xxtea 算法的 js 加密处理类,包含 UtfParser 和 Base64 类？

JavaScript 实现

新建 xxtea.js 文件

ES5 写法：

/*
* xxtea算法的js加密处理类,还包含了UtfParser类,还包含了Base64类
*///Class:Xxtea
export function Xxtea(privateKey) {this._keyString = privateKey;
}//将长整形转换为string,private
Xxtea.prototype._long2str = function (v, w) {var vl = v.length;var n = (vl - 1) << 2;if (w) {var m = v[vl - 1];if ((m < n - 3) || (m > n)) return null;n = m;}for (var i = 0; i < vl; i++) {v[i] = String.fromCharCode(v[i] & 0xff,v[i] >>> 8 & 0xff,v[i] >>> 16 & 0xff,v[i] >>> 24 & 0xff);}if (w) {return v.join('').substring(0, n);}else {return v.join('');}
}//将string转换为long,private
Xxtea.prototype._str2long = function (s, w) {var len = s.length;var v = [];for (var i = 0; i < len; i += 4) {v[i >> 2] = s.charCodeAt(i)| s.charCodeAt(i + 1) << 8| s.charCodeAt(i + 2) << 16| s.charCodeAt(i + 3) << 24;}if (w) {v[v.length] = len;}return v;
}//function: encrypt str with private key by xxtea
Xxtea.prototype.xxtea_encrypt = function (str) {if (str == "") {return "";}str = Base64.encode64(UtfParser.utf16to8(str));var v = this._str2long(str, true);var k = this._str2long(this._keyString, false);if (k.length < 4) {k.length = 4;}var n = v.length - 1;var z = v[n], y = v[0], delta = 0x9E3779B9;var mx, e, p, q = Math.floor(6 + 52 / (n + 1)), sum = 0;while (0 < q--) {sum = sum + delta & 0xffffffff;e = sum >>> 2 & 3;for (p = 0; p < n; p++) {y = v[p + 1];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);z = v[p] = v[p] + mx & 0xffffffff;}y = v[0];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);z = v[n] = v[n] + mx & 0xffffffff;}return Base64.encode64(this._long2str(v, false));
}//function: decrypt str with private key by xxtea
Xxtea.prototype.xxtea_decrypt = function (str) {if (str == "") {return "";}str = Base64.decode64(str);var v = this._str2long(str, false);var k = this._str2long(this._keyString, false);if (k.length < 4) {k.length = 4;}var n = v.length - 1;var z = v[n - 1], y = v[0], delta = 0x9E3779B9;var mx, e, p, q = Math.floor(6 + 52 / (n + 1)), sum = q * delta & 0xffffffff;while (sum != 0) {e = sum >>> 2 & 3;for (p = n; p > 0; p--) {z = v[p - 1];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);y = v[p] = v[p] - mx & 0xffffffff;}z = v[n];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);y = v[0] = v[0] - mx & 0xffffffff;sum = sum - delta & 0xffffffff;}return UtfParser.utf8to16(Base64.decode64(this._long2str(v, true)));
}//Class:utf16 to utf8, utf8 ot utf16
function UtfParser() {//all method is static
}//function:change utf16 to utf8
//parms(str):string that you want to change
UtfParser.utf16to8 = function (str) {var out, i, len, c;out = "";len = str.length;for (i = 0; i < len; i++) {c = str.charCodeAt(i);if ((c >= 0x0001) && (c <= 0x007F)) {out += str.charAt(i);}else if (c > 0x07FF) {out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));}else {out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));}}return out;
}//function:change utf8 to utf16
//parms(str):string that you want to change
UtfParser.utf8to16 = function (str) {str = str.toString();var out, i, len, c;var char2, char3;out = "";len = str.length;i = 0;while (i < len) {c = str.charCodeAt(i++);switch (c >> 4) {case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:// 0xxxxxxxout += str.charAt(i - 1);break;case 12: case 13:// 110x xxxx   10xx xxxxchar2 = str.charCodeAt(i++);out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));break;case 14:// 1110 xxxx  10xx xxxx  10xx xxxxchar2 = str.charCodeAt(i++);char3 = str.charCodeAt(i++);out += String.fromCharCode(((c & 0x0F) << 12) |((char2 & 0x3F) << 6) |((char3 & 0x3F) << 0));break;}}return out;
}// Class:base64 encode & decode
function Base64() {//all method is static
}//static
Base64._keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
Base64.encode64 = function (input) {var output = "";var chr1, chr2, chr3 = "";var enc1, enc2, enc3, enc4 = "";var i = 0;do {chr1 = input.charCodeAt(i++);chr2 = input.charCodeAt(i++);chr3 = input.charCodeAt(i++);enc1 = chr1 >> 2;enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);enc4 = chr3 & 63;if (isNaN(chr2)) {enc3 = enc4 = 64;} else if (isNaN(chr3)) {enc4 = 64;}output = output +Base64._keyStr.charAt(enc1) +Base64._keyStr.charAt(enc2) +Base64._keyStr.charAt(enc3) +Base64._keyStr.charAt(enc4);chr1 = chr2 = chr3 = "";enc1 = enc2 = enc3 = enc4 = "";} while (i < input.length);return output;
}Base64.decode64 = function (input) {var output = "";var chr1, chr2, chr3 = "";var enc1, enc2, enc3, enc4 = "";var i = 0;// remove all characters that are not A-Z, a-z, 0-9, +, /, or =var base64test = /[^A-Za-z0-9\+\/\=\n]/g;if (base64test.exec(input)) {alert("There were invalid base64 characters in the input text.\n" +"Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +"Expect errors in decoding.");}input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");do {enc1 = Base64._keyStr.indexOf(input.charAt(i++));enc2 = Base64._keyStr.indexOf(input.charAt(i++));enc3 = Base64._keyStr.indexOf(input.charAt(i++));enc4 = Base64._keyStr.indexOf(input.charAt(i++));chr1 = (enc1 << 2) | (enc2 >> 4);chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);chr3 = ((enc3 & 3) << 6) | enc4;output = output + String.fromCharCode(chr1);if (enc3 != 64) {output = output + String.fromCharCode(chr2);}if (enc4 != 64) {output = output + String.fromCharCode(chr3);}chr1 = chr2 = chr3 = "";enc1 = enc2 = enc3 = enc4 = "";} while (i < input.length);return output;
}

