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authorJason A. Donenfeld <Jason@zx2c4.com>2019-11-08 13:22:36 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2019-11-17 09:02:44 +0800
commitbb611bdfd6be34d9f822c73305fcc83720499d38 (patch)
tree05783c7bbd26536e86bc5c004416fdb2d7e9d034 /crypto
parent660bb8e1f833ea63185fe80fde847e3e42f18e3b (diff)
downloadlinux-bb611bdfd6be34d9f822c73305fcc83720499d38.tar.bz2
crypto: curve25519 - x86_64 library and KPP implementations
This implementation is the fastest available x86_64 implementation, and unlike Sandy2x, it doesn't requie use of the floating point registers at all. Instead it makes use of BMI2 and ADX, available on recent microarchitectures. The implementation was written by Armando Faz-Hernández with contributions (upstream) from Samuel Neves and me, in addition to further changes in the kernel implementation from us. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Samuel Neves <sneves@dei.uc.pt> Co-developed-by: Samuel Neves <sneves@dei.uc.pt> [ardb: - move to arch/x86/crypto - wire into lib/crypto framework - implement crypto API KPP hooks ] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index fab259d9d056..472c2ad36063 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -269,6 +269,12 @@ config CRYPTO_CURVE25519
select CRYPTO_KPP
select CRYPTO_LIB_CURVE25519_GENERIC
+config CRYPTO_CURVE25519_X86
+ tristate "x86_64 accelerated Curve25519 scalar multiplication library"
+ depends on X86 && 64BIT
+ select CRYPTO_LIB_CURVE25519_GENERIC
+ select CRYPTO_ARCH_HAVE_LIB_CURVE25519
+
comment "Authenticated Encryption with Associated Data"
config CRYPTO_CCM