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diff --git a/node_modules/node-forge/lib/ed25519.js b/node_modules/node-forge/lib/ed25519.js
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+++ b/node_modules/node-forge/lib/ed25519.js
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+/**
+ * JavaScript implementation of Ed25519.
+ *
+ * Copyright (c) 2017-2019 Digital Bazaar, Inc.
+ *
+ * This implementation is based on the most excellent TweetNaCl which is
+ * in the public domain. Many thanks to its contributors:
+ *
+ * https://github.com/dchest/tweetnacl-js
+ */
+var forge = require('./forge');
+require('./jsbn');
+require('./random');
+require('./sha512');
+require('./util');
+var asn1Validator = require('./asn1-validator');
+var publicKeyValidator = asn1Validator.publicKeyValidator;
+var privateKeyValidator = asn1Validator.privateKeyValidator;
+
+if(typeof BigInteger === 'undefined') {
+  var BigInteger = forge.jsbn.BigInteger;
+}
+
+var ByteBuffer = forge.util.ByteBuffer;
+var NativeBuffer = typeof Buffer === 'undefined' ? Uint8Array : Buffer;
+
+/*
+ * Ed25519 algorithms, see RFC 8032:
+ * https://tools.ietf.org/html/rfc8032
+ */
+forge.pki = forge.pki || {};
+module.exports = forge.pki.ed25519 = forge.ed25519 = forge.ed25519 || {};
+var ed25519 = forge.ed25519;
+
+ed25519.constants = {};
+ed25519.constants.PUBLIC_KEY_BYTE_LENGTH = 32;
+ed25519.constants.PRIVATE_KEY_BYTE_LENGTH = 64;
+ed25519.constants.SEED_BYTE_LENGTH = 32;
+ed25519.constants.SIGN_BYTE_LENGTH = 64;
+ed25519.constants.HASH_BYTE_LENGTH = 64;
+
+ed25519.generateKeyPair = function(options) {
+  options = options || {};
+  var seed = options.seed;
+  if(seed === undefined) {
+    // generate seed
+    seed = forge.random.getBytesSync(ed25519.constants.SEED_BYTE_LENGTH);
+  } else if(typeof seed === 'string') {
+    if(seed.length !== ed25519.constants.SEED_BYTE_LENGTH) {
+      throw new TypeError(
+        '"seed" must be ' + ed25519.constants.SEED_BYTE_LENGTH +
+        ' bytes in length.');
+    }
+  } else if(!(seed instanceof Uint8Array)) {
+    throw new TypeError(
+      '"seed" must be a node.js Buffer, Uint8Array, or a binary string.');
+  }
+
+  seed = messageToNativeBuffer({message: seed, encoding: 'binary'});
+
+  var pk = new NativeBuffer(ed25519.constants.PUBLIC_KEY_BYTE_LENGTH);
+  var sk = new NativeBuffer(ed25519.constants.PRIVATE_KEY_BYTE_LENGTH);
+  for(var i = 0; i < 32; ++i) {
+    sk[i] = seed[i];
+  }
+  crypto_sign_keypair(pk, sk);
+  return {publicKey: pk, privateKey: sk};
+};
+
+/**
+ * Converts a private key from a RFC8410 ASN.1 encoding.
+ *
+ * @param obj - The asn1 representation of a private key.
+ *
+ * @returns {Object} keyInfo - The key information.
+ * @returns {Buffer|Uint8Array} keyInfo.privateKeyBytes - 32 private key bytes.
+ */
+ed25519.privateKeyFromAsn1 = function(obj) {
+  var capture = {};
+  var errors = [];
+  var valid = forge.asn1.validate(obj, privateKeyValidator, capture, errors);
+  if(!valid) {
+    var error = new Error('Invalid Key.');
+    error.errors = errors;
+    throw error;
+  }
+  var oid = forge.asn1.derToOid(capture.privateKeyOid);
+  var ed25519Oid = forge.oids.EdDSA25519;
+  if(oid !== ed25519Oid) {
+    throw new Error('Invalid OID "' + oid + '"; OID must be "' +
+      ed25519Oid + '".');
+  }
+  var privateKey = capture.privateKey;
+  // manually extract the private key bytes from nested octet string, see FIXME:
+  // https://github.com/digitalbazaar/forge/blob/master/lib/asn1.js#L542
+  var privateKeyBytes = messageToNativeBuffer({
+    message: forge.asn1.fromDer(privateKey).value,
+    encoding: 'binary'
+  });
+  // TODO: RFC8410 specifies a format for encoding the public key bytes along
+  // with the private key bytes. `publicKeyBytes` can be returned in the
+  // future. https://tools.ietf.org/html/rfc8410#section-10.3
+  return {privateKeyBytes: privateKeyBytes};
+};
+
+/**
+ * Converts a public key from a RFC8410 ASN.1 encoding.
