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According to 802.15.4-2003/2006/2015 specifications the MAC frame is composed of MHR, MAC payload and MFR and just the outgoing MAC payload must be encrypted. If communication is secure,sender build Auxiliary Security Header(ASH), insert it next to the standard MHR header with security enabled bit ON, and secure frames before transmitting them. According to the information carried within the ASH, recipient retrieves the right cryptographic key and correctly un-secure MAC frames. The error scenario occurs on Linux using IEEE802154_SCF_SECLEVEL_ENC(4) security level when llsec_do_encrypt_unauth() function builds theses MAC frames incorrectly. On recipients these MAC frames are discarded,logging "got invalid frame" messages. Signed-off-by: Diogenes Pereira <dvnp@cesar.org.br> Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.