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/var/runtime/node_modules/@aws-sdk/node_modules/crypto-js

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sha3.js10.4 KB · 326 lines
;(function (root, factory, undef) {	if (typeof exports === "object") {		// CommonJS		module.exports = exports = factory(require("./core"), require("./x64-core"));	}	else if (typeof define === "function" && define.amd) {		// AMD		define(["./core", "./x64-core"], factory);	}	else {		// Global (browser)		factory(root.CryptoJS);	}}(this, function (CryptoJS) { 	(function (Math) {	    // Shortcuts	    var C = CryptoJS;	    var C_lib = C.lib;	    var WordArray = C_lib.WordArray;	    var Hasher = C_lib.Hasher;	    var C_x64 = C.x64;	    var X64Word = C_x64.Word;	    var C_algo = C.algo; 	    // Constants tables	    var RHO_OFFSETS = [];	    var PI_INDEXES  = [];	    var ROUND_CONSTANTS = []; 	    // Compute Constants	    (function () {	        // Compute rho offset constants	        var x = 1, y = 0;	        for (var t = 0; t < 24; t++) {	            RHO_OFFSETS[x + 5 * y] = ((t + 1) * (t + 2) / 2) % 64; 	            var newX = y % 5;	            var newY = (2 * x + 3 * y) % 5;	            x = newX;	            y = newY;	        } 	        // Compute pi index constants	        for (var x = 0; x < 5; x++) {	            for (var y = 0; y < 5; y++) {	                PI_INDEXES[x + 5 * y] = y + ((2 * x + 3 * y) % 5) * 5;	            }	        } 	        // Compute round constants	        var LFSR = 0x01;	        for (var i = 0; i < 24; i++) {	            var roundConstantMsw = 0;	            var roundConstantLsw = 0; 	            for (var j = 0; j < 7; j++) {	                if (LFSR & 0x01) {	                    var bitPosition = (1 << j) - 1;	                    if (bitPosition < 32) {	                        roundConstantLsw ^= 1 << bitPosition;	                    } else /* if (bitPosition >= 32) */ {	                        roundConstantMsw ^= 1 << (bitPosition - 32);	                    }	                } 	                // Compute next LFSR	                if (LFSR & 0x80) {	                    // Primitive polynomial over GF(2): x^8 + x^6 + x^5 + x^4 + 1	                    LFSR = (LFSR << 1) ^ 0x71;	                } else {	                    LFSR <<= 1;	                }	            } 	            ROUND_CONSTANTS[i] = X64Word.create(roundConstantMsw, roundConstantLsw);	        }	    }()); 	    // Reusable objects for temporary values	    var T = [];	    (function () {	        for (var i = 0; i < 25; i++) {	            T[i] = X64Word.create();	        }	    }()); 	    /**	     * SHA-3 hash algorithm.	     */	    var SHA3 = C_algo.SHA3 = Hasher.extend({	        /**	         * Configuration options.	         *	         * @property {number} outputLength	         *   The desired number of bits in the output hash.	         *   Only values permitted are: 224, 256, 384, 512.	         *   Default: 512	         */	        cfg: Hasher.cfg.extend({	            outputLength: 512	        }), 	        _doReset: function () {	            var state = this._state = []	            for (var i = 0; i < 25; i++) {	                state[i] = new X64Word.init();	            } 	            this.blockSize = (1600 - 2 * this.cfg.outputLength) / 32;	        }, 	        _doProcessBlock: function (M, offset) {	            // Shortcuts	            var state = this._state;	            var nBlockSizeLanes = this.blockSize / 2; 	            // Absorb	            for (var i = 0; i < nBlockSizeLanes; i++) {	                // Shortcuts	                var M2i  = M[offset + 2 * i];	                var M2i1 = M[offset + 2 * i + 1]; 	                // Swap endian	                M2i = (	                    (((M2i << 8)  | (M2i >>> 24)) & 0x00ff00ff) |	                    (((M2i << 24) | (M2i >>> 8))  & 0xff00ff00)	                );	                M2i1 = (	                    (((M2i1 << 8)  | (M2i1 >>> 24)) & 0x00ff00ff) |	                    (((M2i1 << 24) | (M2i1 >>> 8))  & 0xff00ff00)	                ); 	                // Absorb message into state	                var lane = state[i];	                lane.high ^= M2i1;	                lane.low  ^= M2i;	            } 	            // Rounds	            for (var round = 0; round < 24; round++) {	                // Theta	                for (var x = 0; x < 5; x++) {	                    // Mix column lanes	                    var tMsw = 0, tLsw = 0;	                    for (var y = 0; y < 5; y++) {	                        var lane = state[x + 5 * y];	                        tMsw ^= lane.high;	                        tLsw ^= lane.low;	                    } 	                    // Temporary values	                    var Tx = T[x];	                    Tx.high = tMsw;	                    Tx.low  = tLsw;	                }	                for (var x = 0; x < 5; x++) {	                    // Shortcuts	                    var Tx4 = T[(x + 4) % 5];	                    var Tx1 = T[(x + 1) % 5];	                    var Tx1Msw = Tx1.high;	                    var Tx1Lsw = Tx1.low; 	                    // Mix surrounding columns	                    var tMsw = Tx4.high ^ ((Tx1Msw << 1) | (Tx1Lsw >>> 31));	                    var tLsw = Tx4.low  ^ ((Tx1Lsw << 1) | (Tx1Msw >>> 31));	                    