more modifications

Makefile

@@ -1,7 +1,8 @@
-LDFLAGS = -g
-CFLAGS  = -g -Wall -Wextra -Werror
+LDFLAGS = -g -O3
+CFLAGS  = -g -O3 -Wall -Wextra -Werror
 DST     = twenty4
 OBJS    = twenty4.o
+K       = 123456trewqasdfgbvcx
 
 all: $(DST)
 	cd analyze && make
@@ -14,6 +15,30 @@ $(DST): $(OBJS)
 	gcc -c $(CFLAGS) $*.c -o $*.o
 
 clean:
-	rm -f *.o $(DST)
+	rm -f *.o $(DST) *.core
 	cd analyze && make clean
 	cd sbox && make clean
+
+test:
+	sha256 LICENSE | cut -f 4 -d ' ' > .xsum
+	cat LICENSE   | ./$(DST) $(K) X  > .xenc
+	cat .xenc     | ./$(DST) $(K) X  > .xdec
+	sha256 .xdec  | cut -f 4 -d ' '  > .xnsum
+	if test "x`cat .xsum`" = "x`cat .xnsum`"; then echo OK; else echo FAIL; fi
+	rm -f .x*
+	./divtest.sh
+
+rngtest:
+	@dd if=/dev/zero of=zero bs=1024 count=10000
+	@cat zero | ./twenty4 00000000000000000001 1 > x
+
+# my own
+	analyze/analyze x
+	@echo
+
+# ent from: http://www.fourmilab.ch/random/
+	ent x
+	@echo
+
+# dieharder from: https://www.phy.duke.edu/~rgb/General/dieharder.php
+	dd if=/dev/zero of=/dev/stdout | ./twenty4 00000000000000000001 1 | dieharder -g 200 -a