dnswkk: send 64 bit noncei in other data

genreport.c

@@ -47,6 +47,7 @@
 #include <signal.h>
 
 #include <openssl/hmac.h>
+#include <openssl/rand.h>
 
 #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
 #define HMAC_CTX_new() &(_ctx), HMAC_CTX_init(&_ctx)
@@ -1854,9 +1855,12 @@ dotest(struct workitem *item, int usec) {
 		dp = cp;
 		ns_put16(0, cp);			/* error */
 		cp += 2;
-		ns_put16(0, cp);			/* other len */
+		ns_put16(8, cp);			/* other len */
 		cp += 2;
-		/* no other data */
+		if (RAND_bytes(cp, 8) != 1) { 		/* other data */
+			memset(cp, 0, 8);
+		}
+		cp += 8;
 		if (!HMAC_Update(hmctx, dp, cp - dp))	/* error, other len */
 			goto error;
 		if (!HMAC_Final(hmctx, item->mac, NULL))