for (var y = 0; y < 5; y++) {	                        var lane = state[x + 5 * y];	                        lane.high ^= tMsw;	                        lane.low  ^= tLsw;	                    }	                } 	                // Rho Pi	                for (var laneIndex = 1; laneIndex < 25; laneIndex++) {	                    var tMsw;	                    var tLsw; 	                    // Shortcuts	                    var lane = state[laneIndex];	                    var laneMsw = lane.high;	                    var laneLsw = lane.low;	                    var rhoOffset = RHO_OFFSETS[laneIndex]; 	                    // Rotate lanes	                    if (rhoOffset < 32) {	                        tMsw = (laneMsw << rhoOffset) | (laneLsw >>> (32 - rhoOffset));	                        tLsw = (laneLsw << rhoOffset) | (laneMsw >>> (32 - rhoOffset));	                    } else /* if (rhoOffset >= 32) */ {	                        tMsw = (laneLsw << (rhoOffset - 32)) | (laneMsw >>> (64 - rhoOffset));	                        tLsw = (laneMsw << (rhoOffset - 32)) | (laneLsw >>> (64 - rhoOffset));	                    } 	                    // Transpose lanes	                    var TPiLane = T[PI_INDEXES[laneIndex]];	                    TPiLane.high = tMsw;	                    TPiLane.low  = tLsw;	                } 	                // Rho pi at x = y = 0	                var T0 = T[0];	                var state0 = state[0];	                T0.high = state0.high;	                T0.low  = state0.low; 	                // Chi	                for (var x = 0; x < 5; x++) {	                    for (var y = 0; y < 5; y++) {	                        // Shortcuts	                        var laneIndex = x + 5 * y;	                        var lane = state[laneIndex];	                        var TLane = T[laneIndex];	                        var Tx1Lane = T[((x + 1) % 5) + 5 * y];	                        var Tx2Lane = T[((x + 2) % 5) + 5 * y]; 	                        // Mix rows	                        lane.high = TLane.high ^ (~Tx1Lane.high & Tx2Lane.high);	                        lane.low  = TLane.low  ^ (~Tx1Lane.low  & Tx2Lane.low);	                    }	                } 	                // Iota	                var lane = state[0];	                var roundConstant = ROUND_CONSTANTS[round];	                lane.high ^= roundConstant.high;	                lane.low  ^= roundConstant.low;	            }	        }, 	        _doFinalize: function () {	            // Shortcuts	            var data = this._data;	            var dataWords = data.words;	            var nBitsTotal = this._nDataBytes * 8;	            var nBitsLeft = data.sigBytes * 8;	            var blockSizeBits = this.blockSize * 32; 	            // Add padding	            dataWords[nBitsLeft >>> 5] |= 0x1 << (24 - nBitsLeft % 32);	            dataWords[((Math.ceil((nBitsLeft + 1) / blockSizeBits) * blockSizeBits) >>> 5) - 1] |= 0x80;	            data.sigBytes = dataWords.length * 4; 	            // Hash final blocks	            this._process(); 	            // Shortcuts	            var state = this._state;	            var outputLengthBytes = this.cfg.outputLength / 8;	            var outputLengthLanes = outputLengthBytes / 8; 	            // Squeeze	            var hashWords = [];	            for (var i = 0; i < outputLengthLanes; i++) {	                // Shortcuts	                var lane = state[i];	                var laneMsw = lane.high;	                var laneLsw = lane.low; 	                // Swap endian	                laneMsw = (	                    (((laneMsw << 8)  | (laneMsw >>> 24)) & 0x00ff00ff) |	                    (((laneMsw << 24) | (laneMsw >>> 8))  & 0xff00ff00)	                );	                laneLsw = (	                    (((laneLsw << 8)  | (laneLsw >>> 24)) & 0x00ff00ff) |	                    (((laneLsw << 24) | (laneLsw >>> 8))  & 0xff00ff00)	                ); 	                // Squeeze state to retrieve hash	                hashWords.push(laneLsw);	                hashWords.push(laneMsw);	            } 	            // Return final computed hash	            return new WordArray.init(hashWords, outputLengthBytes);	        }, 	        clone: function () {	            var clone = Hasher.clone.call(this); 	            var state = clone._state = this._state.slice(0);	            for (var i = 0; i < 25; i++) {	                state[i] = state[i].clone();	            } 	            return clone;	        }	    }); 	    /**	     * Shortcut function to the hasher's object interface.	     *	     * @param {WordArray|string} message The message to hash.	     *	     * @return {WordArray} The hash.	     *	     * @static	     *	     * @example	     *	     *     var hash = CryptoJS.SHA3('message');	     *     var hash = CryptoJS.SHA3(wordArray);	     */	    C.SHA3 = Hasher._createHelper(SHA3); 	    /**	     * Shortcut function to the HMAC's object interface.	     *	     * @param {WordArray|string} message The message to hash.	     * @param {WordArray|string} key The secret key.	     *	     * @return {WordArray} The HMAC.	     *	     * @static	     *	     * @example	     *	     *     var hmac = CryptoJS.HmacSHA3(message, key);	     */	    C.HmacSHA3 = Hasher._createHmacHelper(SHA3);	}(Math));  	return CryptoJS.SHA3; }));