公开(公告)号：JPH01228038A

公开(公告)日：1989-09-12

申请号：JP31965988

申请日：1988-12-20

Applicant: IBM

Inventor： RICHIYAADO IIUIN BAAMU ,  TERII RII BOODEN ,  JIYASUTEIN RARUFU BATSUTOUERU ,  KAARU EDOWAADO KURAAKU ,  AREN JIYOOJI GANEKU ,  JIEEMUZU RAMU ,  MAIKERU JIERAADO MAARU ,  KENESU AANESUTO PURAMUBETSUKU ,  KIYASUPAA ANSONII SUKARUZUI ,  RICHIYAADO JIYON SHIYAMARUZU ,  RONARUDO MOOTON SUMISU ,  JIYURIAN TOOMASU

IPC: G06F12/08 ,  G06F9/46 ,  G06F12/02 ,  G06F12/10 ,  G06F12/1036 ,  G06F12/14

Abstract: PURPOSE: To block undesired access to an address space by performing the user management of address space corresponding to a token applied from a system for space identification. CONSTITUTION: An access register transform(ART) operation 10 uses contents in an access register for providing a segment table describer(STD) to be used for dynamic address translation(DAT). An instruction 12 contains an OP code, B field for designating a general-purpose register 14 containing a base address, and displacement D for generating the logical address of a storage area operand while being combined with the base address in the general-purpose register 14 through an adder 15. The STD from the ART 10 is combined with the logical address from the adder 15 and translated together by a DAT 18, and the real address of an operand to be used for the system is generated.

公开(公告)号：JPH0619392A

公开(公告)日：1994-01-28

申请号：JP16707991

申请日：1991-07-08

Applicant: IBM

Inventor： RUSHINA RIINIEN GURIIN ,  MAIKERU JIEEMUZU KERII ,  RONARUDO MOOTON SUMISU ,  JIYURIAN TOOMASU ,  FUIRU CHIICHIYUN IEE

IPC: G09C1/00 ,  G06F12/14 ,  H04L9/08 ,  H04L9/06 ,  H04L9/14

Abstract: PURPOSE: To dynamically change the cryptographic master key of a system without stopping the system or spoiling the integrity of cipher processing operation that is being executed. CONSTITUTION: A cipher processing mechanism 102 and a cipher processing support program 111 are used. Individual master keys are given characteristic version numbers. When an inputted master key is used as a new current master key, the current master key used so far is changed into an old master key. When it is found from a version number attached to a received cipher processing request that the key used for the received request is a key ciphered with the old master key, the key is reciphered and converted from the key ciphered with the old master key into a key ciphered with the current master key, and the converted key is used thereafter.

公开(公告)号：JPS6234242A

公开(公告)日：1987-02-14

申请号：JP15813186

申请日：1986-07-07

Applicant: IBM

Inventor： WAANAA BUTSUKUHORUTSU ,  RONARUDO MOOTON SUMISU

IPC: G06F9/30 ,  G06F9/38 ,  G06F9/46 ,  G06F9/48 ,  G06F15/78 ,  G06F17/16

Abstract: The invention relates to vector registers (VRs) which have associated therewith a vector status register (VSR) that includes VR status information in the form of vector in-use and change bits for saving and restoring (the contents of) the VRs. When the vector in-use bit for a VR is zero, the saving and subsequent restoring of the VR is eliminated because the VR is known to contain all zeros. This reduces program switching time. The vector change bit for a VR serves to reduce switching time still further by permitting the saving of a VR to be eliminated when its vector in-use bit is one but the vector change bit is zero. Although such a VR is in use, its content has not been changed since the last restore from the same save area in storage. The previously saved information is still valid. The vector change bits do not affect the restoring of vector registers and, therefore, do not reduce the restore time.

公开(公告)号：JPS6010354A

公开(公告)日：1985-01-19

申请号：JP9579084

申请日：1984-05-15

Applicant: IBM

Inventor： PIITAA HAAMAN GAMU ,  AASAA RUISU REBUIN ,  RONARUDO MOOTON SUMISU ,  JIYON HEIDON UIRUSON

IPC: G06F11/28 ,  G06F11/36 ,  G06F15/16 ,  G06F15/177

公开(公告)号：JPS53118322A

公开(公告)日：1978-10-16

申请号：JP1548678

申请日：1978-02-15

Applicant: IBM

Inventor： PATORITSUKU MERUBIN GANON ,  ANDORIYUU ROBAATO HERAA ,  RONARUDO MOOTON SUMISU

IPC: G06F12/10