+ *
+ * @param obj - The asn1 representation of a public key.
+ *
+ * @return {Buffer|Uint8Array} - 32 public key bytes.
+ */
+ed25519.publicKeyFromAsn1 = function(obj) {
+  // get SubjectPublicKeyInfo
+  var capture = {};
+  var errors = [];
+  var valid = forge.asn1.validate(obj, publicKeyValidator, capture, errors);
+  if(!valid) {
+    var error = new Error('Invalid Key.');
+    error.errors = errors;
+    throw error;
+  }
+  var oid = forge.asn1.derToOid(capture.publicKeyOid);
+  var ed25519Oid = forge.oids.EdDSA25519;
+  if(oid !== ed25519Oid) {
+    throw new Error('Invalid OID "' + oid + '"; OID must be "' +
+      ed25519Oid + '".');
+  }
+  var publicKeyBytes = capture.ed25519PublicKey;
+  if(publicKeyBytes.length !== ed25519.constants.PUBLIC_KEY_BYTE_LENGTH) {
+    throw new Error('Key length is invalid.');
+  }
+  return messageToNativeBuffer({
+    message: publicKeyBytes,
+    encoding: 'binary'
+  });
+};
+
+ed25519.publicKeyFromPrivateKey = function(options) {
+  options = options || {};
+  var privateKey = messageToNativeBuffer({
+    message: options.privateKey, encoding: 'binary'
+  });
+  if(privateKey.length !== ed25519.constants.PRIVATE_KEY_BYTE_LENGTH) {
+    throw new TypeError(
+      '"options.privateKey" must have a byte length of ' +
+      ed25519.constants.PRIVATE_KEY_BYTE_LENGTH);
+  }
+
+  var pk = new NativeBuffer(ed25519.constants.PUBLIC_KEY_BYTE_LENGTH);
+  for(var i = 0; i < pk.length; ++i) {
+    pk[i] = privateKey[32 + i];
+  }
+  return pk;
+};
+
+ed25519.sign = function(options) {
+  options = options || {};
+  var msg = messageToNativeBuffer(options);
+  var privateKey = messageToNativeBuffer({
+    message: options.privateKey,
+    encoding: 'binary'
+  });
+  if(privateKey.length === ed25519.constants.SEED_BYTE_LENGTH) {
+    var keyPair = ed25519.generateKeyPair({seed: privateKey});
+    privateKey = keyPair.privateKey;
+  } else if(privateKey.length !== ed25519.constants.PRIVATE_KEY_BYTE_LENGTH) {
+    throw new TypeError(
+      '"options.privateKey" must have a byte length of ' +
+      ed25519.constants.SEED_BYTE_LENGTH + ' or ' +
+      ed25519.constants.PRIVATE_KEY_BYTE_LENGTH);
+  }
+
+  var signedMsg = new NativeBuffer(
+    ed25519.constants.SIGN_BYTE_LENGTH + msg.length);
+  crypto_sign(signedMsg, msg, msg.length, privateKey);
+
+  var sig = new NativeBuffer(ed25519.constants.SIGN_BYTE_LENGTH);
+  for(var i = 0; i < sig.length; ++i) {
+    sig[i] = signedMsg[i];
+  }
+  return sig;
+};
+
+ed25519.verify = function(options) {
+  options = options || {};
+  var msg = messageToNativeBuffer(options);
+  if(options.signature === undefined) {
+    throw new TypeError(
+      '"options.signature" must be a node.js Buffer, a Uint8Array, a forge ' +
+      'ByteBuffer, or a binary string.');
+  }
+  var sig = messageToNativeBuffer({
+    message: options.signature,
+    encoding: 'binary'
+  });
+  if(sig.length !== ed25519.constants.SIGN_BYTE_LENGTH) {
+    throw new TypeError(
+      '"options.signature" must have a byte length of ' +
+      ed25519.constants.SIGN_BYTE_LENGTH);
+  }
+  var publicKey = messageToNativeBuffer({
+    message: options.publicKey,
+    encoding: 'binary'
+  });
+  if(publicKey.length !== ed25519.constants.PUBLIC_KEY_BYTE_LENGTH) {
+    throw new TypeError(
+      '"options.publicKey" must have a byte length of ' +
+      ed25519.constants.PUBLIC_KEY_BYTE_LENGTH);
+  }
+
+  var sm = new NativeBuffer(ed25519.constants.SIGN_BYTE_LENGTH + msg.length);
