Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2005-02-01
2005-02-01
Callahan, Paul E. (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S152000, C713S164000, C713S189000, C713S152000, C380S280000, C710S039000, C710S040000, C711S154000
Reexamination Certificate
active
06851059
ABSTRACT:
A method for enabling a Q_key that is tamper proof from applications on a distributed computer system to protect selected network operations is provided. Applications and an operating system (OS) execute on the end nodes and each may access various network resources. In the invention, the network resources are configured for selective access by particular applications or OS.In a preferred embodiment, a control bit of a Q_key, which allows applications to authenticate their use of particular communication resources, i.e., the send and receive queues, is reserved and utilized to signal whether a particular application is allowed access to the resources. Setting the control bit to 0 allows the Q_key to be set by an application directly. When the control bit is set to 1, the Q_key cannot be set by an application and can only be set using a privileged operation performed only by the OS.
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Neal Danny Marvin
Pfister Gregory Francis
Recio Renato John
Thurber Steven Mark
Callahan Paul E.
Dillon & Yudell LLP
International Business Machines - Corporation
McBurney Mark E.
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