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1] % 2) {\n      key[0] = 7\n    } else {\n      key[0] = 6\n    }\n  }\n  return formatReturnValue(key, enc)\n}\n\nECDH.prototype.getPrivateKey = function (enc) {\n  return formatReturnValue(this.keys.getPrivate(), enc)\n}\n\nECDH.prototype.setPublicKey = function (pub, enc) {\n  enc = enc || 'utf8'\n  if (!Buffer.isBuffer(pub)) {\n    pub = new Buffer(pub, enc)\n  }\n  this.keys._importPublic(pub)\n  return this\n}\n\nECDH.prototype.setPrivateKey = function (priv, enc) {\n  enc = enc || 'utf8'\n  if (!Buffer.isBuffer(priv)) {\n    priv = new Buffer(priv, enc)\n  }\n\n  var _priv = new BN(priv)\n  _priv = _priv.toString(16)\n  this.keys = this.curve.genKeyPair()\n  this.keys._importPrivate(_priv)\n  return this\n}\n\nfunction formatReturnValue (bn, enc, len) {\n  if (!Array.isArray(bn)) {\n    bn = bn.toArray()\n  }\n  var buf = new Buffer(bn)\n  if (len && buf.length < len) {\n    var zeros = new Buffer(len - buf.length)\n    zeros.fill(0)\n    buf = Buffer.concat([zeros, buf])\n  }\n  if (!enc) {\n    return buf\n  } else {\n    return buf.toString(enc)\n  }\n}\n"],"sourceRoot":""}