From 17f3f4a7c86edc7f0cb3ab1e732e609d6467ca5a Mon Sep 17 00:00:00 2001
From: Nicolai Stange <nstange@suse.de>
Date: Fri, 19 Nov 2021 13:31:01 +0100
Subject: [PATCH 14/18] lib/mpi: export mpi_rshift
References: jsc#SLE-21132,bsc#1191256
Patch-mainline: Submitted, linux-crypto ML

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(+)

--- a/lib/mpi/mpi-bit.c
+++ b/lib/mpi/mpi-bit.c
@@ -242,6 +242,7 @@ void mpi_rshift(MPI x, MPI a, unsigned i
 	}
 	MPN_NORMALIZE(x->d, x->nlimbs);
 }
+EXPORT_SYMBOL_GPL(mpi_rshift);
 
 /****************
  * Shift A by COUNT limbs to the left