公开(公告)号：DE19960047A1

公开(公告)日：2000-08-17

申请号：DE19960047

申请日：1999-12-14

Applicant: IBM

Inventor： CHARI SURESH NARAYANA ,  COPPERSMITH DON ,  SCHERZER HELMUT ,  ROHATQI PANKAJ ,  WEINGART STEVE HARRIS ,  WITZEL MARTIN

IPC: G07F7/10 ,  H04L9/06 ,  H04L9/28 ,  G06K19/073 ,  H04L12/22

Abstract: Information is transformed before completing cryptographic process by applying N:N operation on elements of information in which case every element of information is combined with exactly corresponding element of transformed information. Cryptographic process is combined with transformed information. Inverse process is performed by applying inverse N:N operation on transformation and cryptographic processed information. Independent claims are included for: (a) a data media that can be used by an cryptographic information processing system (b) an information processing system (c) a chip card

公开(公告)号：DE19960047B4

公开(公告)日：2006-01-26

申请号：DE19960047

申请日：1999-12-14

Applicant: IBM

Inventor： CHARI SURESH NARAYANA ,  COPPERSMITH DON ,  SCHERZER HELMUT ,  ROHATQI PANKAJ ,  WEINGART STEVE HARRIS ,  WITZEL MARTIN

IPC: G06K19/073 ,  G07F7/10 ,  H04L9/06 ,  H04L9/28 ,  H04L12/22