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Enabling TLS compression may make mbedTLS vulnerable to the CRIME attack [1]. It should not be enabled unless is is sure CRIME and similar attacks are not applicable to the particulare situation. As zlib is probably enabled in most systems, the user might end up with a vulnerable system without knowing. So, instead of enabling compression support if the zlib package is available, we make the compression support a config option. This way, the user has to explicitly enable compression support and is warned by the help text about the risk. [1] https://tls.mbed.org/kb/how-to/deflate-compression-in-ssl-tls Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches