Invention Grant
US07921234B2 Communications channel interposer, method and program product for verifying integrity of untrusted subsystem responses to a request
有权
通信通道插入器，方法和程序产品，用于验证不可信子系统对请求的响应的完整性
- Patent Title: Communications channel interposer, method and program product for verifying integrity of untrusted subsystem responses to a request
- Patent Title (中): 通信通道插入器，方法和程序产品，用于验证不可信子系统对请求的响应的完整性
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Application No.: US12407879Application Date: 2009-03-20
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Publication No.: US07921234B2Publication Date: 2011-04-05
- Inventor: Vincenzo Condorelli , Thomas J. Dewkett , Michael D. Hocker , Tamas Visegrady
- Applicant: Vincenzo Condorelli , Thomas J. Dewkett , Michael D. Hocker , Tamas Visegrady
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Heslin Rothenberg Farle & Mesiti P.C.
- Agent Steven Chiu, Esq.; Kevin P. Radigan, Esq.
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G06F11/00
Abstract:
In a communications channel coupled to multiple duplicated subsystems, a method, interposer and program product are provided for verifying integrity of subsystem responses. Within the communications channel, a first checksum is calculated with receipt of a first response from a first subsystem responsive to a common request, and a second checksum is calculated for a second response of a second subsystem received responsive to the common request. The first checksum and the second checksum are compared, and if matching, only one of the first response and the second response is forwarded from the communications channel as the response to the common request, with the other of the first response and the second response being discarded by the communications channel.
Public/Granted literature
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