Linux kernel stable tree https://git.rulkc.org/pub/scm/linux/kernel/git/stable/linux.git/atom?h=master 2026-03-27T14:35:03+00:00 2026-03-27T14:35:03+00:00 Eric Biggers ebiggers@kernel.org 2026-03-02T07:59:59+00:00 urn:sha1:6d888db2cfd910ad5b2070659e9b2598bbe4081f Remove crypto/hkdf.c, since it's no longer used. Originally it had two users, but now both of them just inline the needed HMAC computations using the HMAC library APIs. That ends up being better, since it eliminates all the complexity and performance issues associated with the crypto_shash abstraction and multi-step HMAC input formatting. Acked-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Keith Busch <kbusch@kernel.org> 2025-03-20T23:53:53+00:00 Hannes Reinecke hare@kernel.org 2025-02-24T12:38:09+00:00 urn:sha1:3241cd0c6c17919b5b984c6b770ced3d797ddc4c Separate out the HKDF functions into a separate module to to make them available to other callers. And add a testsuite to the module with test vectors from RFC 5869 (and additional vectors for SHA384 and SHA512) to ensure the integrity of the algorithm. Signed-off-by: Hannes Reinecke <hare@kernel.org> Acked-by: Eric Biggers <ebiggers@kernel.org> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Keith Busch <kbusch@kernel.org>