�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` 'use strict'; var assert = require('minimalistic-assert'); var inherits = require('inherits'); var proto = {}; function CBCState(iv) { assert.equal(iv.length, 8, 'Invalid IV length'); this.iv = new Array(8); for (var i = 0; i < this.iv.length; i++) this.iv[i] = iv[i]; } function instantiate(Base) { function CBC(options) { Base.call(this, options); this._cbcInit(); } inherits(CBC, Base); var keys = Object.keys(proto); for (var i = 0; i < keys.length; i++) { var key = keys[i]; CBC.prototype[key] = proto[key]; } CBC.create = function create(options) { return new CBC(options); }; return CBC; } exports.instantiate = instantiate; proto._cbcInit = function _cbcInit() { var state = new CBCState(this.options.iv); this._cbcState = state; }; proto._update = function _update(inp, inOff, out, outOff) { var state = this._cbcState; var superProto = this.constructor.super_.prototype; var iv = state.iv; if (this.type === 'encrypt') { for (var i = 0; i < this.blockSize; i++) iv[i] ^= inp[inOff + i]; superProto._update.call(this, iv, 0, out, outOff); for (var i = 0; i < this.blockSize; i++) iv[i] = out[outOff + i]; } else { superProto._update.call(this, inp, inOff, out, outOff); for (var i = 0; i < this.blockSize; i++) out[outOff + i] ^= iv[i]; for (var i = 0; i < this.blockSize; i++) iv[i] = inp[inOff + i]; } };