From 70af2165ec2512b847251e1e3ff543c100e137ab Mon Sep 17 00:00:00 2001
From: NIIBE Yutaka <gniibe@fsij.org>
Date: Mon, 4 May 2020 19:00:38 +0900
Subject: [PATCH] ecc-sos: Fix gpg_mpi_write for opaque bit string.

* g10/build-packet.c (gpg_mpi_write): Handle opaque bit string
when it's has exact number of bits.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
---
 g10/build-packet.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/g10/build-packet.c b/g10/build-packet.c
index 99ff69722..2e100f179 100644
--- a/g10/build-packet.c
+++ b/g10/build-packet.c
@@ -306,6 +306,7 @@ gpg_mpi_write (iobuf_t out, gcry_mpi_t a, unsigned int *r_nwritten)
       p = gcry_mpi_get_opaque (a, &nbits);
       if (p)
         {
+          nbits = ((nbits + 7)/8)*8;
           /* Strip leading zero bits.  */
           for (; nbits >= 8 && !*p; p++, nbits -= 8)
             ;