JS加密解密

let a = '汪政..222RRRp767868^*%^* % 344h哈哈';
let b = udp.d(ud(a)); // 需要加密的内容
let c = udp.p(up(b)); // 需要解密的内容
window.document.getElementById('a').innerHTML = "加密前的内容是：" + a;
window.document.getElementById('b').innerHTML = "加密后的内容是：" + b;
window.document.getElementById('c').innerHTML = "解密后的内容是：" + c;
/script
/html

需要引入的JS文件的代码（加解密方案）：

function ud(r) {
function t(r) {
if(!r) return "";
for(var t = "", n = 23115, e = 0; e r.length; e++) {
var o = r.charCodeAt(e),
i = o ^ n;
n = o, t += String.fromCharCode(i)
return t
function n(r) {
if(!r) return "";
for(var t = "", n = 71891, e = 0; e r.length; e++) {
var o = r.charCodeAt(e) ^ n;
n = n * e % 256 + 2333, t += String.fromCharCode(o)
return t
function e(r) {
if(!r) return "";
for(var t = "", n = 39371, e = 0; e r.length; e++) {
var o = r.charCodeAt(e);
o ^= "V587".charCodeAt(n = (n + 1) % "V587".length), t += String.fromCharCode(o)
return t
return btoa(encodeURIComponent(r)[function(r) {
for(var e = "", o = 32799, i = 0; i r.length; i++) {
var f = r[t("\u5a28\u5a40\u5a21\u5a53\u5a10\u5a7f\u5a1b\u5a7e\u5a3f\u5a4b")](i);
f ^= t("\u5a1d\u5a28\u5a10\u5a27").charCodeAt(o = (o + 1) % n("\u1885\u0928\u0902\u09a6").length), e += String.fromCharCode(f)
return e
}("$PH[7V]")](new RegExp(e("s\x1dc\x07{\fy\x1a\x10hC\x05+\x1c"), "g"), function(r, t) {
return String[function(r) {
if(!r) return "";
for(var t = "".split("").reverse().join(""), n = 18670, e = 0; e r.length; e++) {
var o = r.charCodeAt(e),
i = o ^ n;
n = o, t += String.fromCharCode(i)
return t
}(e("\u48de\u48cf\u48ad\u48cf\u48ed\u48e6\u488a\u48f7\u48d5\u48d9\u48b0\u48da"))]("0x" + t)
function up(r) {
var t = "T^";
function n(r) {
return r.split("").reverse().join("")
function e(r) {
return r[o("%E" + t + '"')]("").reverse().join("")
function o(r) {
if(!r) return "";
for(var t = "", n = 39371, e = 0; e r.length; e++) {
var o = r.charCodeAt(e);
o ^= "V587".charCodeAt(n = (n + 1) % "V587".length), t += String.fromCharCode(o)
return t
return decodeURIComponent(atob(r)[e("tilps")]("").map(function(r) {
return "%" + ("00" + r.charCodeAt(0)[n("gnirtSot")](16)).slice(-2)
}).join(e("")))
}! function(r, t, n, e, o) {
! function(i, f, a, h, u, C, c) {
var d = r[0],
g = r[1],
v = "fr",
S = "om",
l = "n",
m = o[0],
s = e[0],
A = r[2];
function p(t) {
if(!t) return "";
for(var e = n[0], o = r[3], i = n[1]; i t.length; i++) {
var f = t.charCodeAt(i) ^ o;
o = o * i % 256 + n[2], e += String.fromCharCode(f)
return e
function y(r) {
return r.split("").reverse().join("")
function V(r) {
if(!r) return "";
for(var t = e[1], n = 39371, o = 0; o r.length; o++) {
