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UPSTREAM: crypto: x86/poly1305 - depend on generic library not generic shash

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Remove the dependency on the generic Poly1305 driver. Instead, depend
on the generic library so that we only reuse code without pulling in
the generic skcipher implementation as well.

While at it, remove the logic that prefers the non-SIMD path for short
inputs - this is no longer necessary after recent FPU handling changes
on x86.

Since this removes the last remaining user of the routines exported
by the generic shash driver, unexport them and make them static.

Signed-off-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
(cherry picked from commit 1b2c6a5120489d41c8ea3b8dacd0b4586289b158)
Bug: 152722841
Signed-off-by: Jason A. Donenfeld <[email protected]>
Change-Id: Ic5e7dbf3cd5b7776f23838e7944db8007517b7bf
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Ard Biesheuvel 2019-11-08 13:22:22 +01:00 • committed by Alexander Martinz
commit 0ed6aaef7a
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4 changed files with 60 additions and 28 deletions
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crypto/Kconfig
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@ -738,7 +738,7 @@ config CRYPTO_POLY1305
config CRYPTO_POLY1305_X86_64
tristate "Poly1305 authenticator algorithm (x86_64/SSE2/AVX2)"
depends on X86 && 64BIT
select CRYPTO_POLY1305
select CRYPTO_LIB_POLY1305_GENERIC
help
Poly1305 authenticator algorithm, RFC7539.