Crypto library updates for 6.19

The following changes since commit dcb6fa37fd7bc9c3d2b066329b0d27dedf8becaa:

Linux 6.18-rc3 (2025-10-26 15:59:49 -0700)

are available in the Git repository at:

https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git tags/libcrypto-updates-for-linus

for you to fetch changes up to 2dbb6f4a25d38fcf7d6c1c682e45a13e6bbe9562:

fscrypt: Drop obsolete recommendation to enable optimized POLYVAL (2025-11-11 11:03:39 -0800)

----------------------------------------------------------------

This is the main crypto library pull request for 6.19. It includes:

- Add SHA-3 support to lib/crypto/, including support for both the hash functions and the extendable-output functions. Reimplement the existing SHA-3 crypto_shash support on top of the library.

This is motivated mainly by the upcoming support for the ML-DSA signature algorithm, which needs the SHAKE128 and SHAKE256 functions. But even on its own it's a useful cleanup.

This also fixes the longstanding issue where the architecture-optimized SHA-3 code was disabled by default.

- Add BLAKE2b support to lib/crypto/, and reimplement the existing BLAKE2b crypto_shash support on top of the library.

This is motivated mainly by btrfs, which supports BLAKE2b checksums. With this change, all btrfs checksum algorithms now have library APIs. btrfs is planned to start just using the library directly.

This refactor also improves consistency between the BLAKE2b code and BLAKE2s code. And as usual, it also fixes the issue where the architecture-optimized BLAKE2b code was disabled by default.

- Add POLYVAL support to lib/crypto/, replacing the existing POLYVAL support in crypto_shash. Reimplement HCTR2 on top of the library.

This simplifies the code and improves HCTR2 performance. As usual, it also makes the architecture-optimized code be enabled by default. The generic implementation of POLYVAL is greatly improved as well.

- Clean up the BLAKE2s code.

- Add FIPS self-tests for SHA-1, SHA-2, and SHA-3.

----------------------------------------------------------------
David Howells (4):
crypto: s390/sha3 - Rename conflicting functions
crypto: arm64/sha3 - Rename conflicting function lib/crypto: sha3: Add SHA-3 support
lib/crypto: sha3: Move SHA3 Iota step mapping into round function

Eric Biggers (33):
lib/crypto: Add FIPS self-tests for SHA-1 and SHA-2 lib/crypto: blake2s: Adjust parameter order of blake2s() lib/crypto: blake2s: Rename blake2s_state to blake2s_ctx lib/crypto: blake2s: Drop excessive const & rename block => data lib/crypto: blake2s: Document the BLAKE2s library API
byteorder: Add le64_to_cpu_array() and cpu_to_le64_array() lib/crypto: blake2b: Add BLAKE2b library functions lib/crypto: arm/blake2b: Migrate optimized code into library
crypto: blake2b - Reimplement using library API lib/crypto: sha3: Add FIPS cryptographic algorithm self-test
crypto: arm64/sha3 - Update sha3_ce_transform() to prepare for library lib/crypto: arm64/sha3: Migrate optimized code into library lib/crypto: s390/sha3: Add optimized Keccak functions lib/crypto: sha3: Support arch overrides of one-shot digest functions lib/crypto: s390/sha3: Add optimized one-shot SHA-3 digest functions
crypto: jitterentropy - Use default sha3 implementation
crypto: sha3 - Reimplement using library API
crypto: s390/sha3 - Remove superseded SHA-3 code lib/crypto: arm/blake2s: Fix some comments
lib/crypto: arm, arm64: Drop filenames from file comments lib/crypto: x86/blake2s: Fix 32-bit arg treated as 64-bit lib/crypto: x86/blake2s: Drop check for nblocks == 0 lib/crypto: x86/blake2s: Use local labels for data lib/crypto: x86/blake2s: Improve readability
lib/crypto: x86/blake2s: Avoid writing back unchanged 'f' value lib/crypto: x86/blake2s: Use vpternlogd for 3-input XORs
crypto: polyval - Rename conflicting functions
lib/crypto: polyval: Add POLYVAL library
lib/crypto: arm64/polyval: Migrate optimized code into library lib/crypto: x86/polyval: Migrate optimized code into library
crypto: hctr2 - Convert to use POLYVAL library
crypto: polyval - Remove the polyval crypto_shash
fscrypt: Drop obsolete recommendation to enable optimized POLYVAL

