Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull crypto library updates from Eric Biggers:

- Add a RISC-V optimized implementation of Poly1305.

Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull crypto library updates from Eric Biggers:

- Add a RISC-V optimized implementation of Poly1305. This code was
written by Andy Polyakov and contributed by Zhihang Shao.

- Migrate the MD5 code into lib/crypto/, and add KUnit tests for MD5.

Yes, it's still the 90s, and several kernel subsystems are still
using MD5 for legacy use cases. As long as that remains the case,
it's helpful to clean it up in the same way as I've been doing for
other algorithms.

Later, I plan to convert most of these users of MD5 to use the new
MD5 library API instead of the generic crypto API.

- Simplify the organization of the ChaCha, Poly1305, BLAKE2s, and
Curve25519 code.

Consolidate these into one module per algorithm, and centralize the
configuration and build process. This is the same reorganization that
has already been successful for SHA-1 and SHA-2.

- Remove the unused crypto_kpp API for Curve25519.

- Migrate the BLAKE2s and Curve25519 self-tests to KUnit.

- Always enable the architecture-optimized BLAKE2s code.

* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (38 commits)
crypto: md5 - Implement export_core() and import_core()
wireguard: kconfig: simplify crypto kconfig selections
lib/crypto: tests: Enable Curve25519 test when CRYPTO_SELFTESTS
lib/crypto: curve25519: Consolidate into single module
lib/crypto: curve25519: Move a couple functions out-of-line
lib/crypto: tests: Add Curve25519 benchmark
lib/crypto: tests: Migrate Curve25519 self-test to KUnit
crypto: curve25519 - Remove unused kpp support
crypto: testmgr - Remove curve25519 kpp tests
crypto: x86/curve25519 - Remove unused kpp support
crypto: powerpc/curve25519 - Remove unused kpp support
crypto: arm/curve25519 - Remove unused kpp support
crypto: hisilicon/hpre - Remove unused curve25519 kpp support
lib/crypto: tests: Add KUnit tests for BLAKE2s
lib/crypto: blake2s: Consolidate into single C translation unit
lib/crypto: blake2s: Move generic code into blake2s.c
lib/crypto: blake2s: Always enable arch-optimized BLAKE2s code
lib/crypto: blake2s: Remove obsolete self-test
lib/crypto: x86/blake2s: Reduce size of BLAKE2S_SIGMA2
lib/crypto: chacha: Consolidate into single module
...

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lib/crypto: powerpc/md5: Migrate optimized code into library

Instead of exposing the powerpc-optimized MD5 code via powerpc-specific
crypto_shash algorithms, instead just implement the md5_blocks()

lib/crypto: powerpc/md5: Migrate optimized code into library

Instead of exposing the powerpc-optimized MD5 code via powerpc-specific
crypto_shash algorithms, instead just implement the md5_blocks() library
function. This is much simpler, it makes the MD5 library functions be
powerpc-optimized, and it fixes the longstanding issue where the
powerpc-optimized MD5 code was disabled by default. MD5 still remains
available through crypto_shash, but individual architectures no longer
need to handle it.

Link: https://lore.kernel.org/r/20250805222855.10362-5-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

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