#51 crypto system

lockbox/padding/ansix923.lua

@@ -0,0 +1,22 @@
+local ANSIX923Padding = function(blockSize, byteCount)
+
+    local paddingCount = blockSize - (byteCount % blockSize);
+    local bytesLeft = paddingCount;
+
+    local stream = function()
+        if bytesLeft > 1 then
+            bytesLeft = bytesLeft - 1;
+            return 0x00;
+        elseif bytesLeft > 0 then
+            bytesLeft = bytesLeft - 1;
+            return paddingCount;
+        else
+            return nil;
+        end
+    end
+
+    return stream;
+
+end
+
+return ANSIX923Padding;