 Documentation/crypto/index.rst                     |   1 +
 Documentation/crypto/sha3.rst                      | 119 ++++++
 Documentation/filesystems/fscrypt.rst              |   2 -
 arch/arm/crypto/Kconfig                            |  16 -
 arch/arm/crypto/Makefile                           |   2 -
 arch/arm/crypto/blake2b-neon-glue.c                | 104 ------
 arch/arm64/configs/defconfig                       |   2 +-
 arch/arm64/crypto/Kconfig                          |  21 --
 arch/arm64/crypto/Makefile                         |   6 -
 arch/arm64/crypto/polyval-ce-glue.c                | 158 --------
 arch/arm64/crypto/sha3-ce-glue.c                   | 151 --------
 arch/s390/configs/debug_defconfig                  |   3 +-
 arch/s390/configs/defconfig                        |   3 +-
 arch/s390/crypto/Kconfig                           |  20 -
 arch/s390/crypto/Makefile                          |   2 -
 arch/s390/crypto/sha.h                             |  51 ---
 arch/s390/crypto/sha3_256_s390.c                   | 157 --------
 arch/s390/crypto/sha3_512_s390.c                   | 157 --------
 arch/s390/crypto/sha_common.c                      | 117 ------
 arch/x86/crypto/Kconfig                            |  10 -
 arch/x86/crypto/Makefile                           |   3 -
 arch/x86/crypto/polyval-clmulni_glue.c             | 180 ---------
 crypto/Kconfig                                     |  14 +-
 crypto/Makefile                                    |   6 +-
 crypto/blake2b.c                                   | 111 ++++++
 crypto/blake2b_generic.c                           | 192 ----------
 crypto/hctr2.c                                     | 226 ++++-------
 crypto/jitterentropy-kcapi.c                       |  12 +-
 crypto/polyval-generic.c                           | 205 ----------
 crypto/sha3.c                                      | 166 +++++++++
 crypto/sha3_generic.c                              | 290 ---------------
 crypto/testmgr.c                                   |  15 +-
 drivers/char/random.c                              |   6 +-
 drivers/net/wireguard/cookie.c                     |  18 +-
 drivers/net/wireguard/noise.c                      |  32 +-
 include/crypto/blake2b.h                           | 143 +++++--
 include/crypto/blake2s.h                           | 126 +++++--
 include/crypto/internal/blake2b.h                  | 101 -----
 include/crypto/polyval.h                           | 182 ++++++++-
 include/crypto/sha3.h                              | 320 +++++++++++++++-
 include/linux/byteorder/generic.h                  |  16 +
 lib/crypto/Kconfig                                 |  36 ++
 lib/crypto/Makefile                                |  30 ++
 .../crypto => lib/crypto/arm}/blake2b-neon-core.S  |  29 +-
 lib/crypto/arm/blake2b.h                           |  41 ++
 lib/crypto/arm/blake2s-core.S                      |  22 +-
 lib/crypto/arm/blake2s.h                           |   4 +-
 lib/crypto/arm/sha1-armv7-neon.S                   |   2 +-
 lib/crypto/arm/sha1-ce-core.S                      |   2 +-
 lib/crypto/arm/sha256-ce.S                         |   2 +-
 .../crypto => lib/crypto/arm64}/polyval-ce-core.S  |  38 +-
 lib/crypto/arm64/polyval.h                         |  82 ++++
 lib/crypto/arm64/sha1-ce-core.S                    |   2 +-
 lib/crypto/arm64/sha256-ce.S                       |   2 +-
 .../crypto => lib/crypto/arm64}/sha3-ce-core.S     |  69 ++--
 lib/crypto/arm64/sha3.h                            |  62 ++++
 lib/crypto/arm64/sha512-ce-core.S                  |   2 +-
 lib/crypto/blake2b.c                               | 174 +++++++++
 lib/crypto/blake2s.c                               |  66 ++--
 lib/crypto/fips.h                                  |  45 +++
 lib/crypto/polyval.c                               | 307 +++++++++++++++
 lib/crypto/s390/sha3.h                             | 151 ++++++++
 lib/crypto/sha1.c                                  |  19 +-
 lib/crypto/sha256.c                                |  26 +-
 lib/crypto/sha3.c                                  | 411 +++++++++++++++++++++
 lib/crypto/sha512.c                                |  19 +-
 lib/crypto/tests/blake2s_kunit.c                   |  39 +-
 lib/crypto/x86/blake2s-core.S                      | 275 ++++++++------
 lib/crypto/x86/blake2s.h                           |  22 +-
 .../crypto/x86/polyval-pclmul-avx.S                |  40 +-
 lib/crypto/x86/polyval.h                           |  83 +++++
 scripts/crypto/gen-fips-testvecs.py                |  36 ++
 72 files changed, 3076 insertions(+), 2528 deletions(-)
 create mode 100644 Documentation/crypto/sha3.rst
 delete mode 100644 arch/arm/crypto/blake2b-neon-glue.c
 delete mode 100644 arch/arm64/crypto/polyval-ce-glue.c
 delete mode 100644 arch/arm64/crypto/sha3-ce-glue.c
 delete mode 100644 arch/s390/crypto/sha.h
 delete mode 100644 arch/s390/crypto/sha3_256_s390.c
 delete mode 100644 arch/s390/crypto/sha3_512_s390.c
 delete mode 100644 arch/s390/crypto/sha_common.c
 delete mode 100644 arch/x86/crypto/polyval-clmulni_glue.c
 create mode 100644 crypto/blake2b.c
 delete mode 100644 crypto/blake2b_generic.c
 delete mode 100644 crypto/polyval-generic.c
 create mode 100644 crypto/sha3.c
 delete mode 100644 crypto/sha3_generic.c
 delete mode 100644 include/crypto/internal/blake2b.h
 rename {arch/arm/crypto => lib/crypto/arm}/blake2b-neon-core.S (94%)
 create mode 100644 lib/crypto/arm/blake2b.h
 rename {arch/arm64/crypto => lib/crypto/arm64}/polyval-ce-core.S (92%)
 create mode 100644 lib/crypto/arm64/polyval.h
 rename {arch/arm64/crypto => lib/crypto/arm64}/sha3-ce-core.S (83%)
 create mode 100644 lib/crypto/arm64/sha3.h
 create mode 100644 lib/crypto/blake2b.c
 create mode 100644 lib/crypto/fips.h
 create mode 100644 lib/crypto/polyval.c
 create mode 100644 lib/crypto/s390/sha3.h
 create mode 100644 lib/crypto/sha3.c
 rename arch/x86/crypto/polyval-clmulni_asm.S => lib/crypto/x86/polyval-pclmul-avx.S (91%)
 create mode 100644 lib/crypto/x86/polyval.h
 create mode 100755 scripts/crypto/gen-fips-testvecs.py