Box: added LAIKA_BOX_SKID, vmTest now uses the LAIKA_BOX_SKID box

- updated CONTRIB

tools/vmtest/src/main.c

@@ -5,39 +5,17 @@
 #include "lbox.h"
 
 /* VM BOX Demo:
-    A secret message has been xor'd, this tiny bytecode chunk decodes 'data' into 
-    'unlockedData'. Obviously you wouldn't want a key this simple, more obfuscation
-    would be good (byte swapping, revolving xor key, etc.)
+    A secret message has been xor'd, the BOX_SKID is used to decode the message.
 */ 
 
 int main(int argv, char **argc) {
     uint8_t data[] = {
         0x96, 0xBB, 0xB2, 0xB2, 0xB1, 0xFE, 0x89, 0xB1,
-        0xAC, 0xB2, 0xBA, 0xFF, 0xDE, 0x20, 0xEA, 0xBA, 
+        0xAC, 0xB2, 0xBA, 0xFF, 0xDE, 0x20, 0xEA, 0xBA, /* you can see the key here, 0xDE ^ 0xDE is the NULL terminator lol */
         0xCE, 0xEA, 0xFC, 0x01, 0x9C, 0x23, 0x4D, 0xEE
     };
 
-    struct sLaikaB_box box = {
-        .unlockedData = {0}, /* reserved */
-        .code = { /* stack layout:
-                [0] - unlockedData (ptr)
-                [1] - data (ptr)
-                [2] - key (uint8_t)
-                [3] - working data (uint8_t)
-            */
-            LAIKA_MAKE_VM_IAB(OP_LOADCONST, 0, 0),
-            LAIKA_MAKE_VM_IAB(OP_LOADCONST, 1, 1),
-            LAIKA_MAKE_VM_IAB(OP_PUSHLIT, 2, 0xDE),
-            /* LOOP_START */
-            LAIKA_MAKE_VM_IAB(OP_READ, 3, 1), /* load data into working data */
-            LAIKA_MAKE_VM_IABC(OP_XOR, 3, 3, 2), /* xor data with key */
-            LAIKA_MAKE_VM_IAB(OP_WRITE, 0, 3), /* write data to unlockedData */
-            LAIKA_MAKE_VM_IA(OP_INCPTR, 0),
-            LAIKA_MAKE_VM_IA(OP_INCPTR, 1),
-            LAIKA_MAKE_VM_IAB(OP_TESTJMP, 3, -17), /* exit loop on null terminator */
-            OP_EXIT
-        }
-    };
+    struct sLaikaB_box box = LAIKA_BOX_SKID(0xDE);
 
     laikaB_unlock(&box, data);
     printf("%s\n", box.unlockedData);