DISCRETE MATHEMATICS AND ITS APPLICATIONS Series editor KENNETH H. ROSEN DISCRETE MATHEMATICS AND ITS APPLICATIONS Series editor KENNETH H. ROSEN C5084 Cryptography Theory and Practice Third Edition Douglas R. Stinson Cryptography Theory and Practice Third Edition Stinson C5084_DMA_Cover.indd 1 C5084_DMA_Cover.indd 1 8/25/05 10:10:56 AM 8/25/05 10:10:56 AM Process Cyan Process CyanProcess Magenta Process MagentaProcess Yellow Process YellowProcess Black Process BlackPANTONE 192 C PANTONE 192 C