有没有大佬可以根据加密算法（base64ToUuid）写出解密算法（uuidToBase64）的，加密算法如下： 在这里先谢谢各位大佬啦

const BASE64_KEYS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; const BASE64_VALUES = new Array(123); for (let i = 0; i < 123; ++i) { BASE64_VALUES[i] = 64; } for (let i = 0; i < 64; ++i) { BASE64_VALUES[BASE64_KEYS.charCodeAt(i)] = i; } const HexChars = '0123456789abcdef'.split(''); let _t = ['', '', '', '']; let UuidTemplate = _t.concat(_t, '-', _t, '-', _t, '-', _t, '-', _t, _t, _t); let Indices = UuidTemplate.map(function (x, i) { return x === '-' ? NaN : i; }).filter(isFinite); // fcmR3XADNLgJ1ByKhqcC5Z -> fc991dd7-0033-4b80-9d41-c8a86a702e59 //49sjfkvnVPJJ8AhKbbuZbj /** * base64 解码为 uuid * @param {String} base64 * @returns * @example * let test = base64ToUuid('fcmR3XADNLgJ1ByKhqcC5Z') * console.log(test) //fc991dd7-0033-4b80-9d41-c8a86a702e59 */ function base64ToUuid(base64) { if (base64.length !== 22) { return base64; } UuidTemplate[0] = base64[0]; UuidTemplate[1] = base64[1]; for (let i = 2, j = 2; i < 22; i += 2) { let lhs = BASE64_VALUES[base64.charCodeAt(i)]; let rhs = BASE64_VALUES[base64.charCodeAt(i + 1)]; UuidTemplate[Indices[j++]] = HexChars[lhs >> 2]; UuidTemplate[Indices[j++]] = HexChars[((lhs & 3) << 2) | rhs >> 4]; UuidTemplate[Indices[j++]] = HexChars[rhs & 0xF]; } return UuidTemplate.join(''); } let test = base64ToUuid('fcmR3XADNLgJ1ByKhqcC5Z') console.log(test) /** * uuid 解码为 base64 * @param {String} uuid * @returns * * @example * let test = uuidToBase64('fc991dd7-0033-4b80-9d41-c8a86a702e59') * console.log(test) //fcmR3XADNLgJ1ByKhqcC5Z */ function uuidToBase64(uuid) { }