+  var m = new NativeBuffer(ed25519.constants.SIGN_BYTE_LENGTH + msg.length);
+  var i;
+  for(i = 0; i < ed25519.constants.SIGN_BYTE_LENGTH; ++i) {
+    sm[i] = sig[i];
+  }
+  for(i = 0; i < msg.length; ++i) {
+    sm[i + ed25519.constants.SIGN_BYTE_LENGTH] = msg[i];
+  }
+  return (crypto_sign_open(m, sm, sm.length, publicKey) >= 0);
+};
+
+function messageToNativeBuffer(options) {
+  var message = options.message;
+  if(message instanceof Uint8Array || message instanceof NativeBuffer) {
+    return message;
+  }
+
+  var encoding = options.encoding;
+  if(message === undefined) {
+    if(options.md) {
+      // TODO: more rigorous validation that `md` is a MessageDigest
+      message = options.md.digest().getBytes();
+      encoding = 'binary';
+    } else {
+      throw new TypeError('"options.message" or "options.md" not specified.');
+    }
+  }
+
+  if(typeof message === 'string' && !encoding) {
+    throw new TypeError('"options.encoding" must be "binary" or "utf8".');
+  }
+
+  if(typeof message === 'string') {
+    if(typeof Buffer !== 'undefined') {
+      return Buffer.from(message, encoding);
+    }
+    message = new ByteBuffer(message, encoding);
+  } else if(!(message instanceof ByteBuffer)) {
+    throw new TypeError(
+      '"options.message" must be a node.js Buffer, a Uint8Array, a forge ' +
+      'ByteBuffer, or a string with "options.encoding" specifying its ' +
+      'encoding.');
+  }
+
+  // convert to native buffer
+  var buffer = new NativeBuffer(message.length());
+  for(var i = 0; i < buffer.length; ++i) {
+    buffer[i] = message.at(i);
+  }
+  return buffer;
+}
+
+var gf0 = gf();
+var gf1 = gf([1]);
+var D = gf([
+  0x78a3, 0x1359, 0x4dca, 0x75eb, 0xd8ab, 0x4141, 0x0a4d, 0x0070,
+  0xe898, 0x7779, 0x4079, 0x8cc7, 0xfe73, 0x2b6f, 0x6cee, 0x5203]);
+var D2 = gf([
+  0xf159, 0x26b2, 0x9b94, 0xebd6, 0xb156, 0x8283, 0x149a, 0x00e0,
+  0xd130, 0xeef3, 0x80f2, 0x198e, 0xfce7, 0x56df, 0xd9dc, 0x2406]);
+var X = gf([
+  0xd51a, 0x8f25, 0x2d60, 0xc956, 0xa7b2, 0x9525, 0xc760, 0x692c,
+  0xdc5c, 0xfdd6, 0xe231, 0xc0a4, 0x53fe, 0xcd6e, 0x36d3, 0x2169]);
+var Y = gf([
+  0x6658, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666,
+  0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666]);
+var L = new Float64Array([
+  0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
+  0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10]);
+var I = gf([
+  0xa0b0, 0x4a0e, 0x1b27, 0xc4ee, 0xe478, 0xad2f, 0x1806, 0x2f43,
+  0xd7a7, 0x3dfb, 0x0099, 0x2b4d, 0xdf0b, 0x4fc1, 0x2480, 0x2b83]);
+
+// TODO: update forge buffer implementation to use `Buffer` or `Uint8Array`,
+// whichever is available, to improve performance
+function sha512(msg, msgLen) {
+  // Note: `out` and `msg` are NativeBuffer
+  var md = forge.md.sha512.create();
+  var buffer = new ByteBuffer(msg);
+  md.update(buffer.getBytes(msgLen), 'binary');
+  var hash = md.digest().getBytes();
+  if(typeof Buffer !== 'undefined') {
+    return Buffer.from(hash, 'binary');
+  }
+  var out = new NativeBuffer(ed25519.constants.HASH_BYTE_LENGTH);
+  for(var i = 0; i < 64; ++i) {
+    out[i] = hash.charCodeAt(i);
+  }
+  return out;
+}
+
+function crypto_sign_keypair(pk, sk) {
+  var p = [gf(), gf(), gf(), gf()];
+  var i;
+
+  var d = sha512(sk, 32);
+  d[0] &= 248;
+  d[31] &= 127;
+  d[31] |= 64;
+
+  scalarbase(p, d);
+  pack(pk, p);
+
+  for(i = 0; i < 32; ++i) {
+    sk[i + 32] = pk[i];
+  }
+  return 0;
+}
+
+// Note: difference from C - smlen returned, not passed as argument.
