preliminary Clustered Virtual Disk; hardware dev kit wip

assets/disk0/home/hdk/enc.js

@@ -0,0 +1,46 @@
+function seq(s) {
+    let out = ""
+    let cnt = 0
+    let oldchar = s[0]
+    for (let char of s) {
+        if (char === oldchar) {
+            cnt += 1
+        }
+        else {
+            out += ('' + cnt) + oldchar
+            cnt = 1
+        }
+        oldchar = char
+    }
+    return out + cnt + oldchar
+}
+
+
+
+let infile = files.open(_G.shell.resolvePathInput(exec_args[1]).full)
+let outfile = files.open(_G.shell.resolvePathInput(exec_args[2]).full)
+let inBytes = infile.bread(); infile.close()
+let outBytes = new Int8Array(inBytes.length)
+
+let key = "00"
+let keyBytes = [0x00]
+let keyCursor = 0
+
+function getNewKeySeq() {
+    key = seq(key)
+    keyBytes = []
+    keyCursor = 0
+    for (let i = 0; i < key.length; i += 2) {
+        keyBytes.push(parseInt(key.substring(i, i+2), 16))
+    }
+}
+
+
+for (let outcnt = 0; outcnt < inBytes.length; outcnt++) {
+    outBytes[outcnt] = inBytes[outcnt] ^ keyBytes[keyCursor++]
+    if (keyCursor >= keyBytes.length) {
+        getNewKeySeq()
+    }
+}
+
+outfile.bwrite(outBytes)