Upgrade crapto1 library to v3.3 (#232)

- fix standalone tools mfkey32, mfkey64 and nonce2key to use common crapto1 library
- fix compiler warnings in tools/mfkey/mfkey64.c and tools/nonce2key/nonce2key.c
- allow crapto1.c to compile on ARM hosts
- add @iceman1001's readme.txt to tools/mfkey

tools/mfkey/Makefile

@@ -1,17 +1,20 @@
+VPATH = ../../common/crapto1
 CC = gcc
 LD = gcc
-CFLAGS = -Wall -Winline -O4
+CFLAGS = -I../../common -Wall -O4
 LDFLAGS =
 
-OBJS = crapto1.o crypto1.o
-HEADERS = 
-EXES = mfkey64 mfkey32
-LIBS =
-	
-all: $(OBJS) $(EXES) $(LIBS)
+OBJS = crypto1.o crapto1.o
+EXES = mfkey32 mfkey64
+WINEXES = $(patsubst %, %.exe, $(EXES))
 
-% : %.c $(OBJS)
-	$(LD) $(CFLAGS) -o $@ $< $(OBJS) $(LDFLAGS)
+all: $(OBJS) $(EXES)
+
+%.o : %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+% : %.c
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $<
 
 clean: 
-	rm -f $(OBJS) $(EXES) $(LIBS) 
+	rm -f $(OBJS) $(EXES) $(WINEXES)

tools/mfkey/mfkey32.c

@@ -1,5 +1,5 @@
 #include <inttypes.h>
-#include "crapto1.h"
+#include "crapto1/crapto1.h"
 #include <stdio.h>
 #include <stdlib.h>
 

tools/mfkey/mfkey64.c

@@ -1,5 +1,5 @@
 #include <inttypes.h>
-#include "crapto1.h"
+#include "crapto1/crapto1.h"
 #include <stdio.h>
 #include <string.h>
 
@@ -34,7 +34,7 @@ int main (int argc, char *argv[]) {
   for (int i = 0; i < encc; i++) {
     enclen[i] = strlen(argv[i + 6]) / 2;
     for (int i2 = 0; i2 < enclen[i]; i2++) {
-      sscanf(argv[i+6] + i2*2,"%2x", (uint8_t*)&enc[i][i2]);
+      sscanf(argv[i+6] + i2*2,"%2x", (unsigned int *)&enc[i][i2]);
     }
   }
   printf("Recovering key for:\n");