公开(公告)号：GB2414840B

公开(公告)日：2006-04-19

申请号：GB0518900

申请日：2004-04-30

Applicant: IBM

Inventor： CHECK MARK A ,  SLEGEL TIMOTHY J ,  MOORE BRIAN B

IPC: G06F9/355 ,  G06F9/30 ,  G06F9/302 ,  G06F9/34 ,  G06F12/06 ,  G06F21/00 ,  H04L9/32

Abstract: A method, system and computer program product for computing a message authentication code for data in storage of a computing environment. An instruction specifies a unit of storage for which an authentication code is to be computed. An computing operation computes an authentication code for the unit of storage.

公开(公告)号：GB2414840A

公开(公告)日：2005-12-07

申请号：GB0518900

申请日：2004-04-30

Applicant: IBM

Inventor： CHECK MARK A ,  SLEGEL TIMOTHY J ,  MOORE BRIAN B

IPC: G06F9/30 ,  G06F9/302 ,  G06F21/00 ,  H04L9/32 ,  G06F9/355 ,  G06F9/34 ,  G06F12/06

Abstract: The method may further comprise the signed displacement field comprising a signed portion, e.g. an 8 bit most significant portion, and an unsigned portion, e.g. a 12 bit least significant portion. The signed displacement machine instruction may also be fetched and executed by a central processing unit of an alternate (emulating) computer architecture.