An algorithm that verifies whether a given subset has sum zero is a "verifier". The proof is passed to the verifier, which verifies it. It was possible to bypass the bytecode verifier and access the native underlying operating system. SPKI does not use any notion of trust, as the verifier is also the issuer. If the Verifier accepts the DAA supplied it will produce a certified AIK. Driver Verifier was introduced to stress test and catch device driver bugs. The object created by the verifier to convey this result is called an assertion. In a "public coin" protocol, the random choices made by the verifier are made public. To show this, first suppose we have a deterministic verifier. SDC Verifier enhances Femap with a new functionality. Their work was often checked by a second operator using a verifier machine. Doing so requires constant conditions such as distance, illumination angle, sensor angle and verifier aperture. Steve stores "v" and "s", indexed by , as Carol's password verifier and salt. In reality it was unworkable and almost invariably users acquired a stand-alone keypunch/verifier. In general, a verifier does not have to be polynomial-time.