| /****************************************************************************** |
| * Filename: aes_doc.h |
| * Revised: 2017-06-05 12:13:49 +0200 (Mon, 05 Jun 2017) |
| * Revision: 49096 |
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| //! \addtogroup aes_api |
| //! @{ |
| //! \section sec_aes Introduction |
| //! |
| //! The AES (advanced encryption standard) API provides access to the AES and key |
| //! store functionality of the crypto core. The SHA2 accelerator is also |
| //! contained within the crypto core. Hence, only one of SHA2 and AES may be |
| //! used at the same time. |
| //! This module offers hardware acceleration for several protocols using the |
| //! AES block cypher. The protocols below are supported by the hardware. The |
| //! driverlib documentation only explicitly references the most commonly used ones. |
| //! - ECB |
| //! - CBC |
| //! - CCM |
| //! - CBC-MAC |
| //! - GCM |
| //! |
| //! The key store is a section of crypto memory that is only accessible to the crypto module |
| //! and may be written to by the application via the crypto DMA. It is not possible to |
| //! read from the key store to main memory. Thereby, it is not possible to |
| //! compromise the key should the application be hacked if the original key in main |
| //! memory was overwritten already. |
| //! |
| //! The crypto core does not have retention and all configuration settings and |
| //! keys in the keystore are lost when going into standby or shutdown. |
| //! The typical security advantages a key store offers are not available in these |
| //! low power modes as the key must be saved in regular memory to reload |
| //! it after going into standby or shutdown. |
| //! Consequently, the keystore primarily serves as an interface to the AES accelerator. |
| //! |
| //! @} |