Although the term "MULTOS" is used to refer to the worlds most secure smartcard operating system, there are actually two versions of MULTOS available.
Full MULTOS implementations are RSA capable and require interaction with a key management authority (KMA) to provide the cryptographic files necessary to enable the chips and to load applications. MULTOS step/one is a lower-cost, non-RSA capable implementation that was designed specifically for financial issuers who are migrating to EMV. The primary difference that issuers will notice is that instead of a KMA, cryptographic assurance is provided by issuer-hosted software, known as Control Centre.
Re-use applications - utilise exactly the same applications, and the same application development environment.
Re-use personalisation - supported by the same leading vendors that support MULTOS, therefore your equipment investment is protected.
Re-use security - the same security principles are followed for MULTOS step/one (except without any RSA cryptographic support), so you can be assured of the application and data protection.
Click here for MULTOS step/one Brochure