�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` var Buffer = require('safe-buffer').Buffer var Transform = require('stream').Transform var StringDecoder = require('string_decoder').StringDecoder var inherits = require('inherits') function CipherBase (hashMode) { Transform.call(this) this.hashMode = typeof hashMode === 'string' if (this.hashMode) { this[hashMode] = this._finalOrDigest } else { this.final = this._finalOrDigest } if (this._final) { this.__final = this._final this._final = null } this._decoder = null this._encoding = null } inherits(CipherBase, Transform) CipherBase.prototype.update = function (data, inputEnc, outputEnc) { if (typeof data === 'string') { data = Buffer.from(data, inputEnc) } var outData = this._update(data) if (this.hashMode) return this if (outputEnc) { outData = this._toString(outData, outputEnc) } return outData } CipherBase.prototype.setAutoPadding = function () {} CipherBase.prototype.getAuthTag = function () { throw new Error('trying to get auth tag in unsupported state') } CipherBase.prototype.setAuthTag = function () { throw new Error('trying to set auth tag in unsupported state') } CipherBase.prototype.setAAD = function () { throw new Error('trying to set aad in unsupported state') } CipherBase.prototype._transform = function (data, _, next) { var err try { if (this.hashMode) { this._update(data) } else { this.push(this._update(data)) } } catch (e) { err = e } finally { next(err) } } CipherBase.prototype._flush = function (done) { var err try { this.push(this.__final()) } catch (e) { err = e } done(err) } CipherBase.prototype._finalOrDigest = function (outputEnc) { var outData = this.__final() || Buffer.alloc(0) if (outputEnc) { outData = this._toString(outData, outputEnc, true) } return outData } CipherBase.prototype._toString = function (value, enc, fin) { if (!this._decoder) { this._decoder = new StringDecoder(enc) this._encoding = enc } if (this._encoding !== enc) throw new Error('can\'t switch encodings') var out = this._decoder.write(value) if (fin) { out += this._decoder.end() } return out } module.exports = CipherBase