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UPSTREAM: crypto: poly1305 - move core routines into a separate library

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Move the core Poly1305 routines shared between the generic Poly1305
shash driver and the Adiantum and NHPoly1305 drivers into a separate
library so that using just this pieces does not pull in the crypto
API pieces of the generic Poly1305 routine.

In a subsequent patch, we will augment this generic library with
init/update/final routines so that Poyl1305 algorithm can be used
directly without the need for using the crypto API's shash abstraction.

Signed-off-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
(cherry picked from commit 48ea8c6ebc96bc0990e12ee1c43d0832c23576bb)
Bug: 152722841
Signed-off-by: Jason A. Donenfeld <[email protected]>
Change-Id: I18d03588a3a62e5b3667bfab4c8032f581c98f6a
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Ard Biesheuvel 2019-11-08 13:22:19 +01:00 • committed by Alexander Martinz
commit cc6aec0f93
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10 changed files with 248 additions and 216 deletions
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5
crypto/Kconfig
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@ -446,7 +446,7 @@ config CRYPTO_KEYWRAP
config CRYPTO_NHPOLY1305
tristate
select CRYPTO_HASH
select CRYPTO_POLY1305
select CRYPTO_LIB_POLY1305_GENERIC
config CRYPTO_NHPOLY1305_SSE2
tristate "NHPoly1305 hash function (x86_64 SSE2 implementation)"
@ -467,7 +467,7 @@ config CRYPTO_NHPOLY1305_AVX2
config CRYPTO_ADIANTUM
tristate "Adiantum support"
select CRYPTO_CHACHA20
select CRYPTO_POLY1305
select CRYPTO_LIB_POLY1305_GENERIC
select CRYPTO_NHPOLY1305
select CRYPTO_MANAGER
help
@ -727,6 +727,7 @@ config CRYPTO_GHASH
config CRYPTO_POLY1305
tristate "Poly1305 authenticator algorithm"
select CRYPTO_HASH
select CRYPTO_LIB_POLY1305_GENERIC
help
Poly1305 authenticator algorithm, RFC7539.