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hash]);\n  var len = priv.modulus.byteLength();\n  var pad = [0, 1];\n\n  while (hash.length + pad.length + 1 < len) pad.push(0xff);\n\n  pad.push(0x00);\n  var i = -1;\n\n  while (++i < hash.length) pad.push(hash[i]);\n\n  var out = crt(pad, priv);\n  return out;\n}\n\nfunction ecSign(hash, priv) {\n  var curveId = curves[priv.curve.join('.')];\n  if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.'));\n  var curve = new EC(curveId);\n  var key = curve.keyFromPrivate(priv.privateKey);\n  var out = key.sign(hash);\n  return Buffer.from(out.toDER());\n}\n\nfunction dsaSign(hash, priv, algo) {\n  var x = priv.params.priv_key;\n  var p = priv.params.p;\n  var q = priv.params.q;\n  var g = priv.params.g;\n  var r = new BN(0);\n  var k;\n  var H = bits2int(hash, q).mod(q);\n  var s = false;\n  var kv = getKey(x, q, hash, algo);\n\n  while (s === false) {\n    k = makeKey(q, kv, algo);\n    r = makeR(g, k, p, q);\n    s = k.invm(q).imul(H.add(x.mul(r))).mod(q);\n\n    if 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[0, 1]\n  while (hash.length + pad.length + 1 < len) pad.push(0xff)\n  pad.push(0x00)\n  var i = -1\n  while (++i < hash.length) pad.push(hash[i])\n\n  var out = crt(pad, priv)\n  return out\n}\n\nfunction ecSign (hash, priv) {\n  var curveId = curves[priv.curve.join('.')]\n  if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.'))\n\n  var curve = new EC(curveId)\n  var key = curve.keyFromPrivate(priv.privateKey)\n  var out = key.sign(hash)\n\n  return Buffer.from(out.toDER())\n}\n\nfunction dsaSign (hash, priv, algo) {\n  var x = priv.params.priv_key\n  var p = priv.params.p\n  var q = priv.params.q\n  var g = priv.params.g\n  var r = new BN(0)\n  var k\n  var H = bits2int(hash, q).mod(q)\n  var s = false\n  var kv = getKey(x, q, hash, algo)\n  while (s === false) {\n    k = makeKey(q, kv, algo)\n    r = makeR(g, k, p, q)\n    s = k.invm(q).imul(H.add(x.mul(r))).mod(q)\n    if (s.cmpn(0) === 0) {\n      s = false\n      r = new BN(0)\n    }\n  }\n  return toDER(r, s)\n}\n\nfunction toDER (r, s) {\n  r = r.toArray()\n  s = s.toArray()\n\n  // Pad values\n  if (r[0] & 0x80) r = [0].concat(r)\n  if (s[0] & 0x80) s = [0].concat(s)\n\n  var total = r.length + s.length + 4\n  var res = [0x30, total, 0x02, r.length]\n  res = res.concat(r, [0x02, s.length], s)\n  return Buffer.from(res)\n}\n\nfunction getKey (x, q, hash, algo) {\n  x = Buffer.from(x.toArray())\n  if (x.length < q.byteLength()) {\n    var zeros = Buffer.alloc(q.byteLength() - x.length)\n    x = Buffer.concat([zeros, x])\n  }\n  var hlen = hash.length\n  var hbits = bits2octets(hash, q)\n  var v = Buffer.alloc(hlen)\n  v.fill(1)\n  var k = Buffer.alloc(hlen)\n  k = createHmac(algo, k).update(v).update(Buffer.from([0])).update(x).update(hbits).digest()\n  v = createHmac(algo, k).update(v).digest()\n  k = createHmac(algo, k).update(v).update(Buffer.from([1])).update(x).update(hbits).digest()\n  v = createHmac(algo, k).update(v).digest()\n  return { k: k, v: v }\n}\n\nfunction bits2int (obits, q) {\n  var bits = new BN(obits)\n  var shift = (obits.length << 3) - q.bitLength()\n  if (shift > 0) bits.ishrn(shift)\n  return bits\n}\n\nfunction bits2octets (bits, q) {\n  bits = bits2int(bits, q)\n  bits = bits.mod(q)\n  var out = Buffer.from(bits.toArray())\n  if (out.length < q.byteLength()) {\n    var zeros = Buffer.alloc(q.byteLength() - out.length)\n    out = Buffer.concat([zeros, out])\n  }\n  return out\n}\n\nfunction makeKey (q, kv, algo) {\n  var t\n  var k\n\n  do {\n    t = Buffer.alloc(0)\n\n    while (t.length * 8 < q.bitLength()) {\n      kv.v = createHmac(algo, kv.k).update(kv.v).digest()\n      t = Buffer.concat([t, kv.v])\n    }\n\n    k = bits2int(t, q)\n    kv.k = createHmac(algo, kv.k).update(kv.v).update(Buffer.from([0])).digest()\n    kv.v = createHmac(algo, kv.k).update(kv.v).digest()\n  } while (k.cmp(q) !== -1)\n\n  return k\n}\n\nfunction makeR (g, k, p, q) {\n  return g.toRed(BN.mont(p)).redPow(k).fromRed().mod(q)\n}\n\nmodule.exports = sign\nmodule.exports.getKey = getKey\nmodule.exports.makeKey = makeKey\n"]},"metadata":{},"sourceType":"script"}