This series implements the crypto library abstractions that are needed to incorporate WireGuard into the mainline kernel. Changes since v2: - Reduce the cc: audience a bit, since I assumed that not everyone is interested in discussing the details of this. - Incorporate scalar ARM code for ChaCha, and the 64-bit MIPS code for Poly1305. NOTE: the Cryptogams MIPS code now supports 32-bit MIPS as well, and not just 32r2, so I omitted Rene's Poly1305 implementation for now, and used Andy's code for everything. - Incorporate NEON opt-out for Cortex-A5/A7. Note that the code is still exposed via the crypto API, but with a low prioririty, so it is still available and still gets test coverage, but is not used by default. - Use static keys (*not* static calls) in the SIMD and bmi2/adx drivers to keep track of which implementation is being used, to avoid the memory load on each call. - Defer using weak references or static calls until the dust around this has settled. Instead, rely on Kconfig constraints and symbol dependencies to ensure that the arch code is always used when it is loaded. This means you can only opt out of using the arch code if you disable it in Kconfig but this is something I can live with for now. - Refactor the Curve25519 glue code slightly so that the call sites branch to the arch or generic code directly. - Split up the Poly1305 refactoring patches so they can be reviewed more easily. Changes since RFC/v1: - dropped the WireGuard patch itself, and the followup patches - since the purpose was to illustrate the extent of the required changes, there is no reason to keep including them. - import the MIPS 32r2 versions of ChaCha and Poly1305, but expose both the crypto API and library interfaces so that not only WireGuard but also IPsec and Adiantum can benefit immediately. (The latter required adding support for the reduced round version of ChaCha to the MIPS asm code) - fix up various minor kconfig/build issues found in randconfig testing (thanks Arnd!) Patches can be found here: https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/log/?h=wireguard-crypto-library-api-v3 Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Cc: David Miller <davem@xxxxxxxxxxxxx> Cc: Jason A. Donenfeld <Jason@xxxxxxxxx> Cc: Samuel Neves <sneves@xxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Eric Biggers <ebiggers@xxxxxxxxxx> Cc: Andy Lutomirski <luto@xxxxxxxxxx> Cc: Martin Willi <martin@xxxxxxxxxxxxxx> Cc: Rene van Dorst <opensource@xxxxxxxxxx> Ard Biesheuvel (23): crypto: chacha - move existing library code into lib/crypto crypto: x86/chacha - depend on generic chacha library instead of crypto driver crypto: x86/chacha - expose SIMD ChaCha routine as library function crypto: arm64/chacha - depend on generic chacha library instead of crypto driver crypto: arm64/chacha - expose arm64 ChaCha routine as library function crypto: arm/chacha - import Eric Biggers's scalar accelerated ChaCha code crypto: arm/chacha - remove dependency on generic ChaCha driver crypto: arm/chacha - expose ARM ChaCha routine as library function crypto: mips/chacha - import 32r2 ChaCha code from Zinc crypto: mips/chacha - wire up accelerated 32r2 code from Zinc crypto: chacha - unexport chacha_generic routines crypto: poly1305 - move core routines into a separate library crypto: x86/poly1305 - unify Poly1305 state struct with generic code crypto: poly1305 - expose init/update/final library interface crypto: x86/poly1305 - depend on generic library not generic shash crypto: x86/poly1305 - expose existing driver as poly1305 library crypto: arm64/poly1305 - incorporate OpenSSL/CRYPTOGAMS NEON implementation crypto: arm/poly1305 - incorporate OpenSSL/CRYPTOGAMS NEON implementation crypto: mips/poly1305 - incorporate OpenSSL/CRYPTOGAMS optimized implementation int128: move __uint128_t compiler test to Kconfig crypto: lib/curve25519 - work around Clang stack spilling issue crypto: chacha20poly1305 - import construction and selftest from Zinc crypto: lib/chacha20poly1305 - reimplement crypt_from_sg() routine Jason A. Donenfeld (6): crypto: BLAKE2s - generic C library implementation and selftest crypto: BLAKE2s - x86_64 library implementation crypto: Curve25519 - generic C library implementations and selftest crypto: Curve25519 - x86_64 library implementation crypto: arm - import Bernstein and Schwabe's Curve25519 ARM implementation crypto: arm/Curve25519 - wire up NEON implementation arch/arm/crypto/Kconfig | 16 +- arch/arm/crypto/Makefile | 16 +- arch/arm/crypto/chacha-glue.c | 385 + arch/arm/crypto/chacha-neon-glue.c | 202 - arch/arm/crypto/chacha-scalar-core.S | 460 ++ arch/arm/crypto/curve25519-core.S | 2062 ++++++ arch/arm/crypto/curve25519-glue.c | 52 + arch/arm/crypto/poly1305-armv4.pl | 1236 ++++ arch/arm/crypto/poly1305-core.S_shipped | 1158 +++ arch/arm/crypto/poly1305-glue.c | 273 + arch/arm64/Kconfig | 2 +- arch/arm64/crypto/Kconfig | 9 +- arch/arm64/crypto/Makefile | 10 +- arch/arm64/crypto/chacha-neon-glue.c | 99 +- arch/arm64/crypto/poly1305-armv8.pl | 913 +++ arch/arm64/crypto/poly1305-core.S_shipped | 835 +++ arch/arm64/crypto/poly1305-glue.c | 239 + arch/mips/Makefile | 2 +- arch/mips/crypto/Makefile | 18 + arch/mips/crypto/chacha-core.S | 497 ++ arch/mips/crypto/chacha-glue.c | 162 + arch/mips/crypto/poly1305-glue.c | 203 + arch/mips/crypto/poly1305-mips.pl | 1246 ++++ arch/riscv/Kconfig | 2 +- arch/x86/Kconfig | 2 +- arch/x86/crypto/Makefile | 3 + arch/x86/crypto/blake2s-core.S | 685 ++ arch/x86/crypto/blake2s-glue.c | 85 + arch/x86/crypto/chacha_glue.c | 167 +- arch/x86/crypto/curve25519-x86_64.c | 2384 +++++++ arch/x86/crypto/poly1305_glue.c | 200 +- crypto/Kconfig | 87 +- crypto/adiantum.c | 5 +- crypto/chacha_generic.c | 80 +- crypto/ecc.c | 2 +- crypto/nhpoly1305.c | 3 +- crypto/poly1305_generic.c | 228 +- include/crypto/blake2s.h | 56 + include/crypto/chacha.h | 54 +- include/crypto/chacha20poly1305.h | 48 + include/crypto/curve25519.h | 69 + include/crypto/internal/chacha.h | 31 + include/crypto/internal/poly1305.h | 67 + include/crypto/poly1305.h | 43 +- init/Kconfig | 4 + lib/Makefile | 3 +- lib/crypto/Makefile | 40 +- lib/crypto/blake2s-selftest.c | 2093 ++++++ lib/crypto/blake2s.c | 281 + lib/{ => crypto}/chacha.c | 25 +- lib/crypto/chacha20poly1305-selftest.c | 7393 ++++++++++++++++++++ lib/crypto/chacha20poly1305.c | 369 + lib/crypto/curve25519-fiat32.c | 864 +++ lib/crypto/curve25519-hacl64.c | 788 +++ lib/crypto/curve25519-selftest.c | 1321 ++++ lib/crypto/curve25519.c | 41 + lib/crypto/libchacha.c | 49 + lib/crypto/poly1305.c | 248 + lib/ubsan.c | 2 +- lib/ubsan.h | 2 +- 60 files changed, 27185 insertions(+), 734 deletions(-) create mode 100644 arch/arm/crypto/chacha-glue.c delete mode 100644 arch/arm/crypto/chacha-neon-glue.c create mode 100644 arch/arm/crypto/chacha-scalar-core.S create mode 100644 arch/arm/crypto/curve25519-core.S create mode 100644 arch/arm/crypto/curve25519-glue.c create mode 100644 arch/arm/crypto/poly1305-armv4.pl create mode 100644 arch/arm/crypto/poly1305-core.S_shipped create mode 100644 arch/arm/crypto/poly1305-glue.c create mode 100644 arch/arm64/crypto/poly1305-armv8.pl create mode 100644 arch/arm64/crypto/poly1305-core.S_shipped create mode 100644 arch/arm64/crypto/poly1305-glue.c create mode 100644 arch/mips/crypto/chacha-core.S create mode 100644 arch/mips/crypto/chacha-glue.c create mode 100644 arch/mips/crypto/poly1305-glue.c create mode 100644 arch/mips/crypto/poly1305-mips.pl create mode 100644 arch/x86/crypto/blake2s-core.S create mode 100644 arch/x86/crypto/blake2s-glue.c create mode 100644 arch/x86/crypto/curve25519-x86_64.c create mode 100644 include/crypto/blake2s.h create mode 100644 include/crypto/chacha20poly1305.h create mode 100644 include/crypto/curve25519.h create mode 100644 include/crypto/internal/chacha.h create mode 100644 include/crypto/internal/poly1305.h create mode 100644 lib/crypto/blake2s-selftest.c create mode 100644 lib/crypto/blake2s.c rename lib/{ => crypto}/chacha.c (84%) create mode 100644 lib/crypto/chacha20poly1305-selftest.c create mode 100644 lib/crypto/chacha20poly1305.c create mode 100644 lib/crypto/curve25519-fiat32.c create mode 100644 lib/crypto/curve25519-hacl64.c create mode 100644 lib/crypto/curve25519-selftest.c create mode 100644 lib/crypto/curve25519.c create mode 100644 lib/crypto/libchacha.c create mode 100644 lib/crypto/poly1305.c -- 2.20.1