+function crypto_sign(sm, m, n, sk) {
+  var i, j, x = new Float64Array(64);
+  var p = [gf(), gf(), gf(), gf()];
+
+  var d = sha512(sk, 32);
+  d[0] &= 248;
+  d[31] &= 127;
+  d[31] |= 64;
+
+  var smlen = n + 64;
+  for(i = 0; i < n; ++i) {
+    sm[64 + i] = m[i];
+  }
+  for(i = 0; i < 32; ++i) {
+    sm[32 + i] = d[32 + i];
+  }
+
+  var r = sha512(sm.subarray(32), n + 32);
+  reduce(r);
+  scalarbase(p, r);
+  pack(sm, p);
+
+  for(i = 32; i < 64; ++i) {
+    sm[i] = sk[i];
+  }
+  var h = sha512(sm, n + 64);
+  reduce(h);
+
+  for(i = 32; i < 64; ++i) {
+    x[i] = 0;
+  }
+  for(i = 0; i < 32; ++i) {
+    x[i] = r[i];
+  }
+  for(i = 0; i < 32; ++i) {
+    for(j = 0; j < 32; j++) {
+      x[i + j] += h[i] * d[j];
+    }
+  }
+
+  modL(sm.subarray(32), x);
+  return smlen;
+}
+
+function crypto_sign_open(m, sm, n, pk) {
+  var i, mlen;
+  var t = new NativeBuffer(32);
+  var p = [gf(), gf(), gf(), gf()],
+      q = [gf(), gf(), gf(), gf()];
+
+  mlen = -1;
+  if(n < 64) {
+    return -1;
+  }
+
+  if(unpackneg(q, pk)) {
+    return -1;
+  }
+
+  for(i = 0; i < n; ++i) {
+    m[i] = sm[i];
+  }
+  for(i = 0; i < 32; ++i) {
+    m[i + 32] = pk[i];
+  }
+  var h = sha512(m, n);
+  reduce(h);
+  scalarmult(p, q, h);
+
+  scalarbase(q, sm.subarray(32));
+  add(p, q);
+  pack(t, p);
+
+  n -= 64;
+  if(crypto_verify_32(sm, 0, t, 0)) {
+    for(i = 0; i < n; ++i) {
+      m[i] = 0;
+    }
+    return -1;
+  }
+
+  for(i = 0; i < n; ++i) {
+    m[i] = sm[i + 64];
+  }
+  mlen = n;
+  return mlen;
+}
+
+function modL(r, x) {
+  var carry, i, j, k;
+  for(i = 63; i >= 32; --i) {
+    carry = 0;
+    for(j = i - 32, k = i - 12; j < k; ++j) {
+      x[j] += carry - 16 * x[i] * L[j - (i - 32)];
+      carry = (x[j] + 128) >> 8;
+      x[j] -= carry * 256;
+    }
+    x[j] += carry;
+    x[i] = 0;
+  }
+  carry = 0;
+  for(j = 0; j < 32; ++j) {
+    x[j] += carry - (x[31] >> 4) * L[j];
+    carry = x[j] >> 8;
+    x[j] &= 255;
+  }
+  for(j = 0; j < 32; ++j) {
+    x[j] -= carry * L[j];
+  }
+  for(i = 0; i < 32; ++i) {
+    x[i + 1] += x[i] >> 8;
+    r[i] = x[i] & 255;
+  }
+}
+
+function reduce(r) {
+  var x = new Float64Array(64);
+  for(var i = 0; i < 64; ++i) {
+    x[i] = r[i];
+    r[i] = 0;
+  }
+  modL(r, x);
+}
+
+function add(p, q) {
+  var a = gf(), b = gf(), c = gf(),
+      d = gf(), e = gf(), f = gf(),
+      g = gf(), h = gf(), t = gf();
+
+  Z(a, p[1], p[0]);
+  Z(t, q[1], q[0]);
+  M(a, a, t);
+  A(b, p[0], p[1]);
+  A(t, q[0], q[1]);
+  M(b, b, t);
+  M(c, p[3], q[3]);
+  M(c, c, D2);
+  M(d, p[2], q[2]);
+  A(d, d, d);
+  Z(e, b, a);
+  Z(f, d, c);
+  A(g, d, c);
+  A(h, b, a);
+
+  M(p[0], e, f);
+  M(p[1], h, g);
+  M(p[2], g, f);
+  M(p[3], e, h);
+}
+
+function cswap(p, q, b) {
+  for(var i = 0; i < 4; ++i) {
+    sel25519(p[i], q[i], b);
+  }
+}
+
+function pack(r, p) {
+  var tx = gf(), ty = gf(), zi = gf();
+  inv25519(zi, p[2]);
+  M(tx, p[0], zi);
+  M(ty, p[1], zi);
+  pack25519(r, ty);
+  r[31] ^= par25519(tx) << 7;
+}
+
+function pack25519(o, n) {
