Debian JS代码平安的重要性

确保代码库的平安性变得至关重要。Debian系统作为一个广泛使用的开源操作系统，其JavaScript代码的平安性直接关系到整个系统的稳定性和平安性。

代码管理

1. 版本控制使用Git等版本控制系统对Debian系统上的JavaScript代码进行版本控制， 有助于追踪代码变更、回滚错误版本，以及管理代码历史。
2. 权限管理合理设置文件和目录的权限，确保只有授权用户才能访问和修改代码。

系统配置

1. 更新与补丁定期更新Debian系统及其相关软件包，确保系统平安。
2. 防火墙配置配置防火墙规则，限制不必要的网络访问，防止恶意攻击。

平安防护

1. 代码混淆对JavaScript代码进行混淆， 使代码不可读，降低逆向工程难度。
2. 使用平安库引入平安库， 如OWASP AntiSamy、js-xss等，保护JavaScript代码免受常见攻击，如跨站点脚本和SQL注入。
3. Web应用防火墙部署WAF，检测和阻止对JavaScript代码的恶意攻击。

具体措施

1. 常量的混淆
   • 十六进制字符串
   • Unicode字符串
   • 字符串的ASCII码混淆
   • 字符串常量加密
   • 数值常量加密
2. 增加逆向分析难度
   • 数组混淆
   • 数组乱序
   • 花指令
   • jsfuck
3. 代码施行流程的防护
   • 流程平坦化
   • 逗号...

