first commit

.gitignore

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+node_modules/

bubble_babble.js

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+
+var map_index = function(memo, letter, index) {
+  memo[letter] = index;
+  return memo;
+};
+
+var vowels = 'aeiouy';
+var vowel_map = vowels.split('').reduce(map_index, {});
+
+var consonants = 'bcdfghklmnprstvzx';
+var consonant_map = consonants.split('').reduce(map_index, {});
+
+var tuple_re = new RegExp('([' + vowels + '][' + consonants + '][' + vowels + '][' + consonants + ']-[' + consonants + '])', 'g');
+
+var encrypt = function(input, encoding) {
+
+  if (typeof input === 'string') {
+
+    // encoding defaults to 'utf8' if left undefined
+    input = new Buffer(input, encoding);
+  }
+
+  var result = 'x',
+      seed = 1,
+      reached_end = false,
+      len = input.length,
+      i = 0,
+      byte1, byte2,
+      a, b, c, d, e;
+
+  while (!reached_end) {
+    if (i >= len) {
+      a = Math.floor(seed % 6);
+      b = 16 ;
+      c = Math.floor(seed / 6);
+      reached_end = true;
+    } else {
+      byte1 = input.readInt8(i);
+      a = (((byte1 >> 6) & 3) + seed) % 6;
+      b = (byte1 >> 2) & 15;
+      c = ((byte1 & 3) + Math.floor(seed / 6)) % 6;
+    }
+
+    if (i + 1 >= len) {
+      reached_end = true;
+    } else {
+      byte2 = input.readInt8(i + 1);
+      d = (byte2 >> 4) & 15;
+      e = byte2 & 15;
+    }
+    seed = ((seed * 5) + (byte1 * 7) + byte2) % 36;
+
+    result += vowels.charAt(a) + consonants.charAt(b) + vowels.charAt(c);
+
+    if (!reached_end) {
+      result += consonants.charAt(d) + '-' + consonants.charAt(e);
+    }
+
+    i += 2;
+  }
+
+  result += 'x';
+  return result;
+};
+
+var decrypt = function(input) {
+  var tuples = input.match(tuple_re),
+      len = tuples.length,
+      char_codes = new Buffer(len * 2),
+      seed = 1,
+      byte1, byte2,
+      a_bits, b_bits,
+      c_bits, d_bits,
+      e_bits, i,
+      tuple;
+
+  for (i = 0; i < len; ++i) {
+    tuple = tuples[i];
+
+    a_bits = (Math.max(vowel_map[tuple.charAt(0)] - seed, 0) & 3) << 6;
+    b_bits = ((consonant_map[tuple.charAt(1)] & 15)) << 2;
+    c_bits = Math.max(vowel_map[tuple.charAt(2)] - Math.floor(seed / 6), 0) & 3;
+
+    if ((a_bits - seed) % 6 >= 4 ||
+        (c_bits - seed) % 6 >= 4) {
+      return null;
+    }
+
+    d_bits = (consonant_map[tuple.charAt(3)] & 15) << 4;
+    e_bits = consonant_map[tuple.charAt(5)] & 15;
+
+    byte1 = a_bits | b_bits | c_bits;
+    byte2 = d_bits | e_bits;
+
+    seed = ((seed * 5) + (byte1 * 7) + byte2) % 36;
+    char_codes[i * 2] = byte1;
+    char_codes[(i * 2) + 1] = byte2;
+  }
+
+  return char_codes;
+};
+
+var input = 'xesef-disof-gytuf-katof-movif-baxux';
+
+console.log(decrypt(input).toString());
+
+console.log(encrypt(new Buffer('1234567890')));
+console.log(encrypt('1234567890', 'utf8'));