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From:   Nicolai Stange <nstange@suse.de>
To:     Herbert Xu <herbert@gondor.apana.org.au>,
        "David S. Miller" <davem@davemloft.net>
Cc:     =?UTF-8?q?Stephan=20M=C3=BCller?= <smueller@chronox.de>,
        Hannes Reinecke <hare@suse.de>, Torsten Duwe <duwe@suse.de>,
        David Howells <dhowells@redhat.com>,
        Jarkko Sakkinen <jarkko@kernel.org>,
        linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
        keyrings@vger.kernel.org, Nicolai Stange <nstange@suse.de>
Subject: [PATCH v3 14/15] lib/mpi: export mpi_rshift
Date:   Wed,  2 Feb 2022 11:40:11 +0100
Message-Id: <20220202104012.4193-15-nstange@suse.de>
In-Reply-To: <20220202104012.4193-1-nstange@suse.de>
References: <20220202104012.4193-1-nstange@suse.de>
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A subsequent patch will make the crypto/dh's dh_is_pubkey_valid() to
calculate a safe-prime groups Q parameter from P: Q = (P - 1) / 2. For
implementing this, mpi_rshift() will be needed. Export it so that it's
accessible from crypto/dh.

Signed-off-by: Nicolai Stange <nstange@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
 lib/mpi/mpi-bit.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/mpi/mpi-bit.c b/lib/mpi/mpi-bit.c
index 142b680835df..070ba784c9f1 100644
--- a/lib/mpi/mpi-bit.c
+++ b/lib/mpi/mpi-bit.c
@@ -242,6 +242,7 @@ void mpi_rshift(MPI x, MPI a, unsigned int n)
 	}
 	MPN_NORMALIZE(x->d, x->nlimbs);
 }
+EXPORT_SYMBOL_GPL(mpi_rshift);
 
 /****************
  * Shift A by COUNT limbs to the left
-- 
2.26.2