YLShipBuildLandMap/YLShipBuildLandMap.Web/wwwroot/scripts/crypto-js/mode-cfb.js

;(function (root, factory, undef) {
    if (typeof exports === "object") {
        // CommonJS
        module.exports = exports = factory(require("./core"), require("./cipher-core"));
    } else if (typeof define === "function" && define.amd) {
        // AMD
        define(["./core", "./cipher-core"], factory);
    } else {
        // Global (browser)
        factory(root.CryptoJS);
    }
}(this, function (CryptoJS) {

    /**
     * Cipher Feedback block mode.
     */
    CryptoJS.mode.CFB = (function () {
        var CFB = CryptoJS.lib.BlockCipherMode.extend();

        CFB.Encryptor = CFB.extend({
            processBlock: function (words, offset) {
                // Shortcuts
                var cipher = this._cipher;
                var blockSize = cipher.blockSize;

                generateKeystreamAndEncrypt.call(this, words, offset, blockSize, cipher);

                // Remember this block to use with next block
                this._prevBlock = words.slice(offset, offset + blockSize);
            }
        });

        CFB.Decryptor = CFB.extend({
            processBlock: function (words, offset) {
                // Shortcuts
                var cipher = this._cipher;
                var blockSize = cipher.blockSize;

                // Remember this block to use with next block
                var thisBlock = words.slice(offset, offset + blockSize);

                generateKeystreamAndEncrypt.call(this, words, offset, blockSize, cipher);

                // This block becomes the previous block
                this._prevBlock = thisBlock;
            }
        });

        function generateKeystreamAndEncrypt(words, offset, blockSize, cipher) {
            // Shortcut
            var iv = this._iv;

            // Generate keystream
            if (iv) {
                var keystream = iv.slice(0);

                // Remove IV for subsequent blocks
                this._iv = undefined;
            } else {
                var keystream = this._prevBlock;
            }
            cipher.encryptBlock(keystream, 0);

            // Encrypt
            for (var i = 0; i < blockSize; i++) {
                words[offset + i] ^= keystream[i];
            }
        }

        return CFB;
    }());


    return CryptoJS.mode.CFB;

}));