The Johns Hopkins University

Sterling E Vinson

Margaret F Lospinuso

Laura J Glendenning

Gary L Jackson, Ii

Robert M Seng

Sakunthala Harshavardhana

Kathleen N McGill

Tzuhsiu Chiou

A test environment apparatus having processing circuitry is provided for testing an embedded system-under-test. The processing circuitry may be configured to implement the system-under-test for interaction with external test participants via messaging and control operation of an inner agent and an outer agent. The inner agent may be implemented within a virtual machine that is also implementing the system-under-test and the outer agent may be implemented external to the virtual machine implementing the system-under-test. The inner agent and the outer agent may be controlled to operate collaboratively to trigger captures of snapshots that store current states of the system-under-test at respective times and trigger a rollback of the system-under-test based on a timestamp of a delayed message using a snapshot for a selected time that provides a state of the system-under-test prior to the timestamp to permit subsequent delivery of the delayed message with the system-under-test in a rollback state.

Virtual time test environment

An example method for determining a software classification is provided. The example method may include determining a plurality of substream boundaries including a first substream boundary within a representation of a software binary, and segmenting the representation of the software binary into a plurality of substreams. The example method may further include generating a first count string for a first substream based on operational class token counts in a tokenization of the first substream, where the tokenization of the first substream may be based on a mapping of commands within the first substream to operational classes. The example method may further include performing a first count string comparison with a reference database to determine a first count string match, where the first count string comparison being based on the first count string, and classifying the software binary based on the first count string match.

Apparatus and method for identifying constituent parts of software binaries

Growing community of inventors

Columbia, MD, United States of America

Sterling E Vinson