+  var i, j, b;
+  var m = gf(), t = gf();
+  for(i = 0; i < 16; ++i) {
+    t[i] = n[i];
+  }
+  car25519(t);
+  car25519(t);
+  car25519(t);
+  for(j = 0; j < 2; ++j) {
+    m[0] = t[0] - 0xffed;
+    for(i = 1; i < 15; ++i) {
+      m[i] = t[i] - 0xffff - ((m[i - 1] >> 16) & 1);
+      m[i-1] &= 0xffff;
+    }
+    m[15] = t[15] - 0x7fff - ((m[14] >> 16) & 1);
+    b = (m[15] >> 16) & 1;
+    m[14] &= 0xffff;
+    sel25519(t, m, 1 - b);
+  }
+  for (i = 0; i < 16; i++) {
+    o[2 * i] = t[i] & 0xff;
+    o[2 * i + 1] = t[i] >> 8;
+  }
+}
+
+function unpackneg(r, p) {
+  var t = gf(), chk = gf(), num = gf(),
+      den = gf(), den2 = gf(), den4 = gf(),
+      den6 = gf();
+
+  set25519(r[2], gf1);
+  unpack25519(r[1], p);
+  S(num, r[1]);
+  M(den, num, D);
+  Z(num, num, r[2]);
+  A(den, r[2], den);
+
+  S(den2, den);
+  S(den4, den2);
+  M(den6, den4, den2);
+  M(t, den6, num);
+  M(t, t, den);
+
+  pow2523(t, t);
+  M(t, t, num);
+  M(t, t, den);
+  M(t, t, den);
+  M(r[0], t, den);
+
+  S(chk, r[0]);
+  M(chk, chk, den);
+  if(neq25519(chk, num)) {
+    M(r[0], r[0], I);
+  }
+
+  S(chk, r[0]);
+  M(chk, chk, den);
+  if(neq25519(chk, num)) {
+    return -1;
+  }
+
+  if(par25519(r[0]) === (p[31] >> 7)) {
+    Z(r[0], gf0, r[0]);
+  }
+
+  M(r[3], r[0], r[1]);
+  return 0;
+}
+
+function unpack25519(o, n) {
+  var i;
+  for(i = 0; i < 16; ++i) {
+    o[i] = n[2 * i] + (n[2 * i + 1] << 8);
+  }
+  o[15] &= 0x7fff;
+}
+
+function pow2523(o, i) {
+  var c = gf();
+  var a;
+  for(a = 0; a < 16; ++a) {
+    c[a] = i[a];
+  }
+  for(a = 250; a >= 0; --a) {
+    S(c, c);
+    if(a !== 1) {
+      M(c, c, i);
+    }
+  }
+  for(a = 0; a < 16; ++a) {
+    o[a] = c[a];
+  }
+}
+
+function neq25519(a, b) {
+  var c = new NativeBuffer(32);
+  var d = new NativeBuffer(32);
+  pack25519(c, a);
+  pack25519(d, b);
+  return crypto_verify_32(c, 0, d, 0);
+}
+
+function crypto_verify_32(x, xi, y, yi) {
+  return vn(x, xi, y, yi, 32);
+}
+
+function vn(x, xi, y, yi, n) {
+  var i, d = 0;
+  for(i = 0; i < n; ++i) {
+    d |= x[xi + i] ^ y[yi + i];
+  }
+  return (1 & ((d - 1) >>> 8)) - 1;
+}
+
+function par25519(a) {
+  var d = new NativeBuffer(32);
+  pack25519(d, a);
+  return d[0] & 1;
+}
+
+function scalarmult(p, q, s) {
+  var b, i;
+  set25519(p[0], gf0);
+  set25519(p[1], gf1);
+  set25519(p[2], gf1);
+  set25519(p[3], gf0);
+  for(i = 255; i >= 0; --i) {
+    b = (s[(i / 8)|0] >> (i & 7)) & 1;
+    cswap(p, q, b);
+    add(q, p);
+    add(p, p);
+    cswap(p, q, b);
+  }
+}
+
+function scalarbase(p, s) {
+  var q = [gf(), gf(), gf(), gf()];
+  set25519(q[0], X);
+  set25519(q[1], Y);
+  set25519(q[2], gf1);
+  M(q[3], X, Y);
+  scalarmult(p, q, s);
+}
+
+function set25519(r, a) {
+  var i;
+  for(i = 0; i < 16; i++) {
+    r[i] = a[i] | 0;
+  }
+}
+
+function inv25519(o, i) {
+  var c = gf();
+  var a;
+  for(a = 0; a < 16; ++a) {
+    c[a] = i[a];
+  }
+  for(a = 253; a >= 0; --a) {
+    S(c, c);
+    if(a !== 2 && a !== 4) {
+      M(c, c, i);
+    }
+  }
+  for(a = 0; a < 16; ++a) {