ES6 写法：

'use strict';const _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
const { error: _error } = console;
/*** @class Base64Class 帮助基类*/
class Base64Class {// #region  基础属性设置 --------------------------------------------------------------------------------------------------------// constructor() {//     // private property//     // this._keyStr = _keyStr;// };// #endregion  基础属性设置--------------------------------------------------------------------------------------------------------// #region 静态方法 --------------------------------------------------------------------------------------------------------- */static init() {return new Base64Class();}// #endregion 静态方法--------------------------------------------------------------------------------------------------------- */// public method for encodingstatic encode(input) {let output = '';let chr1, chr2, chr3, enc1, enc2, enc3, enc4;let i = 0;input = Base64Class._utf8_encode(input);while (i < input.length) {chr1 = input.charCodeAt(i++);chr2 = input.charCodeAt(i++);chr3 = input.charCodeAt(i++);enc1 = chr1 >> 2;enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);enc4 = chr3 & 63;if (isNaN(chr2)) {enc3 = enc4 = 64;} else if (isNaN(chr3)) {enc4 = 64;}output += _keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4);}return output;};// public method for decodingstatic decode(input) {let output = '';let chr1, chr2, chr3;let enc1, enc2, enc3, enc4;let i = 0;input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');while (i < input.length) {enc1 = _keyStr.indexOf(input.charAt(i++));enc2 = _keyStr.indexOf(input.charAt(i++));enc3 = _keyStr.indexOf(input.charAt(i++));enc4 = _keyStr.indexOf(input.charAt(i++));chr1 = (enc1 << 2) | (enc2 >> 4);chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);chr3 = ((enc3 & 3) << 6) | enc4;output = output + String.fromCharCode(chr1);if (enc3 !== 64) {output = output + String.fromCharCode(chr2);}if (enc4 !== 64) {output = output + String.fromCharCode(chr3);}}output = this._utf8_decode(output);return output;};static encode64(input) {let output = '';let chr1; let chr2; let chr3 = '';let enc1; let enc2; let enc3; let enc4 = '';let i = 0;do {chr1 = input.charCodeAt(i++);chr2 = input.charCodeAt(i++);chr3 = input.charCodeAt(i++);enc1 = chr1 >> 2;enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);enc4 = chr3 & 63;if (isNaN(chr2)) {enc3 = enc4 = 64;} else if (isNaN(chr3)) {enc4 = 64;}output = output +_keyStr.charAt(enc1) +_keyStr.charAt(enc2) +_keyStr.charAt(enc3) +_keyStr.charAt(enc4);chr1 = chr2 = chr3 = '';enc1 = enc2 = enc3 = enc4 = '';} while (i < input.length);return output;}static decode64(input) {let output = '';let chr1; let chr2; let chr3 = '';let enc1; let enc2; let enc3; let enc4 = '';let i = 0;// remove all characters that are not A-Z, a-z, 0-9, +, /, or =const base64test = /[^A-Za-z0-9\+\/\=\n]/g;if (base64test.exec(input)) {_error('There were invalid base64 characters in the input text.\n' +"Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +'Expect errors in decoding.');}input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');do {enc1 = _keyStr.indexOf(input.charAt(i++));enc2 = _keyStr.indexOf(input.charAt(i++));enc3 = _keyStr.indexOf(input.charAt(i++));enc4 = _keyStr.indexOf(input.charAt(i++));chr1 = (enc1 << 2) | (enc2 >> 4);chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);chr3 = ((enc3 & 3) << 6) | enc4;output = output + String.fromCharCode(chr1);if (enc3 !== 64) {output = output + String.fromCharCode(chr2);}if (enc4 !