International Business Machines Corporation

James T Mulvey

Jose I Ortiz

Xiaoyan Y Zhang

Chunlong Liang

Hans Boettiger

Jose Angel Rodriguez

David J Sudlik

Graham W Ewart

Gregory T Reid

Patricia A Healy

An approach for optimizing security token exchange. The approach receives a first request from a client. The approach extracts a first security token and an API reference. The approach validates the first security token. If the security token is valid, then the approach, calls the API and retrieves a second security token, embeds the second security token in the API and sends a second request with a third security token and the reference to the API to another application in a different domain.

Securely preserving prior security tokens for recall

A method is disclosed for instructing a computing system to unwind a program call stack that lacks explicit Stack Frame Backchain Pointers, including finding the called function's entry point, determining the return point in the calling function, placing a NOP instruction at the return point that contains embedded information about what type of call was used, and backing up in storage by an amount determined by using the address of the called function's entry point to locate the static data item containing the called function's DSA size.

Method for unwinding a program call stack

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Red Hook, NY, United States of America

James T Mulvey