170000002000150001708200240003210000170005624500520007326000310012530000270015669000240018369000220020769000170022996400220024699700130026899900170028195200780029820251203110251.0  a0471405744  a658.8402854678bGRA  aGraff, Jon C  aCryptography and E-commerceba wiley tech brief  aNew YorkbJohn Wileyc2001  axviii,222p.c22cm. PB.  aElectronic commerce  aComputer security  aCryptography  bENGcd658efg_  a100314 W  c83793d83793  02104070aPUbPUd2001-05-23g975.12l0o658.8402854678 GRAp100314yBK