Specification of the JavaCard API in JML

The version of the following full text has not yet been defined or was untraceable and may differ from the publisher's version. A b s tr a c t This paper reports on an effort to increase the reliability of JavaCard-based sm art cards by means of formal specification and verification of JavaCard source code. As a first step, lightweight formal interface specifications, writ­ ten in the specification language JML, have been developed for all the classes in the JavaCard API (version 2.1). They make many of the implicit assump­ tions underlying the current implementation explicit, and thus facilitate the use of this API and increase the reliability of the code th at is based on it. Furthermore, the formal specifications are amenable to tool support, for ver­ ification purposes.