+    o[a] = c[a];
+  }
+}
+
+function car25519(o) {
+  var i, v, c = 1;
+  for(i = 0; i < 16; ++i) {
+    v = o[i] + c + 65535;
+    c = Math.floor(v / 65536);
+    o[i] = v - c * 65536;
+  }
+  o[0] += c - 1 + 37 * (c - 1);
+}
+
+function sel25519(p, q, b) {
+  var t, c = ~(b - 1);
+  for(var i = 0; i < 16; ++i) {
+    t = c & (p[i] ^ q[i]);
+    p[i] ^= t;
+    q[i] ^= t;
+  }
+}
+
+function gf(init) {
+  var i, r = new Float64Array(16);
+  if(init) {
+    for(i = 0; i < init.length; ++i) {
+      r[i] = init[i];
+    }
+  }
+  return r;
+}
+
+function A(o, a, b) {
+  for(var i = 0; i < 16; ++i) {
+    o[i] = a[i] + b[i];
+  }
+}
+
+function Z(o, a, b) {
+  for(var i = 0; i < 16; ++i) {
+    o[i] = a[i] - b[i];
+  }
+}
+
+function S(o, a) {
+  M(o, a, a);
+}
+
+function M(o, a, b) {
+  var v, c,
+     t0 = 0,  t1 = 0,  t2 = 0,  t3 = 0,  t4 = 0,  t5 = 0,  t6 = 0,  t7 = 0,
+     t8 = 0,  t9 = 0, t10 = 0, t11 = 0, t12 = 0, t13 = 0, t14 = 0, t15 = 0,
+    t16 = 0, t17 = 0, t18 = 0, t19 = 0, t20 = 0, t21 = 0, t22 = 0, t23 = 0,
+    t24 = 0, t25 = 0, t26 = 0, t27 = 0, t28 = 0, t29 = 0, t30 = 0,
+    b0 = b[0],
+    b1 = b[1],
+    b2 = b[2],
+    b3 = b[3],
+    b4 = b[4],
+    b5 = b[5],
+    b6 = b[6],
+    b7 = b[7],
+    b8 = b[8],
+    b9 = b[9],
+    b10 = b[10],
+    b11 = b[11],
+    b12 = b[12],
+    b13 = b[13],
+    b14 = b[14],
+    b15 = b[15];
+
+  v = a[0];
+  t0 += v * b0;
+  t1 += v * b1;
+  t2 += v * b2;
+  t3 += v * b3;
+  t4 += v * b4;
+  t5 += v * b5;
+  t6 += v * b6;
+  t7 += v * b7;
+  t8 += v * b8;
+  t9 += v * b9;
+  t10 += v * b10;
+  t11 += v * b11;
+  t12 += v * b12;
+  t13 += v * b13;
+  t14 += v * b14;
+  t15 += v * b15;
+  v = a[1];
+  t1 += v * b0;
+  t2 += v * b1;
+  t3 += v * b2;
+  t4 += v * b3;
+  t5 += v * b4;
+  t6 += v * b5;
+  t7 += v * b6;
+  t8 += v * b7;
+  t9 += v * b8;
+  t10 += v * b9;
+  t11 += v * b10;
+  t12 += v * b11;
+  t13 += v * b12;
+  t14 += v * b13;
+  t15 += v * b14;
+  t16 += v * b15;
+  v = a[2];
+  t2 += v * b0;
+  t3 += v * b1;
+  t4 += v * b2;
+  t5 += v * b3;
+  t6 += v * b4;
+  t7 += v * b5;
+  t8 += v * b6;
+  t9 += v * b7;
+  t10 += v * b8;
+  t11 += v * b9;
+  t12 += v * b10;
+  t13 += v * b11;
+  t14 += v * b12;
+  t15 += v * b13;
+  t16 += v * b14;
+  t17 += v * b15;
+  v = a[3];
+  t3 += v * b0;
+  t4 += v * b1;
+  t5 += v * b2;
+  t6 += v * b3;
+  t7 += v * b4;
+  t8 += v * b5;
+  t9 += v * b6;
+  t10 += v * b7;
+  t11 += v * b8;
+  t12 += v * b9;
+  t13 += v * b10;
+  t14 += v * b11;
+  t15 += v * b12;
+  t16 += v * b13;
+  t17 += v * b14;
+  t18 += v * b15;
+  v = a[4];
+  t4 += v * b0;
+  t5 += v * b1;
+  t6 += v * b2;
+  t7 += v * b3;
+  t8 += v * b4;
+  t9 += v * b5;
+  t10 += v * b6;
+  t11 += v * b7;
+  t12 += v * b8;
+  t13 += v * b9;
+  t14 += v * b10;
+  t15 += v * b11;
+  t16 += v * b12;
+  t17 += v * b13;
+  t18 += v * b14;
+  t19 += v * b15;
+  v = a[5];
+  t5 += v * b0;
+  t6 += v * b1;
+  t7 += v * b2;
+  t8 += v * b3;
+  t9 += v * b4;
+  t10 += v * b5;
+  t11 += v * b6;
+  t12 += v * b7;
+  t13 += v * b8;
