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path: root/include/crypto/curve25519.h
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2020-11-20crypto: lib/curve25519 - Move selftest prototype into header fileHerbert Xu
This patch moves the curve25519_selftest into curve25519.h so we don't get a warning from gcc complaining about a missing prototype. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-04-09crypto: curve25519 - do not pollute dispatcher based on assemblerJason A. Donenfeld
Since we're doing a static inline dispatch here, we normally branch based on whether or not there's an arch implementation. That would have been fine in general, except the crypto Makefile prior used to turn things off -- despite the Kconfig -- resulting in us needing to also hard code various assembler things into the dispatcher too. The horror! Now that the assembler config options are done by Kconfig, we can get rid of the inconsistency. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-03-05crypto: x86/curve25519 - support assemblers with no adx supportJason A. Donenfeld
Some older version of GAS do not support the ADX instructions, similarly to how they also don't support AVX and such. This commit adds the same build-time detection mechanisms we use for AVX and others for ADX, and then makes sure that the curve25519 library dispatcher calls the right functions. Reported-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-11-17crypto: curve25519 - generic C library implementationsJason A. Donenfeld
This contains two formally verified C implementations of the Curve25519 scalar multiplication function, one for 32-bit systems, and one for 64-bit systems whose compiler supports efficient 128-bit integer types. Not only are these implementations formally verified, but they are also the fastest available C implementations. They have been modified to be friendly to kernel space and to be generally less horrendous looking, but still an effort has been made to retain their formally verified characteristic, and so the C might look slightly unidiomatic. The 64-bit version comes from HACL*: https://github.com/project-everest/hacl-star The 32-bit version comes from Fiat: https://github.com/mit-plv/fiat-crypto Information: https://cr.yp.to/ecdh.html Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> [ardb: - move from lib/zinc to lib/crypto - replace .c #includes with Kconfig based object selection - drop simd handling and simplify support for per-arch versions ] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>