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This paper describes an automatic method for proving equivalence of implementations of block ciphers (and similar cryptographic algorithms). The method can compare two object code implementations or compare object code to a formal, mathematical specification. In either case it proves that the computations being compared are bit-for-bit equivalent. The method has two steps. First the computations are...
Modern, high performance microprocessors are extremely complex machines which require substantial validation effort to ensure functional correctness prior to tapeout. Generating the corner cases to test these designs is a mostly manual process, where completion is hard to judge. Experience shows that the errors that are caught late in the design, many post-silicon, are interactions between different...
A method is presented for automatically verifying asynchronous sequential circuits using temporal logic specifications. The method takes a circuit desctibed in terms of Boolean gates and Muller elements, and derves a state graph that summaries all possible circuit executions resulting from any set of finite delays on the outputs of the components. The correct behaviour of the circuit is expressed...
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