mirror of https://github.com/torvalds/linux.git
8522104f75
Remove the "crct10dif" shash algorithm from the crypto API. It has no known user now that the lib is no longer built on top of it. It has no remaining references in kernel code. The only other potential users would be the usual components that allow specifying arbitrary hash algorithms by name, namely AF_ALG and dm-integrity. However there are no indications that "crct10dif" is being used with these components. Debian Code Search and web searches don't find anything relevant, and explicitly grepping the source code of the usual suspects (cryptsetup, libell, iwd) finds no matches either. "crc32" and "crc32c" are used in a few more places, but that doesn't seem to be the case for "crct10dif". crc_t10dif_update() is also tested by crc_kunit now, so the test coverage provided via the crypto self-tests is no longer needed. Also note that the "crct10dif" shash algorithm was inconsistent with the rest of the shash API in that it wrote the digest in CPU endianness, making the resulting byte array differ on little endian vs. big endian platforms. This means it was effectively just built for use by the lib functions, and it was not actually correct to treat it as "just another hash function" that could be dropped in via the shash API. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20250206173857.39794-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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