== 64) {output = output + String.fromCharCode(chr3);}chr1 = chr2 = chr3 = '';enc1 = enc2 = enc3 = enc4 = '';} while (i < input.length);return output;}// private method for UTF-8 encodingstatic _utf8_encode(string) {string = string.replace(/\r\n/g, '\n');let utftext = '';for (let n = 0; n < string.length; n++) {const c = string.charCodeAt(n);if (c < 128) {utftext += String.fromCharCode(c);} else if ((c > 127) && (c < 2048)) {utftext += String.fromCharCode((c >> 6) | 192);utftext += String.fromCharCode((c & 63) | 128);} else {utftext += String.fromCharCode((c >> 12) | 224);utftext += String.fromCharCode(((c >> 6) & 63) | 128);utftext += String.fromCharCode((c & 63) | 128);}}return utftext;};// private method for UTF-8 decodingstatic _utf8_decode(utftext) {let string = '';let i = 0;let c = 0;// let c1 = 0;let c2 = 0;let c3 = 0;while (i < utftext.length) {c = utftext.charCodeAt(i);if (c < 128) {string += String.fromCharCode(c);i++;} else if ((c > 191) && (c < 224)) {c2 = utftext.charCodeAt(i + 1);string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));i += 2;} else {c2 = utftext.charCodeAt(i + 1);c3 = utftext.charCodeAt(i + 2);string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));i += 3;}}return string;};// #endregion 静态方法 --------------------------------------------------------------------------------------------------------
}/*** @class UtfParserClass类*/
class UtfParserClass {// #region  基础属性设置 --------------------------------------------------------------------------------------------------------// #endregion  基础属性设置--------------------------------------------------------------------------------------------------------// #region  静态方法 --------------------------------------------------------------------------------------------------------// #region 对象内部使用 --------------------------------------------------------------------------------------------------------// #region 对象内部使用 --- 基础实例化相关方法---------------------------------------------------------------/*** 用于对象实例化* @param {String} privateKey 用于加密的私钥* @returns {Object} 返回已经实例化完成的对象*/static init() {const res = new UtfParserClass();return res;}// #endregion 对象内部使用 --- 基础实例化相关方法---------------------------------------------------------------// #endregion 对象内部使用--------------------------------------------------------------------------------------------------------// #region 对象外部使用 --------------------------------------------------------------------------------------------------------// function:change utf16 to utf8// parms(str):string that you want to changestatic utf16to8(str) {let out, i, c;const len = str.length;out = '';for (i = 0; i < len; i++) {c = str.charCodeAt(i);if ((c >= 0x0001) && (c <= 0x007F)) {out += str.charAt(i);} else if (c > 0x07FF) {out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));} else {out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));}}return out;}// function:change utf8 to utf16// parms(str):string that you want to changestatic utf8to16(str) {str = str.toString();const len = str.length;let out, i, c;let char2, char3;out = '';i = 0;while (i < len) {c = str.charCodeAt(i++);switch (c >> 4) {case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:// 0xxxxxxxout += str.charAt(i - 1);break;case 12: case 13:// 110x xxxx  10xx xxxxchar2 = str.charCodeAt(i++);out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));break;case 14:// 1110 xxxx  10xx xxxx  10xx xxxxchar2 = str.charCodeAt(i++);char3 = str.charCodeAt(i++);out += String.fromCharCode(((c & 0x0F) << 12) |((char2 & 0x3F) << 6) |((char3 & 0x3F) << 0));break;}}return out;}static utf8Encode(str) {// eslint-disable-next-line no-control-regexif (/^[\x00-\x7f]*$/.test(str)) {return str;}var buf = [];var n = str.length;for (var i = 0, j = 0; i < n; ++i, ++j) {var codeUnit = str.charCodeAt(i);if (codeUnit < 0x80) {buf[j] = str.charAt(i);} else if (codeUnit < 0x800) {buf[j] = String.fromCharCode(0xC0 | (codeUnit >> 6),0x80 | (codeUnit & 0x3F));} else if (codeUnit < 0xD800 || codeUnit > 0xDFFF) {buf[j] = String.fromCharCode(0xE0 | (codeUnit >> 12),0x80 | ((codeUnit >> 6) & 0x3F),0x80 | (codeUnit & 0x3F));} else {if (i + 1 < n) {var nextCodeUnit = str.charCodeAt(i + 1);if (codeUnit < 0xDC00 && nextCodeUnit >= 0xDC00 && nextCodeUnit <= 0xDFFF) {var rune = (((codeUnit & 0x03FF) << 10) | (nextCodeUnit & 0x03FF)) + 0x010000;buf[j] = String.fromCharCode(0xF0 | ((rune >> 18) & 0x3F),0x80 | ((rune >> 12) & 0x3F),0x80 | ((rune >> 6) & 0x3F),0x80 | (rune & 0x3F));++i;continue;}}throw new Error('Malformed string');}}return buf.join('');}static utf8DecodeShortString(bs, n) {var charCodes = new Array(n);var i = 0; var off = 0;for (var len = bs.length; i < n && off < len; i++) {var unit = bs.charCodeAt(off++);switch (unit >> 4) {case 0:case 1:case 2:case 3:case 4:case 5:case 6:case 7:charCodes[i] = unit;break;case 12:case 13:if (off < len) {charCodes[i] = ((unit & 0x1F) << 6) |(bs.charCodeAt(off++) & 0x3F);} else {throw new Error('Unfinished UTF-8 octet sequence');}break;case 14:if (off + 1 < len) {charCodes[i] = ((unit & 0x0F) << 12) |((bs.charCodeAt(off++) & 0x3F) << 6) |(bs.charCodeAt(off++) & 0x3F);} else {throw new Error('Unfinished UTF-8 octet sequence');}break;case 15:if (off + 2 < len) {var rune = (((unit & 0x07) << 18) |((bs.charCodeAt(off++) & 0x3F) << 12) |((bs.charCodeAt(off++) & 0x3F) << 6) |(bs.charCodeAt(off++) & 0x3F)) - 0x10000;if (rune >= 0 && rune <= 0xFFFFF) {charCodes[i++] = (((rune >> 10) & 0x03FF) | 0xD800);charCodes[i] = ((rune & 0x03FF) | 0xDC00);} else {throw new Error('Character outside valid Unicode range: 0x' + rune.toString(16));}} else {throw new Error('Unfinished UTF-8 octet sequence');}break;default:throw new Error('Bad UTF-8 encoding 0x' + unit.toString(16));}}if (i < n) {charCodes.length = i;}return String.fromCharCode.apply(String, charCodes);}static utf8DecodeLongString(bs, n) {var buf = [];var charCodes = new Array(0x8000);var i = 0; var off = 0;for (var len = bs.length; i < n && off < len; i++) {var unit = bs.charCodeAt(off++);switch (unit >> 4) {case 0:case 1:case 2:case 3:case 4:case 5:case 6:case 7:charCodes[i] = unit;break;case 12:case 13:if (off < len) {charCodes[i] = ((unit & 0x1F) << 6) |(bs.charCodeAt(off++) & 0x3F);} else {throw new Error('Unfinished UTF-8 octet sequence');}break;case 14:if (off + 1 < len) {charCodes[i] = ((unit & 0x0F) << 12) |((bs.charCodeAt(off++) & 0x3F) << 6) |(bs.charCodeAt(off++) & 0x3F);} else {throw new Error('Unfinished UTF-8 octet sequence');}break;case 15:if (off + 2 < len) {var rune = (((unit & 0x07) << 18) |((bs.charCodeAt(off++) & 0x3F) << 12) |((bs.charCodeAt(off++) & 0x3F) << 6) |(bs.charCodeAt(off++) & 0x3F)) - 0x10000;if (rune >= 0 && rune <= 0xFFFFF) {charCodes[i++] = (((rune >> 10) & 0x03FF) | 0xD800);charCodes[i] = ((rune & 0x03FF) | 0xDC00);} else {throw new Error('Character outside valid Unicode range: 0x' + rune.toString(16));}} else {throw new Error('Unfinished UTF-8 octet sequence');}break;default:throw new Error('Bad UTF-8 encoding 0x' + unit.toString(16));}if (i >= 0x7FFF - 1) {var size = i + 1;charCodes.length = size;buf[buf.length] = String.fromCharCode.apply(String, charCodes);n -= size;i = -1;}}if (i > 0) {charCodes.length = i;buf[buf.length] = String.fromCharCode.apply(String, charCodes);}return buf.join('');}// n is UTF16 lengthstatic utf8Decode(bs, n) {if (n === undefined || n === null || (n < 0)) n = bs.length;if (n === 0) return '';// eslint-disable-next-line no-control-regexif (/^[\x00-\x7f]*$/.test(bs) || !(/^[\x00-\xff]*$/.test(bs))) {if (n === bs.length) return bs;return bs.substr(0, n);}return ((n < 0x7FFF)? UtfParserClass.utf8DecodeShortString(bs, n): UtfParserClass.utf8DecodeLongString(bs, n));}// #endregion 对象外部使用--------------------------------------------------------------------------------------------------------
