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c1d760a471
It is possible to stand up own certificates and sign PE-COFF binaries using SHA-224. However it never became popular or needed since it has similar costs as SHA-256. Windows Authenticode infrastructure never had support for SHA-224, and all secureboot keys used fro linux vmlinuz have always been using at least SHA-256. Given the point of mscode_parser is to support interoperatiblity with typical de-facto hashes, remove support for SHA-224 to avoid posibility of creating interoperatibility issues with rhboot/shim, grub, and non-linux systems trying to sign or verify vmlinux. SHA-224 itself is not removed from the kernel, as it is truncated SHA-256. If requested I can write patches to remove SHA-224 support across all of the drivers. Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.