wangluohuoyun-huozhuapp/hybrid/html/crypto.js

(function() {
Window.Crypto = {};
	var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";


	// Crypto utilities
	var util = Window.Crypto.util = {

		// Bit-wise rotate left
		rotl: function(n, b) {
			return (n << b) | (n >>> (32 - b));
		},

		// Bit-wise rotate right
		rotr: function(n, b) {
			return (n << (32 - b)) | (n >>> b);
		},

		// Swap big-endian to little-endian and vice versa
		endian: function(n) {

			// If number given, swap endian
			if (n.constructor == Number) {
				return util.rotl(n, 8) & 0x00FF00FF |
					util.rotl(n, 24) & 0xFF00FF00;
			}

			// Else, assume array and swap all items
			for (var i = 0; i < n.length; i++)
				n[i] = util.endian(n[i]);
			return n;

		},

		// Generate an array of any length of random bytes
		randomBytes: function(n) {
			for (var bytes = []; n > 0; n--)
				bytes.push(Math.floor(Math.random() * 256));
			return bytes;
		},

		// Convert a string to a byte array
		stringToBytes: function(str) {
			var bytes = [];
			for (var i = 0; i < str.length; i++)
				bytes.push(str.charCodeAt(i));
			return bytes;
		},

		// Convert a byte array to a string
		bytesToString: function(bytes) {
			var str = [];
			for (var i = 0; i < bytes.length; i++)
				str.push(String.fromCharCode(bytes[i]));
			return str.join("");
		},

		// Convert a string to big-endian 32-bit words
		stringToWords: function(str) {
			var words = [];
			for (var c = 0, b = 0; c < str.length; c++, b += 8)
				words[b >>> 5] |= str.charCodeAt(c) << (24 - b % 32);
			return words;
		},

		// Convert a byte array to big-endian 32-bits words
		bytesToWords: function(bytes) {
			var words = [];
			for (var i = 0, b = 0; i < bytes.length; i++, b += 8)
				words[b >>> 5] |= bytes[i] << (24 - b % 32);
			return words;
		},

		// Convert big-endian 32-bit words to a byte array
		wordsToBytes: function(words) {
			var bytes = [];
			for (var b = 0; b < words.length * 32; b += 8)
				bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
			return bytes;
		},

		// Convert a byte array to a hex string
		bytesToHex: function(bytes) {
			var hex = [];
			for (var i = 0; i < bytes.length; i++) {
				hex.push((bytes[i] >>> 4).toString(16));
				hex.push((bytes[i] & 0xF).toString(16));
			}
			return hex.join("");
		},

		// Convert a hex string to a byte array
		hexToBytes: function(hex) {
			var bytes = [];
			for (var c = 0; c < hex.length; c += 2)
				bytes.push(parseInt(hex.substr(c, 2), 16));
			return bytes;
		},

		// Convert a byte array to a base-64 string
		bytesToBase64: function(bytes) {

			// Use browser-native function if it exists
			// if (typeof btoa == "function") return btoa(util.bytesToString(bytes));

			var base64 = [],
				overflow;

			for (var i = 0; i < bytes.length; i++) {
				switch (i % 3) {
					case 0:
						base64.push(base64map.charAt(bytes[i] >>> 2));
						overflow = (bytes[i] & 0x3) << 4;
						break;
					case 1:
						base64.push(base64map.charAt(overflow | (bytes[i] >>> 4)));
						overflow = (bytes[i] & 0xF) << 2;
						break;
					case 2:
						base64.push(base64map.charAt(overflow | (bytes[i] >>> 6)));
						base64.push(base64map.charAt(bytes[i] & 0x3F));
						overflow = -1;
				}
			}

			// Encode overflow bits, if there are any
			if (overflow != undefined && overflow != -1)
				base64.push(base64map.charAt(overflow));

			// Add padding
			while (base64.length % 4 != 0) base64.push("=");

			return base64.join("");

		},

		// Convert a base-64 string to a byte array
		base64ToBytes: function(base64) {

			// Use browser-native function if it exists
			if (typeof atob == "function") return util.stringToBytes(atob(base64));

			// Remove non-base-64 characters
			base64 = base64.replace(/[^A-Z0-9+\/]/ig, "");

			var bytes = [];

			for (var i = 0; i < base64.length; i++) {
				switch (i % 4) {
					case 1:
						bytes.push((base64map.indexOf(base64.charAt(i - 1)) << 2) |
							(base64map.indexOf(base64.charAt(i)) >>> 4));
						break;
					case 2:
						bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0xF) << 4) |
							(base64map.indexOf(base64.charAt(i)) >>> 2));
						break;
					case 3:
						bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0x3) << 6) |
							(base64map.indexOf(base64.charAt(i))));
						break;
				}
			}

			return bytes;

		}

	};

	Window.Crypto.HMAC = function(hasher, message, key, options) {

		// Allow arbitrary length keys
		key = key.length > hasher._blocksize * 4 ?
			hasher(key, {
				asBytes: true
			}) :
			util.stringToBytes(key);

		// XOR keys with pad constants
		var okey = key,
			ikey = key.slice(0);
		for (var i = 0; i < hasher._blocksize * 4; i++) {
			okey[i] ^= 0x5C;
			ikey[i] ^= 0x36;
		}

		var hmacbytes = hasher(util.bytesToString(okey) +
			hasher(util.bytesToString(ikey) + message, {
				asString: true
			}), {
				asBytes: true
			});
		return options && options.asBytes ? hmacbytes :
			options && options.asString ? util.bytesToString(hmacbytes) :
			util.bytesToHex(hmacbytes);

	};
	// The core
	var SHA1 = Window.Crypto.SHA1 = function (message, options) {
		var digestbytes = util.wordsToBytes(SHA1._sha1(message));
		return options && options.asBytes ? digestbytes :
		       options && options.asString ? util.bytesToString(digestbytes) :
		       util.bytesToHex(digestbytes);
	};
	SHA1._sha1 = function(message) {

		var m = util.stringToWords(message),
			l = message.length * 8,
			w = [],
			H0 = 1732584193,
			H1 = -271733879,
			H2 = -1732584194,
			H3 = 271733878,
			H4 = -1009589776;

		// Padding
		m[l >> 5] |= 0x80 << (24 - l % 32);
		m[((l + 64 >>> 9) << 4) + 15] = l;

		for (var i = 0; i < m.length; i += 16) {

			var a = H0,
				b = H1,
				c = H2,
				d = H3,
				e = H4;

			for (var j = 0; j < 80; j++) {

				if (j < 16) w[j] = m[i + j];
				else {
					var n = w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16];
					w[j] = (n << 1) | (n >>> 31);
				}

				var t = ((H0 << 5) | (H0 >>> 27)) + H4 + (w[j] >>> 0) + (
					j < 20 ? (H1 & H2 | ~H1 & H3) + 1518500249 :
					j < 40 ? (H1 ^ H2 ^ H3) + 1859775393 :
					j < 60 ? (H1 & H2 | H1 & H3 | H2 & H3) - 1894007588 :
					(H1 ^ H2 ^ H3) - 899497514);

				H4 = H3;
				H3 = H2;
				H2 = (H1 << 30) | (H1 >>> 2);
				H1 = H0;
				H0 = t;

			}

			H0 += a;
			H1 += b;
			H2 += c;
			H3 += d;
			H4 += e;

		}

		return [H0, H1, H2, H3, H4];

	};

	// Package private blocksize
	SHA1._blocksize = 16;

	// Crypto mode namespace
	Window.Crypto.mode = {};
	console.log("Window.Crypto")
	console.log(Window.Crypto)
	return Window.Crypto;
})();