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[GNUnet-SVN] r34954 - gnunet/src/util


From: gnunet
Subject: [GNUnet-SVN] r34954 - gnunet/src/util
Date: Thu, 22 Jan 2015 18:01:11 +0100

Author: harsha
Date: 2015-01-22 18:01:11 +0100 (Thu, 22 Jan 2015)
New Revision: 34954

Modified:
   gnunet/src/util/test_crypto_rsa.c
Log:
-add a check to bail out on false signatures

Modified: gnunet/src/util/test_crypto_rsa.c
===================================================================
--- gnunet/src/util/test_crypto_rsa.c   2015-01-22 14:13:56 UTC (rev 34953)
+++ gnunet/src/util/test_crypto_rsa.c   2015-01-22 17:01:11 UTC (rev 34954)
@@ -56,7 +56,15 @@
   GNUNET_assert (GNUNET_OK ==
                  GNUNET_CRYPTO_rsa_verify (&hash, sig, pub));
   GNUNET_CRYPTO_rsa_signature_free (sig);
+  /* corrupt our hash and see if the signature is still valid */
+  GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK, &hash,
+                              sizeof (struct GNUNET_HashCode));
+  GNUNET_assert (GNUNET_OK != GNUNET_CRYPTO_rsa_verify (&hash,
+                                                        sig,
+                                                        pub));
+  (void) fprintf (stderr, "The above warning is expected.\n");
 
+
   /* test blind signing */
   bkey = GNUNET_CRYPTO_rsa_blinding_key_create (KEY_SIZE);
   bsize = GNUNET_CRYPTO_rsa_blind (&hash,




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