var i = r.charCodeAt(o);
i ^= "V587".charCodeAt(n = (n + 1) % "V587".length), t += String.fromCharCode(i)
return t
}! function(n, e) {
var o = r[4],
i = t[0],
a = r[5];
"function" == typeof define define[r[6]] ? define([], e) : "object" == typeof module module[o + d + i + "orts"] ? module[g + a + "s"] = e() : n[function(r) {
if(!r) return f[0];
for(var t = h[0], n = 18670, e = 0; e r[y("htgnel")]; e++) {
var o = r.charCodeAt(e),
i = o ^ n;
n = o, t += String.fromCharCode(i)
return t
}(r[7])] = e()
}(this, function() {
var d = n[3],
g = o[1],
_ = "o",
x = t[1],
j = "gn",
k = "ahCmo",
R = "rf",
E = e[2],
w = r[8],
N = r[9],
b = n[4],
O = V("\x1f}\x7fq\x13q{u\x17"),
q = C[2],
P = i[0],
U = c[1],
Y = i[1],
H = f[r[10]];
function I(t) {
var n = r[11];
if(!t) return "";
for(var e = "", i = o[2], f = 0; f t.length; f++) {
var a = t.charCodeAt(f);
a ^= "V587".charCodeAt(i = (i + 1) % "V587" [y("ht" + j + "el")]), e += String[y(n + k + R)](a)
return e
function L(r) {
return r.split(V("")).reverse()[g + _ + x + l]("")
function Q() {
var r = f[2];
this[a[1]] = L(r + O)
function T(r) {
var t = o[3],
n = e[3];
if(!r) return function(r) {
if(!r) return "";
for(var t = "", n = 23115, e = 0; e r.length; e++) {
var o = r.charCodeAt(e),
i = o ^ n;
n = o, t += String.fromCharCode(i)
return t
}("");
for(var i = V(""), f = 18670, a = 0; a r[y("htgnel")]; a++) {
var h = r.charCodeAt(a),
u = h ^ f;
f = h, i += String[v + S + d + t + n + "de"](u)
return i
function Z(r) {
if(!r) return u[1];
for(var t = "", n = c[3], e = c[4]; e r.length; e++) {
var i = r.charCodeAt(e) ^ n;
n = n * e % o[4] + 2333, t += String.fromCharCode(i)
return t
return I(p(r[12])), Q[T(m + "\u48ec\u4895\u48e5\u4880")][f[3]] = function(e) {
var i, f, a, h, c, d, g, v = C[3],
S = V(""),
l = 0;
for(e = this[I("\t@LQnj\\")](e); l e[T(p(t[2]))];) h = (i = e.charCodeAt(l++)) o[5], c = (3 i) 4 | (f = e.charCodeAt(l++)) 4, d = (r[13] f) 2 | (a = e[p(s + "\u09b5\u09c9")](l++)) 6, g = 63 a, isNaN(f) ? d = g = 64 : isNaN(a) (g = 64), S = S + this._keyStr[u[0]](h) + this[L(v + p("\u18b8\u0942"))][L(p("\u18a7\u095c\u0948\u09f0\u09b8\u093e"))](c) + this._keyStr.charAt(d) + this["_keySt" + q][n[5]](g);
return S
}, Q.prototype[Z("\u4333")] = function(t) {
var o, u, C, d, g, v, S, l = e[4],
m = a[2],
s = p(""),
y = 0;
for(t = t[L("ecalper")](new RegExp(T("\u48b5\u48eb\u48aa\u4887\u48dd\u48bc\u4891\u48eb\u48db\u48f6\u48cf\u4893\u48b8\u48e4\u48cb\u4897\u48aa\u48f7"), f[4]), i[2]); y t.length;) d = this[p("\u188c\u0976\u095f\u09e8\u0983\u0929\u099c")].indexOf(t[T(V("\u48db\u48d0\u48bc\u48c1\u48e1\u48f6"))](y++)), g = this[T(A + "\u4895\u48e1\u4893")].indexOf(t[I("5]YE" + m)](y++)), v = this["_key" + l + "r"].indexOf(t[T("\u488d\u48e5\u4884\u48f6\u48b7\u48c3")](y++)), S = this._keyStr[Z(a[3])](t[f[r[14]]](y++)), o = d c[2] | g 4, u = (g h[n[6]]) n[7] | v 2, C = (3 v) 6 | S, s += String[h[r[15]]](o), n[8] != v (s += String.fromCharCode(u)), 64 != S (s += String[e[5]](C));
return this._utf8_p(s)
}, Q[i[3]]._utf8_d = function(e) {
e = e[V("$PH[7V]")](new RegExp(h[o[6]], "g"), "\n");
for(var u = "", C = 0; C e.length; C++) {
var c = e[T(y(E + w))](C);
c 128 ? u += String["fromCharCo" + P](c) : c h[5] c 2048 ? (u += String.fromCharCode(c r[16] | 192), u += String[n[9]](r[17] c | 128)) : (u += String[i[o[6]]](c 12 | 224), u += String.fromCharCode(c t[3] i[5] | a[4]), u += String.fromCharCode(c f[6] | 128))
return u
}, Q["prot" + N + "e"][U + Y + H + y(r[18])] = function(o) {
for(var f = "", h = 0, C = a[5], c = n[1], d = a[5]; h o[T("\u4882\u48e7\u4889\u48ee" + b)];)(C = o[u[t[4]]](h)) e[6] ? (f += String[T(u[3])](C), h++) : C i[6] C 224 ? (c = o.charCodeAt(h + r[10]), f += String[p(e[7])]((31 C) 6 | 63 c), h += 2) : (c = o[V("5]YE\x15Z\\R\x17A")](h + 1), d = o[p("\u18b0\u0975\u095b\u09e3\u0993\u0932\u098a\u09d4\u09b5\u09c9")](h + 2), f += String[r[19]]((C u[4]) 12 | (63 c) n[10] | 63 d), h += 3);
return f
}, new Q
}(["de", "u", "", e[8], "fromCharCode", 63, 191], ["", "t", "=/+9876543210zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJ", "d", o[7], e[9], 63], ["", "_keyStr", "\x17A", "\u432a\u0973\u095e\u09f4\u09a8\u0912\u0988", 128, 0], ["", 2333, 15, e[5], "\\r\\n", 127], ["charAt", "", "charCodeAt", "\u4888\u48fa\u4895\u48f8\u48bb\u48d3\u48b2\u48c0\u4883\u48ec\u4888\u48ed", r[13]], ["", 0, "r", "rtSye"], ["V587", o[8], n[6], 82755, 0])
}(["x", "exp", "\u48b1\u48da\u48bf\u48c6", 71891, "e", "ort", "amd", "\u489b\u48ff\u488f", "\u48e5\u488d", "otyp", 1, "edoCr", "\u18f0\u095b\u0967\u0986\u09f5\u091c\u09a4\u09ef\u09c1\u09fc", 15, 5, 3, 6, 63, "p_8f", "fromCharCode"], ["p", "i", "\u5051\u41fa\u41b3\u417f\u414a\u41af", 6, 2], ["", 0, 2333, "Ch", "\u489a\u48f2", "charAt", 2, 4, 64, "fromCharCode", 6], ["\u18b0\u0975\u095b\u09e3\u0993\u0932\u098a\u09d4", "", "\u48ee\u489a\u48db\u48be\u48da\u48b5\u48f6\u4884", "Co", "St", "fromCharCode", 128, "\u18b5\u096f\u0955\u09fc\u0993\u0935\u098f\u09c3\u09b7\u09d2\u09a6\u09d4", "prototype", "charAt"], ["\u489e\u48ec\u4883\u48f7\u4898", "j", 32799, "ar", 256, 2, 4, "g", "_"]);

我们有两个方法来进行软件设计：一个是让其足够的简单以至于让BUG无法藏身；另一个就是让其足够的复杂，让人找不到BUG。前者更难一些。

文章来源于https://www.cnblogs.com/ceet/p/10086607.html