}/*** @class XxteaClass类*/
class XxteaClass {// #region  基础属性设置 --------------------------------------------------------------------------------------------------------constructor(privateKey) {this._keyString = privateKey;};// #endregion  基础属性设置--------------------------------------------------------------------------------------------------------// #region  静态方法 --------------------------------------------------------------------------------------------------------// #region 对象内部使用 --------------------------------------------------------------------------------------------------------// #region 对象内部使用 --- 基础实例化相关方法---------------------------------------------------------------/*** 用于对象实例化* @param {String} privateKey 用于加密的私钥* @returns {Object} 返回已经实例化完成的对象*/static init(privateKey) {const res = new XxteaClass(privateKey);return res;}// #endregion 对象内部使用 --- 基础实例化相关方法---------------------------------------------------------------// #endregion 对象内部使用--------------------------------------------------------------------------------------------------------// #region 对象外部使用 --------------------------------------------------------------------------------------------------------// 将长整形转换为string,private_long2str(v, w) {const vl = v.length;let n = (vl - 1) << 2;if (w) {const m = v[vl - 1];if ((m < n - 3) || (m > n)) return null;n = m;}for (let i = 0; i < vl; i++) {v[i] = String.fromCharCode(v[i] & 0xff,v[i] >>> 8 & 0xff,v[i] >>> 16 & 0xff,v[i] >>> 24 & 0xff);}if (w) {return v.join('').substring(0, n);} else {return v.join('');}}// 将string转换为long,private_str2long(s, w) {const len = s.length;const v = [];for (let i = 0; i < len; i += 4) {v[i >> 2] = s.charCodeAt(i) |s.charCodeAt(i + 1) << 8 |s.charCodeAt(i + 2) << 16 |s.charCodeAt(i + 3) << 24;}if (w) {v[v.length] = len;}return v;}// function: encrypt str with private key by xxteaxxtea_encrypt(str) {if (!str) {return '';}// str = Base64Class.encode64(UtfParserClass.utf16to8(str));str = Base64Class.encode64(UtfParserClass.utf8Encode(str));const v = this._str2long(str, true);const k = this._str2long(this._keyString, false);if (k.length < 4) {k.length = 4;}const n = v.length - 1;let z = v[n]; let y = v[0]; const delta = 0x9E3779B9;let mx; let e; let p; let q = Math.floor(6 + 52 / (n + 1)); let sum = 0;while (q-- > 0) {sum = sum + delta & 0xffffffff;e = sum >>> 2 & 3;for (p = 0; p < n; p++) {y = v[p + 1];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);z = v[p] = v[p] + mx & 0xffffffff;}y = v[0];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);z = v[n] = v[n] + mx & 0xffffffff;}return Base64Class.encode64(this._long2str(v, false));}// function: decrypt str with private key by xxteaxxtea_decrypt(str) {if (!str) {return '';}str = Base64Class.decode64(str);const v = this._str2long(str, false);const k = this._str2long(this._keyString, false);if (k.length < 4) {k.length = 4;}const n = v.length - 1;let z = v[n - 1]; let y = v[0]; const delta = 0x9E3779B9;let mx; let e; let p; const q = Math.floor(6 + 52 / (n + 1)); let sum = q * delta & 0xffffffff;while (sum !== 0) {e = sum >>> 2 & 3;for (p = n; p > 0; p--) {z = v[p - 1];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);y = v[p] = v[p] - mx & 0xffffffff;}z = v[n];mx = (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);y = v[0] = v[0] - mx & 0xffffffff;sum = sum - delta & 0xffffffff;}// return UtfParserClass.utf8to16(Base64Class.decode64(this._long2str(v, true)));return UtfParserClass.utf8Decode(Base64Class.decode64(this._long2str(v, true)));}// #endregion 对象外部使用--------------------------------------------------------------------------------------------------------
}
export default {Xxtea: XxteaClass,Base64: Base64Class,
};

