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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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3
crypto/nhpoly1305.c
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@ -33,6 +33,7 @@
#include <asm/unaligned.h>
#include <crypto/algapi.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/poly1305.h>
#include <crypto/nhpoly1305.h>
#include <linux/crypto.h>
#include <linux/kernel.h>
@ -78,7 +79,7 @@ static void process_nh_hash_value(struct nhpoly1305_state *state,
BUILD_BUG_ON(NH_HASH_BYTES % POLY1305_BLOCK_SIZE != 0);
poly1305_core_blocks(&state->poly_state, &key->poly_key, state->nh_hash,
NH_HASH_BYTES / POLY1305_BLOCK_SIZE);
NH_HASH_BYTES / POLY1305_BLOCK_SIZE, 1);
}
/*