1 files changed, 13 insertions, 1 deletions
diff --git a/src/test/test_crypto.c b/src/test/test_crypto.c
index dd9a3765f6..e981eac602 100644
--- a/src/test/test_crypto.c
+++ b/src/test/test_crypto.c
@@ -58,7 +58,6 @@ test_crypto_dh(void *arg)
   tt_int_op(s1len,OP_EQ, s2len);
   tt_mem_op(s1,OP_EQ, s2, s1len);
 
-
   /* test dh_dup; make sure it works the same. */
   dh1_dup = crypto_dh_dup(dh1);
   s1len = crypto_dh_compute_secret(LOG_WARN, dh1_dup, p2, DH_BYTES, s1, 50);
@@ -132,6 +131,19 @@ test_crypto_dh(void *arg)
     tt_int_op(-1, OP_EQ, s1len);
   }
 
+  {
+    /* provoke an error in the openssl DH_compute_key function; make sure we
+     * survive. */
+    tt_assert(! crypto_dh_get_public(dh1, p1, DH_BYTES));
+
+    crypto_dh_free(dh2);
+    dh2= crypto_dh_new(DH_TYPE_CIRCUIT); /* no private key set */
+    s1len = crypto_dh_compute_secret(LOG_WARN, dh2,
+                                     p1, DH_BYTES,
+                                     s1, 50);
+    tt_int_op(s1len, OP_EQ, -1);
+  }
+
  done:
   crypto_dh_free(dh1);
   crypto_dh_free(dh2);