使用案例

HTML：

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>xxtea加解密</title><link rel="stylesheet" href="./style.css">
</head>
<body><div><h3>xxtea 加解密</h3><input type="text" placeholder="请输入内容..." value="" id="content" /><button id="JiaMi">加密</button><p><span>加密输出：</span></p><textarea rows="3" cols="30"></textarea><button id="JieMi">解密</button><p><span>解密输出：</span></p><textarea rows="3" cols="30"></textarea></div><script src="./xxtea.js"></script><script src="./index.js"></script>
</body>
</html>

CSS：

*{margin:0;padding:0;
}
html,body{width:100%;height:100%;font-size:18px;font-family:'楷体';
}
div{width:300px;height:400px;border:1px solid rgba(0,0,0, .5);position:fixed;top:50%;left:50%;transform: translate(-50%,-50%);
}
div>input{width:80%;height:25px;margin:10px 10%;padding-left:10px;
}
div button{width:60px;height:25px;text-align:center;line-height:25px;border:none;background-color: deepskyblue;color:white;margin:10px 10%;cursor:pointer;
}
button:hover{background-color: dodgerblue;transition: all 1s;
}
p{margin:10px 10%;border-bottom:1px solid lightblue;
}
textarea{margin:0px 10%;
}
h3{width:100%;height:40px;background-color: rgba(0,0,0,.8);color:white;display:flex;justify-content: center;align-items: center;
}

JS：

 let valArr = document.querySelectorAll('textarea')let t = new Date().getTime()let xxtea = new XxteaClass("n+" + t)document.getElementById('JiaMi').onclick = () => {  let val = document.getElementById('content').valuevalArr[0].value = xxtea.xxtea_encrypt(val)}document.getElementById('JieMi').onclick = () => {valArr[1].value = xxtea.xxtea_decrypt(valArr[0].value)}

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xxtea 算法的 js 加密处理类,包含 UtfParser 和 Base64 类？

JavaScript 实现

新建 xxtea.js 文件

使用案例

xxtea 算法的 js 加密处理类,包含 UtfParser 和 Base64 类？相关推荐

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热门文章

xxtea 算法的 js 加密处理类,包含 UtfParser 和 Base64 类 ？

JavaScript 实现

新建 xxtea.js 文件

使用案例

xxtea 算法的 js 加密处理类,包含 UtfParser 和 Base64 类 ？相关推荐

最新文章

热门文章

xxtea 算法的 js 加密处理类,包含 UtfParser 和 Base64 类？

xxtea 算法的 js 加密处理类,包含 UtfParser 和 Base64 类？相关推荐