From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 28 May 2018 11:04:11 +0000 (+0200)
Subject: add patch from Niibe Yutaka for
X-Git-Tag: v0.11.0pre66~36^2
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=a46fff931d631a176f56547692b16ae32c89299b;p=oweals%2Fgnunet.git

add patch from Niibe Yutaka for
#5328
---

diff --git a/src/util/crypto_ecc.c b/src/util/crypto_ecc.c
index 1abf0fddc..8d9091b23 100644
--- a/src/util/crypto_ecc.c
+++ b/src/util/crypto_ecc.c
@@ -1281,6 +1281,16 @@ eddsa_d_to_a (gcry_mpi_t d)
                  gcry_mpi_print (GCRYMPI_FMT_USG,
 				 rawmpi, rawmpilen, &rawmpilen,
                                  d));
+  if (rawmpilen < 32)
+  {
+    memmove (rawmpi + 32 - rawmpilen,
+             rawmpi,
+             rawmpilen);
+    memset (rawmpi,
+            0,
+            32 - rawmpilen);
+    rawmpilen = 32;
+  }
   hvec[0].data = digest;
   hvec[0].off = 0;
   hvec[0].len = b > rawmpilen ? (b - rawmpilen) : 0;