公开(公告)号：JPH02105192A

公开(公告)日：1990-04-17

申请号：JP21154689

申请日：1989-08-18

Applicant: IBM

Inventor： SUTEIBUN EMU MATEIISU ,  DENIIZU JIII ABARAHAMU ,  DONARUDO BIII JIYONSON ,  RAMESHIYU KEI KAAN ,  AN BUI RI ,  ROOSUTEISUROO PURAIMAKU ,  JIYURIAN TOOMASU ,  JIYON DEII UIRUKINZU ,  FUIRU SHIII II ,  RONARUDO EMU SUMISU

IPC: G09C1/00 ,  G07F7/10 ,  H04L9/00 ,  H04L9/32

Abstract: PURPOSE: To provide a flexible method for key-connecting a format, use and processing permission by correlating a control vector permitting key use, which the setter of the key intends, to the generation key of a personal identification number(PIN) and the ciphering key of PIN. CONSTITUTION: Restriction for the permission of the related key is contained in use designated by the control vector with several PIN processing instructions such as the generation, verification and conversion of PIN and PIN block generation. The control vector restricts the permission of the several instructions for processing clear sentence PIN input at the time of PIN verification and the like. Furthermore, the control vector identifies the PIN processing for specified PIN format or specified processing algorithm and contains information for restriction according to circumstances. Thus, the flexible method for connecting the format, use and processing permission to the key is obtained by introducing such control vector.