Use Huffman code in BLISS signature

2014-12-12 12:00:20 +01:00
parent 9394e26426
commit 83447555a6
7 changed files with 296 additions and 38 deletions
@@ -369,14 +369,19 @@ static bool sign_bliss_with_sha512(private_bliss_private_key_t *this,
 		{
 			continue;
 		}
+
+		*signature = sig->get_encoding(sig);
+		if (signature->len == 0)
+		{
+			DBG1(DBG_LIB, "inefficient Huffman coding of signature");
+			continue;
+		}
 		DBG2(DBG_LIB, "signature generation needed %u round%s", tests,
 					  (tests == 1) ? "" : "s");
 		break;
 	}
 	success = TRUE;

-	*signature = sig->get_encoding(sig);
-
 end:
 	/* cleanup */
 	sampler->destroy(sampler);