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c0db39e253
In crypto/sha3_generic.c, the keccakf() function calls keccakf_round() to do four of Keccak-f's five step mappings. However, it does not do the Iota step mapping - presumably because that is dependent on round number, whereas Theta, Rho, Pi and Chi are not. Note that the keccakf_round() function needs to be explicitly non-inlined on certain architectures as gcc's produced output will (or used to) use over 1KiB of stack space if inlined. Now, this code was copied more or less verbatim into lib/crypto/sha3.c, so that has the same aesthetic issue. Fix this there by passing the round number into sha3_keccakf_one_round_generic() and doing the Iota step mapping there. crypto/sha3_generic.c is left untouched as that will be converted to use lib/crypto/sha3.c at some point. Suggested-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20251026055032.1413733-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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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 reStructuredText 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.