+  t14 += v * b9;
+  t15 += v * b10;
+  t16 += v * b11;
+  t17 += v * b12;
+  t18 += v * b13;
+  t19 += v * b14;
+  t20 += v * b15;
+  v = a[6];
+  t6 += v * b0;
+  t7 += v * b1;
+  t8 += v * b2;
+  t9 += v * b3;
+  t10 += v * b4;
+  t11 += v * b5;
+  t12 += v * b6;
+  t13 += v * b7;
+  t14 += v * b8;
+  t15 += v * b9;
+  t16 += v * b10;
+  t17 += v * b11;
+  t18 += v * b12;
+  t19 += v * b13;
+  t20 += v * b14;
+  t21 += v * b15;
+  v = a[7];
+  t7 += v * b0;
+  t8 += v * b1;
+  t9 += v * b2;
+  t10 += v * b3;
+  t11 += v * b4;
+  t12 += v * b5;
+  t13 += v * b6;
+  t14 += v * b7;
+  t15 += v * b8;
+  t16 += v * b9;
+  t17 += v * b10;
+  t18 += v * b11;
+  t19 += v * b12;
+  t20 += v * b13;
+  t21 += v * b14;
+  t22 += v * b15;
+  v = a[8];
+  t8 += v * b0;
+  t9 += v * b1;
+  t10 += v * b2;
+  t11 += v * b3;
+  t12 += v * b4;
+  t13 += v * b5;
+  t14 += v * b6;
+  t15 += v * b7;
+  t16 += v * b8;
+  t17 += v * b9;
+  t18 += v * b10;
+  t19 += v * b11;
+  t20 += v * b12;
+  t21 += v * b13;
+  t22 += v * b14;
+  t23 += v * b15;
+  v = a[9];
+  t9 += v * b0;
+  t10 += v * b1;
+  t11 += v * b2;
+  t12 += v * b3;
+  t13 += v * b4;
+  t14 += v * b5;
+  t15 += v * b6;
+  t16 += v * b7;
+  t17 += v * b8;
+  t18 += v * b9;
+  t19 += v * b10;
+  t20 += v * b11;
+  t21 += v * b12;
+  t22 += v * b13;
+  t23 += v * b14;
+  t24 += v * b15;
+  v = a[10];
+  t10 += v * b0;
+  t11 += v * b1;
+  t12 += v * b2;
+  t13 += v * b3;
+  t14 += v * b4;
+  t15 += v * b5;
+  t16 += v * b6;
+  t17 += v * b7;
+  t18 += v * b8;
+  t19 += v * b9;
+  t20 += v * b10;
+  t21 += v * b11;
+  t22 += v * b12;
+  t23 += v * b13;
+  t24 += v * b14;
+  t25 += v * b15;
+  v = a[11];
+  t11 += v * b0;
+  t12 += v * b1;
+  t13 += v * b2;
+  t14 += v * b3;
+  t15 += v * b4;
+  t16 += v * b5;
+  t17 += v * b6;
+  t18 += v * b7;
+  t19 += v * b8;
+  t20 += v * b9;
+  t21 += v * b10;
+  t22 += v * b11;
+  t23 += v * b12;
+  t24 += v * b13;
+  t25 += v * b14;
+  t26 += v * b15;
+  v = a[12];
+  t12 += v * b0;
+  t13 += v * b1;
+  t14 += v * b2;
+  t15 += v * b3;
+  t16 += v * b4;
+  t17 += v * b5;
+  t18 += v * b6;
+  t19 += v * b7;
+  t20 += v * b8;
+  t21 += v * b9;
+  t22 += v * b10;
+  t23 += v * b11;
+  t24 += v * b12;
+  t25 += v * b13;
+  t26 += v * b14;
+  t27 += v * b15;
+  v = a[13];
+  t13 += v * b0;
+  t14 += v * b1;
+  t15 += v * b2;
+  t16 += v * b3;
+  t17 += v * b4;
+  t18 += v * b5;
+  t19 += v * b6;
+  t20 += v * b7;
+  t21 += v * b8;
+  t22 += v * b9;
+  t23 += v * b10;
+  t24 += v * b11;
+  t25 += v * b12;
+  t26 += v * b13;
+  t27 += v * b14;
+  t28 += v * b15;
+  v = a[14];
+  t14 += v * b0;
+  t15 += v * b1;
+  t16 += v * b2;
+  t17 += v * b3;
+  t18 += v * b4;
+  t19 += v * b5;
+  t20 += v * b6;
+  t21 += v * b7;
+  t22 += v * b8;
+  t23 += v * b9;
+  t24 += v * b10;
+  t25 += v * b11;
+  t26 += v * b12;
+  t27 += v * b13;
+  t28 += v * b14;
+  t29 += v * b15;
+  v = a[15];
+  t15 += v * b0;
+  t16 += v * b1;
+  t17 += v * b2;
+  t18 += v * b3;
+  t19 += v * b4;
+  t20 += v * b5;
+  t21 += v * b6;