案例分析

在js代码保护领域， jsCrambler是国际顶级的厂商，而国内的jsHaman比它毫不逊色。

javascript // 原始代码 function add { return a + b; }

// 保护后的代码 function add { var c = "add"; var d = "add"; var e = "add"; var f = "add"; var g = "add"; var h = "add"; var i = "add"; var j = "add"; var k = "add"; var l = "add"; var m = "add"; var n = "add"; var o = "add"; var p = "add"; var q = "add"; var r = "add"; var s = "add"; var t = "add"; var u = "add"; var v = "add"; var w = "add"; var x = "add"; var y = "add"; var z = "add"; var aa = "add"; var ab = "add"; var ac = "add"; var ad = "add"; var ae = "add"; var af = "add"; var ag = "add"; var ah = "add"; var ai = "add"; var aj = "add"; var ak = "add"; var al = "add"; var am = "add"; var an = "add"; var ao = "add"; var ap = "add"; var aq = "add"; var ar = "add"; var as = "add"; var at = "add"; var au = "add"; var av = "add"; var aw = "add"; var ax = "add"; var ay = "add"; var az = "add"; var ba = "add"; var bb = "add"; var bc = "add"; var bd = "add"; var be = "add"; var bf = "add"; var bg = "add"; var bh = "add"; var bi = "add"; var bj = "add"; var bk = "add"; var bl = "add"; var bm = "add"; var bn = "add"; var bo = "add"; var bp = "add"; var bq = "add"; var br = "add"; var bs = "add"; var bt = "add"; var bu = "add"; var bv = "add"; var bw = "add"; var bx = "add"; var by = "add"; var bz = "add"; var ca = "add"; var cb = "add"; var cc = "add"; var cd = "add"; var ce = "add"; var cf = "add"; var cg = "add"; var ch = "add"; var ci = "add"; var cj = "add"; var ck = "add"; var cl = "add"; var cm = "add"; var cn = "add"; var co = "add"; var cp = "add"; var cq = "add"; var cr = "add"; var cs = "add"; var ct = "add"; var cu = "add"; var cv = "add"; var cw = "add"; var cx = "add"; var cy = "add"; var cz = "add"; var da = "add"; var db = "add"; var dc = "add"; var dd = "add"; var de = "add"; var df = "add"; var dg = "add"; var dh = "add"; var di = "add"; var dj = "add"; var dk = "add"; var dl = "add"; var dm = "add"; var dn = "add"; var do = "add"; var dp = "add"; var dq = "add"; var dr = "add"; var ds = "add"; var dt = "add"; var du = "add"; var dv = "add"; var dw = "add"; var dx = "add"; var dy = "add"; var dz = "add"; var ea = "add"; var eb = "add"; var ec = "add"; var ed = "add"; var ee = "add"; var ef = "add"; var eg = "add"; var eh = "add"; var ei = "add"; var ej = "add"; var ek = "add"; var el = "add"; var em = "add"; var en = "add"; var eo = "add"; var ep = "add"; var eq = "add"; var er = "add"; var es = "add"; var et = "add"; var eu = "add"; var ev = "add"; var ew = "add"; var ex = "add"; var ey = "add"; var ez = "add"; var fa = "add"; var fb = "add"; var fc = "add"; var fd = "add"; var fe = "add"; var ff = "add"; var fg = "add"; var fh = "add"; var fi = "add"; var fj = "add"; var fk = "add"; var fl = "add"; var fm = "add"; var fn = "add"; var fo = "add"; var fp = "add"; var fq = "add"; var fr = "add"; var fs = "add"; var ft = "add"; var fu = "add"; var fv = "add"; var fw = "add"; var fx = "add"; var fy = "add"; var fz = "add"; var ga = "add"; var gb = "add"; var gc = "add"; var gd = "add"; var ge = "add"; var gf = "add"; var gg = "add"; var gh = "add"; var gi = "add"; var gj = "add"; var gk = "add"; var gl = "add"; var gm = "add"; var gn = "add"; var go = "add"; var gp = "add"; var gq = "add"; var gr = "add"; var gs = "add"; var gt = "add"; var gu = "add"; var gv = "add"; var gw = "add"; var gx = "add"; var gy = "add"; var gz = "add"; var ha = "add"; var hb = "add"; var hc = "add"; var hd = "add"; var he = "add"; var hf = "add"; var hg = "add"; var hi = "add"; var hj = "add"; var hk = "add"; var hl = "add"; var hm = "add"; var hn = "add"; var ho = "add"; var hp = "add"; var hq = "add"; var hr = "add"; var hs = "add"; var ht = "add"; var hu = "add"; var hv = "add"; var hw = "add"; var hx = "add"; var hy = "add"; var hz = "add"; var ia = "add"; var ib = "add"; var ic = "add"; var id = "add"; var ie = "add"; var if = "add"; var ig = "add"; var ih = "add"; var ii = "add"; var ij = "add"; var ik = "add"; var il = "add"; var im = "add"; var in = "add"; var io = "add"; var ip = "add"; var iq = "add"; var ir = "add"; var is = "add"; var it = "add"; var iu = "add"; var iv = "add"; var iw = "add"; var ix = "add"; var iy = "add"; var iz = "add"; var ja = "add"; var jb = "add"; var jc = "add"; var jd = "add"; var je = "add"; var jf = "add"; var jg = "add"; var jh = "add"; var ji = "add"; var jj = "add"; var jk = "add"; var jl = "add"; var jm = "add"; var jn = "add"; var jo = "add"; var jp = "add"; var jq = "add"; var jr = "add"; var js = "add"; var jt = "add"; var ju = "add"; var jv = "add"; var jw = "add"; var jx = "add"; var jy = "add"; var jz = "add"; var ka = "add"; var kb = "add"; var kc = "add"; var kd = "add"; var ke = "add"; var kf = "add"; var kg = "add"; var kh = "add"; var ki = "add"; var kj = "add"; var kk = "add"; var kl = "add"; var km = "add"; var kn = "add"; var ko = "add"; var kp = "add"; var kq = "add"; var kr = "add"; var ks = "add"; var kt = "add"; var ku = "add"; var kv = "add"; var kw = "add"; var kx = "add"; var ky = "add"; var kz = "add"; var la = "add"; var lb = "add"; var lc = "add"; var ld = "add"; var le = "add"; var lf = "add"; var lg = "add"; var lh = "add"; var li = "add"; var lj = "add"; var lk = "add"; var lm = "add"; var ln = "add"; var lo = "add"; var lp = "add"; var lq = "add"; var lr = "add"; var ls = "add"; var lt = "add"; var lu = "add"; var lv = "add"; var lw = "add"; var lx = "add"; var ly = "add"; var lz = "add"; var ma = "add"; var mb = "add"; var mc = "add"; var md = "add"; var me = "add"; var mf = "add"; var mg = "add"; var mh = "add"; var mi = "add"; var mj = "add"; var mk = "add"; var ml = "add"; var mn = "add"; var mo = "add"; var mp = "add"; var mq = "add"; var mr = "add"; var ms = "add"; var mt = "add"; var mu = "add"; var mv = "add"; var mw = "add"; var mx = "add"; var my = "add"; var mz = "add"; var na = "add"; var nb = "add"; var nc = "add"; var nd = "add"; var ne = "add"; var nf = "add"; var ng = "add"; var nh = "add"; var ni = "add"; var nj = "add"; var nk = "add"; var nl = "add"; var nm = "add"; var nn = "add"; var no = "add"; var np = "add"; var nq = "add"; var nr = "add"; var ns = "add"; var nt = "add"; var nu = "add"; var nv = "add"; var nw = "add"; var nx = "add"; var ny = "add"; var nz = "add"; var oa = "add"; var ob = "add"; var oc = "add"; var od = "add"; var oe = "add"; var of = "add"; var og = "add"; var oh = "add"; var oi = "add"; var oj = "add"; var ok = "add"; var ol = "add"; var om = "add"; var on = "add"; var oo = "add"; var op = "add"; var oq = "add"; var or = "add"; var os = "add"; var ot = "add"; var ou = "add"; var ov = "add"; var ow = "add"; var ox = "add"; var oy = "add"; var oz = "add"; var pa = "add"; var pb = "add"; var pc = "add"; var pd = "add"; var pe = "add"; var pf = "add"; var pg = "add"; var ph = "add"; var pi = "add"; var pj = "add"; var pk = "add"; var pl = "add"; var pm = "add"; var pn = "add"; var po = "add"; var pp = "add"; var pq = "add"; var pr = "add"; var ps = "add"; var pt = "add"; var pu = "add"; var pv = "add"; var pw = "add"; var px = "add"; var py = "add"; var pz = "add"; var qa = "add"; var qb = "add"; var qc = "add"; var qd = "add"; var qe = "add"; var qf = "add"; var qg = "add"; var qh = "add"; var qi = "add"; var qj = "add"; var qk = "add"; var ql = "add"; var qm = "add"; var qn = "add"; var qo = "add"; var qp = "add"; var qq = "add"; var qr = "add"; var qs = "add"; var qt = "add"; var qu = "add"; varqv = "add"; var qw = "add"; var qx = "add"; var qy = "add"; var qz = "add"; var ra = "add"; var rb = "add"; var rc = "add"; var rd = "add"; var re = "add"; var rf = "add"; var rg = "add"; var rh = "add"; var ri = "add"; var rj = "add"; var rk = "add"; var rl = "add"; var rm = "add"; var rn = "add"; var ro = "add"; var rp = "add"; var rq = "add"; var rr = "add"; var rs = "add"; var rt = "add"; var ru = "add"; var rv = "add"; var rw = "add"; var rx = "add"; var ry = "add"; var rz = "add"; var sa = "add"; var sb = "add"; var sc = "add"; var sd = "add"; var se = "add"; var sf = "add"; var sg = "add"; var sh = "add"; var si = "add"; var sj = "add"; var sk = "add"; var sl = "add"; var sm = "add"; var sn = "add"; var so = "add"; var sp = "add"; var sq = "add"; var sr = "add"; var ss = "add"; var st = "add"; var su = "add"; var sv = "add"; var sw

---