Provide ECDH_size().

"jajaja" miod@

1 files changed, 7 insertions, 1 deletions

diff --git a/src/lib/libcrypto/ecdh/ech_lib.c b/src/lib/libcrypto/ecdh/ech_lib.c
index 579dfc4b4f..bb70d2d95f 100644
--- a/src/lib/libcrypto/ecdh/ech_lib.c
+++ b/src/lib/libcrypto/ecdh/ech_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ech_lib.c,v 1.10 2015/09/13 10:46:20 jsing Exp $ */
+/* $OpenBSD: ech_lib.c,v 1.11 2015/09/13 12:03:07 jsing Exp $ */
 /* ====================================================================
  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  *
@@ -239,3 +239,9 @@ ECDH_get_ex_data(EC_KEY *d, int idx)
                 return NULL;
         return (CRYPTO_get_ex_data(&ecdh->ex_data, idx));
 }
+
+int
+ECDH_size(const EC_KEY *d)
+{
+        return ((EC_GROUP_get_degree(EC_KEY_get0_group(d)) + 7) / 8);
+}