+  t22 += v * b7;
+  t23 += v * b8;
+  t24 += v * b9;
+  t25 += v * b10;
+  t26 += v * b11;
+  t27 += v * b12;
+  t28 += v * b13;
+  t29 += v * b14;
+  t30 += v * b15;
+
+  t0  += 38 * t16;
+  t1  += 38 * t17;
+  t2  += 38 * t18;
+  t3  += 38 * t19;
+  t4  += 38 * t20;
+  t5  += 38 * t21;
+  t6  += 38 * t22;
+  t7  += 38 * t23;
+  t8  += 38 * t24;
+  t9  += 38 * t25;
+  t10 += 38 * t26;
+  t11 += 38 * t27;
+  t12 += 38 * t28;
+  t13 += 38 * t29;
+  t14 += 38 * t30;
+  // t15 left as is
+
+  // first car
+  c = 1;
+  v =  t0 + c + 65535; c = Math.floor(v / 65536);  t0 = v - c * 65536;
+  v =  t1 + c + 65535; c = Math.floor(v / 65536);  t1 = v - c * 65536;
+  v =  t2 + c + 65535; c = Math.floor(v / 65536);  t2 = v - c * 65536;
+  v =  t3 + c + 65535; c = Math.floor(v / 65536);  t3 = v - c * 65536;
+  v =  t4 + c + 65535; c = Math.floor(v / 65536);  t4 = v - c * 65536;
+  v =  t5 + c + 65535; c = Math.floor(v / 65536);  t5 = v - c * 65536;
+  v =  t6 + c + 65535; c = Math.floor(v / 65536);  t6 = v - c * 65536;
+  v =  t7 + c + 65535; c = Math.floor(v / 65536);  t7 = v - c * 65536;
+  v =  t8 + c + 65535; c = Math.floor(v / 65536);  t8 = v - c * 65536;
+  v =  t9 + c + 65535; c = Math.floor(v / 65536);  t9 = v - c * 65536;
+  v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536;
+  v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536;
+  v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536;
+  v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536;
+  v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536;
+  v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536;
+  t0 += c-1 + 37 * (c-1);
+
+  // second car
+  c = 1;
+  v =  t0 + c + 65535; c = Math.floor(v / 65536);  t0 = v - c * 65536;
+  v =  t1 + c + 65535; c = Math.floor(v / 65536);  t1 = v - c * 65536;
+  v =  t2 + c + 65535; c = Math.floor(v / 65536);  t2 = v - c * 65536;
+  v =  t3 + c + 65535; c = Math.floor(v / 65536);  t3 = v - c * 65536;
+  v =  t4 + c + 65535; c = Math.floor(v / 65536);  t4 = v - c * 65536;
+  v =  t5 + c + 65535; c = Math.floor(v / 65536);  t5 = v - c * 65536;
+  v =  t6 + c + 65535; c = Math.floor(v / 65536);  t6 = v - c * 65536;
+  v =  t7 + c + 65535; c = Math.floor(v / 65536);  t7 = v - c * 65536;
+  v =  t8 + c + 65535; c = Math.floor(v / 65536);  t8 = v - c * 65536;
+  v =  t9 + c + 65535; c = Math.floor(v / 65536);  t9 = v - c * 65536;
+  v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536;
+  v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536;
+  v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536;
+  v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536;
+  v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536;
+  v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536;
+  t0 += c-1 + 37 * (c-1);
+
+  o[ 0] = t0;
+  o[ 1] = t1;
+  o[ 2] = t2;
+  o[ 3] = t3;
+  o[ 4] = t4;
+  o[ 5] = t5;
+  o[ 6] = t6;
+  o[ 7] = t7;
+  o[ 8] = t8;
+  o[ 9] = t9;
+  o[10] = t10;
+  o[11] = t11;
+  o[12] = t12;
+  o[13] = t13;
+  o[14] = t14;
+  o[15] = t15;
+}