SNIP_CLASSIC_CRYPTO_FIGURE_Figure_7_1_CRYPTODRIVER

Figure 7.1: AUTOSAR Layered View with Crypto Driver Module The Crypto Driver module is located in the micro controller abstraction layer and is below the Crypto Interface module and Crypto Service Manager module. It implements a generic interface for synchronous and asynchronous cryptographic primitives. It also supports key storage, key configuration, and key management for cryptographic services. T o provide cryptographic functionalities an ECU needs to integrate one unique Crypto Service Manager module and one Crypto Interface. However, the Crypto Interface can access several Crypto Drivers, each of them is configured according to the underlying Crypto Driver Object. A Crypto Driver Object represents an instance of independent crypto hardware "device" (e.g. AES accelerator). There could be a channel for fast AES and CMAC calculations on an HSM for jobs with high priority , which ends on a native AES calculation service in the Crypto Driver. But it is also possible, that a Crypto Driver Object is a piece of software, e.g. for RSA calculations where jobs are able to encrypt, decrypt, sign or verify data. The Crypto Driver Object is the endpoint of a crypto channel.